Should an event buy carbon offsets?

Your production budget is almost settled. Then a sponsor asks whether the event will be carbon neutral. A supplier offers a certificate, the price looks manageable, and suddenly buying carbon offsets feels like the last job before you can announce the event's environmental credentials.

I'd slow that decision down. An event can choose to finance credible climate projects, but buying credits doesn't make its own emissions disappear. Put feasible reductions into the production plan first. Consider a separate credit purchase when you can afford the evidence checks, explain what you're buying and keep the purchase distinct from the event's emissions report.

Sometimes the sensible answer is yes, with a narrow purpose and a properly documented transaction. Sometimes it's to fund a smaller purchase while improving the event itself. And sometimes it's to wait, because the supplier cannot show what will be delivered or your team needs the money to fix something you already know is wasteful.

The question isn't resolved by finding the lowest price per tonne. You need to understand the project, the credits, who will use them, and the promise you're making to ticket buyers or sponsors. A cheap purchase can become expensive if you then have to defend an unsupported headline.

This guide works through that decision for a paid-event business. It covers spending priorities, the information to request before buying, a fictional budget, purchase terms and the records to keep afterwards. The examples are invented to explain the choices. They aren't carbon prices, supplier recommendations or evidence of what a typical event emits.

Decide what you want the purchase to achieve

Before asking for a quote, finish this sentence: "We want to spend this money because..." Be specific enough that someone else can judge the result. Supporting a verified project outside your event is a different objective from reducing fuel use at the venue, satisfying a particular sponsor requirement or qualifying for a named claims framework.

If your answer is "so we can put carbon neutral on the ticket page", take the proposed words to a qualified reviewer before buying anything. The purchase may not support that claim, and some markets prohibit offset-based climate claims about products and services. Discovering that after paying leaves you with a transaction chosen for a purpose it cannot fulfil.

You can instead choose to provide additional climate finance and describe the verified action accurately. That still needs evidence. It simply avoids making the success of your spending depend on proving that an outside project cancelled the impact of attending your event.

Write down who the decision is for. Your own directors may want a defensible spending policy. A sponsor may need a purchase record for its reporting. An attendee may want to know what an optional contribution funds. These people can need different information without being entitled to different versions of the truth.

For a recurring business, use your event sustainability policy to state the order of decisions. Give operational reductions their own owner and budget. Then explain when external climate finance can be considered and who can approve it. That stops a last-minute marketing request becoming the policy by accident.

Set a decision date that leaves time for questions. If the supplier says you must buy today to receive a logo before ticket launch, you don't yet have a good reason to buy. You have a deadline attached to a sales offer. Your event can launch with accurate information about its confirmed arrangements while this separate assessment continues.

Keep event emissions and purchased credits separate

An event emissions estimate describes activities within a stated boundary. That might include venue energy, production transport, catering and attendee travel, depending on the method and purpose. A credit purchase concerns a reduction or removal attributed to a project elsewhere. Those records answer different questions, even when both use tonnes of carbon dioxide equivalent.

Carbon dioxide equivalent, usually written CO2e, expresses different greenhouse gases in a common warming measure. Be clear about the units in every document. Your supplier's credit quantity, your analyst's event estimate and a sponsor's report should not switch between kilograms and tonnes without explanation.

GHG Protocol's guidance on offsets and corporate emissions reporting says companies report their emissions independently of offset transactions and report offset purchases or sales separately. It also directs users to the requirements of any third-party reporting programme. For an event, ask your analyst which method applies and retain that separation in your own working records.

Suppose a fictional event's completed assessment estimates 80 tonnes of CO2e within its documented boundary. The operator later retires 50 credits, each representing one tonne under the selected programme. The event estimate remains 80 tonnes. Record the credit retirement separately, with its project information and purpose. Don't silently replace the event total with 30 and label it "our emissions".

That distinction also helps when the estimate changes. If a supplier corrects its fuel return, update the emissions calculation. If a broker corrects a retirement record, update the credit record. Neither correction should require somebody to reconstruct a single net figure that hid the two activities.

You don't need a credit purchase to begin measuring. Our guide to measuring an event's environmental impact covers the wider operational task. Keep measurement useful for production decisions rather than treating it only as the number you need to send a credit seller.

Fund changes to the event before using credits to explain them away

Look at the decisions still within reach. Could you reduce unnecessary freight, change an equipment specification or make the advertised rail journey practical? Ask the relevant supplier what the alternative costs and what evidence would show its effect. Don't assume an idea delivers a carbon saving simply because it sounds environmentally preferable.

Some changes can affect future editions as well as this one. A reusable production item may need storage and transport; a different venue may alter attendee journeys. Compare the complete arrangement. You want the person responsible for production to explain how the change works, including any new cost or operational difficulty it creates.

The University of Oxford's revised offsetting principles place emissions cuts first and call for a transition towards removals with durable storage for residual emissions in net zero strategies. They are guidance for such strategies, rather than a certification of an individual event or a replacement for legal obligations.

For your spending decision, the practical question is whether buying credits would displace a credible improvement you've already identified. If the only money available could either fund a useful production change or buy an easier marketing message, I would fund the change. You can explain what you did once the evidence supports it.

That doesn't mean every possible event improvement must be completed before any external project receives support. Write down the feasible actions, the ones you're investigating and the constraints on the rest. Then make the funding decision openly. A plan that admits a venue limitation is more useful than declaring every remaining emission unavoidable.

Travel deserves particular attention where it matters to your assessment. Use the guide to sustainable event travel to examine the actual attendee journey. A station shuttle needs usable pickup information and a return that matches the programme. Buying credits won't fix an event finishing after the last train.

Understand what the seller is offering

Ask whether the offer is for issued credits, a promise to deliver credits later, a donation, or support for an activity that might eventually generate credits. These can all involve paying a climate-related organisation. They do not give you the same thing, and your purchase order should say which one you are approving.

An issued credit has already been created under a programme's process. A forward purchase involves future delivery and needs terms for delay or failure. A donation may support worthwhile work without transferring any quantified credit. If the sales page moves between these descriptions, ask the seller to resolve the difference in writing.

Also establish what the underlying activity does. Does it reduce emissions from an existing source, avoid emissions against an estimated alternative, or remove carbon from the atmosphere? Ask how that result is calculated and when it occurs. Don't treat a description of a possible future benefit as proof of a completed outcome.

For example, paying for tree planting describes an activity. It doesn't by itself establish a quantity of verified carbon removal, the period of storage or the treatment of future losses. You can support planting while describing it as planting. Stronger carbon statements need the appropriate evidence and a clear basis for using it.

Ask for the period when the credited reductions or removals occurred. Sellers may call this the vintage. It is different from the date you pay and may differ from the date credits were issued. Record those dates separately so the report doesn't imply that your event financed a new activity when you bought an existing unit.

Avoid choosing solely by project story. A project can have an appealing location and still leave essential questions unanswered. Equally, an unfamiliar project type shouldn't be rejected merely because it doesn't produce a compelling photograph. Choose the evidence standard first, then assess whether the offer meets it.

Ask for evidence about the exact credits

Send the same short information request to each shortlisted seller. Ask for the programme, project name and identifier, project location, methodology and version, credited period, issuance status, quantity and proposed retirement arrangements. The methodology is the set of rules used to calculate and assess the project's claimed result. Have the seller point you to the relevant public records.

You can send these questions with the request for a full quote:

• Which project and issued units will this order buy, and where can our reviewer check them?

• Which calculation rules and verification documents apply to these units?

• When did the credited activity occur, and when were the units issued?

• What, if anything, can change between accepting the quote and delivery?

• Who retires the units, whose name appears and what evidence do we receive?

• What is the total price, including every service charge, and what happens if delivery fails?

The Integrity Council for the Voluntary Carbon Market's Core Carbon Principles cover matters including additionality, permanence, conservative quantification, avoiding double counting and safeguards. Its CCP label applies through approved programmes and approved credit categories. Approval of a programme alone doesn't establish that every unit it issues qualifies for the label.

Use that as a reason to ask a precise question: "What evidence applies to the units in this quote?" A seller showing a programme logo should explain the status of the specific credits offered. If a label is part of your selection requirement, have a competent reviewer confirm its applicability before you approve the order.

Additionality asks whether the credited outcome depended on the incentive from carbon-credit revenue. Permanence concerns whether the benefit lasts and how reversals are addressed. Double counting asks whether the same result or unit is being used more than once. You don't need to become a project auditor, but you do need someone capable of assessing the answers.

Limit your first request to documents that resolve the decision. A pile of reports can create the appearance of diligence while nobody checks the quoted quantity or project identifier. Ask your reviewer to explain unresolved issues in ordinary language, their consequence for this purchase and the information needed to resolve them.

Keep a distinction between the seller and the reviewer. Establish who pays each party, whether the reviewer receives a sales commission and what their assessment covers. A seller's helpful explanation is useful information, but you shouldn't describe it as an independent review of the seller's own offer.

Check the project beyond the certificate

Ask your reviewer to identify the assumptions doing the most work in the project calculation. For an avoided-emissions project, that includes the comparison with what would otherwise have happened. For a removal project, it includes measurement and storage. You need a reasoned assessment of the relevant assumptions, rather than a general assurance that the project is registered.

Request the current project and verification documents, along with any material changes or unresolved findings relevant to the offered units. Have the reviewer explain whether the records cover the quoted period and activity. A document about a different project phase cannot quietly become evidence for the batch you're buying.

Find out what happens if the credited benefit is later reversed or the units become disputed. Ask which programme mechanisms address that risk and what the seller actually promises you. The existence of a risk mechanism doesn't mean every loss is impossible or every buyer receives an automatic refund. Read the applicable terms.

Community and biodiversity claims deserve their own checks. A carbon assessment should not be stretched into a claim about jobs, land rights or habitat unless the evidence covers those outcomes. Ask what complaints process exists, who can use it and whether there are material concerns your reviewer should investigate.

For a modest event purchase, you may not be able to commission an entirely new project investigation. Set a proportionate review budget and a clear limit on the claims you will make. If the evidence needed for your intended claim is beyond what you can reasonably assess, narrow the claim or choose another use for the money.

Keep a written conclusion for each option. "Not selected because the seller couldn't identify the units before payment" is a useful decision record. "Looked less green" is not. You want next year's team to understand the reason without having to repeat every supplier conversation.

Compare the full cost with the budget you actually have

The quote should separate credit cost, brokerage or service charges, retirement charges and any review or reporting work. Check tax treatment with your adviser and compare offers on the same basis. A price per credit can look attractive while excluding work your team still has to pay for.

Here's a fictional USD example, before tax. A conference has $6,000 available for additional environmental work. It allocates $2,500 to reorganising production deliveries so suppliers can combine loads, plus $1,000 to event measurement and review. The production team has confirmed the delivery plan is workable; its emissions effect still needs assessment. Those commitments leave $2,500 available for any credit purchase and related administration.

Assume the chosen offer is 80 issued credits at $20 each, or $1,600. The seller charges $200 for the agreed service and retirement. An additional $400 covers independent purchase review. The total is $2,200, leaving $300 uncommitted. These are invented prices and quantities, not current market rates or a recommended spend per attendee.

The approval should cover the $2,200 total, rather than just the $1,600 credit line. It should also state which reviewer does the $400 assessment and why that work isn't included in the earlier $1,000. Here, the earlier work assesses the event; the extra review assesses the external purchase. Define the jobs so you don't pay twice for the same service.

Now suppose a credible alternative costs $35 per credit on the same quantity. Credit cost becomes $2,800. With the same $200 service and $400 review, the purchase totals $3,400. That's $900 more than the $2,500 available. You need additional funding, a smaller quantity if the purpose permits, or a decision to defer.

Don't remove the operational improvement merely to preserve an attractive credit quantity. Revisit why you chose the quantity and whether a smaller, accurately described contribution meets your purpose. A purchase can be worthwhile without matching an event emissions estimate. It shouldn't create a cash shortfall you hide in the production budget.

Buy for a stated purpose, then verify retirement

Retirement is the step that records credits as used so they cannot keep circulating for another use. Confirm who will carry it out, for whom, by when and with what public evidence. Your payment receipt and the retirement record belong together, but they prove different parts of the transaction.

Verra's explanation of Verified Carbon Units describes each unit as representing one tonne of CO2e reduced or removed under its programme and says issuance and retirement records are public in its registry. That's a description of that programme's units and records, rather than a recommendation to buy any particular project.

For your order, agree the exact units or the permitted selection criteria, the named beneficiary and the reason recorded for retirement. Check how an event name, legal entity and event year will appear. A broker retiring a large pool for many customers should show how your allocation is identifiable without asking you to trust a marketing certificate alone.

After delivery, match the project, period, quantity and retirement details to the approved order. Save the record and its public reference. If you cannot locate the promised evidence, ask for clarification before publishing a completed-purchase statement. A seller saying "we're processing it" is a progress update, not the final record.

If the purchase will happen after the event, use future tense before then. Tell sponsors what is committed and when confirmation is expected. You can report that a budget has been approved without claiming credits have already been retired. Keep someone responsible for closing that task after the temporary production team has moved on.

Be clear about who controls the credits too. Are they being transferred to an account your business controls, or will a supplier retire them directly on your behalf? Those arrangements need different checks. Choose the route your business can administer reliably, and get advice on any account or contractual responsibilities before accepting them.

Put delivery failures and substitutions in the agreement

A supplier's proposal should say what happens if the quoted units become unavailable before completion. Can the seller substitute another project, period or credit type? Do you approve the replacement first? A broad right to deliver "equivalent environmental benefits" may leave you paying for an offer you never assessed.

Specify the documents and retirement evidence due, the delivery deadline, payment stages and the process for incomplete delivery. Ask your legal adviser to make the terms fit the transaction. Don't infer refund rights from a seller's statement that it has a quality policy; establish what the contract actually gives you.

Future delivery needs particular care. If credits have not yet been issued, agree what must occur before they can be delivered and what happens if the timetable slips. A future project could be a deliberate funding choice. It shouldn't be presented internally as though you have already received and retired issued units.

Keep promotional permissions separate from purchase terms. A supplier may include a badge, approved text or permission to use a project photograph. Check what each permission covers and whether the proposed words are appropriate in your markets. A licence to display a logo doesn't substantiate a claim about your event's total climate impact.

Also ask who tells you about a later material problem. You need a contact and an agreed notification route if a record is corrected, a project is suspended or the seller learns something affecting your purchase. Establish how your business will review that information and decide whether public wording needs to change.

Finally, make sure someone can find the agreement after the event. File it with the order and retirement record under the event's legal entity. A certificate left in a contractor's personal email won't help the finance team or the next producer answer a question about what the business bought.

Agree with sponsors who paid, who benefits and who may say what

A sponsor offering to pay can make a purchase affordable. It can also create confusion about whose emissions are being discussed and who is entitled to describe the credits. Resolve that before the sponsorship announcement, especially if both parties want to use the same retirement in their own reporting.

Ask the sponsor what its actual requirement is. Does it need proof that the event made an external contribution? Does it want credits retired for the sponsor? Is it asking you to make a claim about the event service? Send the exact request to the reviewer. These are different arrangements, not interchangeable ways to thank a funder.

One workable structure may be that the sponsor funds the event business's clearly described purchase, with both parties accurately stating their roles. Another may involve the sponsor making its own purchase independently. The appropriate wording and accounting depend on the arrangement. Have the adviser check ownership, beneficiary and reporting expectations rather than inventing shared rights to the same units.

Include the approved description in the sponsor agreement and the host's briefing. Don't let a careful written statement become "our partner made every ticket carbon neutral" when someone thanks them on stage. The person approving sponsor benefits should know that a credit payment doesn't entitle the sponsor to a broader environmental promise.

If the sponsor requires wording you cannot support, propose a specific description of the verified contribution instead. If that fails, decline that condition. A sponsorship payment can help the budget, but accepting an obligation you cannot deliver turns the income into a new commercial problem.

Keep the financial position clear as well. A promised contribution isn't available cash until the agreed payment occurs. If you must pay the credit seller first, include that timing in the event's cash plan. Approval of the sponsorship package and approval of the external purchase should identify who covers a late payment.

Treat an attendee contribution as a separate promise

An optional payment from ticket buyers needs a plain explanation before they choose it. Say who receives the money, whether any amount pays for administration, what will be purchased and when you will report completion. Don't imply that the contribution measures or cancels that individual's journey unless you have a defensible basis for saying so.

Consider a separate fictional event collecting an optional $2 from 300 buyers, in USD. It collects $600. If the agreed administration cost is $60, only $540 remains for the stated purchase. All these figures are invented. If your wording promised every dollar would buy credits, deducting that cost would contradict your own promise, even if the underlying purchase was credible.

Decide before launch whether the event will cover administration from its own budget or disclose the deduction. Agree what happens to contributions if the event is cancelled, the selected purchase cannot be completed or the amount collected differs from expectations. Get the refund and payment treatment checked for the markets and transaction involved.

A smaller-than-expected collection doesn't justify silently switching to a different activity. Your original promise should say what flexibility exists. Where a significant change becomes necessary, ask the appropriate adviser how to communicate it and handle the money. Keep the contribution records distinct from ticket income so finance can reconcile what was promised and spent.

Check whether your actual checkout supports the proposed collection and disclosure. Don't ask a designer to add a payment choice before the commercial and technical arrangement is confirmed. The fact that a platform sells tickets doesn't establish that it administers environmental contributions, purchases credits or checks their quality.

You may decide that funding the purchase from the business is simpler. That can avoid giving every buyer another choice to interpret, while leaving you responsible for describing the spending honestly. Judge the extra administration against the amount you're likely to raise and the promise you can reliably fulfil.

Check the claim before putting it in front of buyers

Assess the exact message, the evidence and the markets where it will appear. A report sentence, a ticket badge and an ad headline can create different impressions. Get specialist review when climate claims matter to the sale. The following sources illustrate why the purchase itself cannot act as universal permission to use neutrality language.

In the US, the Federal Trade Commission's Green Guides summary on carbon offsets calls for reliable scientific evidence and appropriate accounting. It also addresses disclosure where reductions will not occur for at least two years and warns against advertising offsets based on legally required activity. The guides explain the FTC's approach; they aren't an event certification.

In Australia, the ACCC's guidance on credits in emissions claims asks businesses to distinguish operational changes from credits and have reasonable grounds for claims that activities counterbalance each other. It also warns that credits representing historically avoided hypothetical emissions may not support a claim of neutralising a product's emissions. Check your actual wording and evidence under the applicable rules.

For EU consumer marketing, Directive (EU) 2024/825 required national measures to apply from 27 September 2026. It prohibits offset-based claims that a product has a neutral, reduced or positive greenhouse-gas impact. The text covers goods and services and distinguishes those claims from non-misleading information about environmental investments. Check the national implementation relevant to your event; buying better credits doesn't remove this restriction.

For any other market, obtain the relevant review rather than assuming one country's approach transfers. Avoid copying a claim from a supplier's global website. The supplier may be describing its project, while you are selling an event service to consumers. Your publication needs to be assessed in that context.

Our guide to communicating event sustainability without greenwashing covers the wider copy review. For this purchase, keep the proposed sentence beside the actual records. If the reviewer has to add qualifications that contradict the headline, change the headline before commissioning the creative.

Publish a record people can understand

Your report should explain the event activities assessed, the method, the exclusions and any important uncertainty. Then describe operational changes and their supported results. Put the external credit purchase in a separate part, with its quantity, project, credited period, retirement evidence and funding arrangement. A reader should be able to tell which activity happened where.

If attendee travel is incomplete, say so. The guide to surveying attendee travel explains why voluntary responses cannot automatically describe every attendee's journey. Purchasing more credits doesn't repair missing survey data or establish a complete event footprint. Keep the uncertainty visible even when the purchase budget is generous.

A short purchase statement could say that your business retired a stated quantity of identified credits for a named purpose, with a link to the record. Use those words only after verification and appropriate review. Don't add "therefore your attendance had no impact" as a casual explanation of what the transaction means.

You can use Loopyah's attendee email tools to build a message linking readers to the approved update and send yourself a test before sending it. The environmental evidence and approved wording still come from your team and advisers. Check that the email preserves the report's limits rather than shortening the claim into something broader.

Keep essential information in the message itself. A link can hold project documents and calculation details, but it shouldn't be the only place a reader discovers that you measured venue operations while excluding travel. Someone reading the email on its own needs enough information to understand the result being described.

Give people a contact for questions and name the date of the report. If you later correct it, explain what changed and update the places that used the earlier statement. This is easier when the report, sponsor copy and attendee message all refer to the same approved record.

What if the event estimate changes after you've bought?

Build a correction process into the plan before you have a final number. Your event estimate may change when the venue supplies actual energy data, a transport contractor corrects a return or your analyst discovers a missing activity. Keep the earlier version and the reason for the correction. Don't hold the result at the purchased quantity to keep a report looking consistent.

Imagine a separate fictional event initially estimates 60 tonnes of CO2e and retires 60 issued credits for its stated external contribution. A later correction raises the event estimate to 72 tonnes under the same boundary. The estimate increased by 12 tonnes. The retirement record still shows 60 credits. Those two records now need an explanation, rather than a quiet edit to make them agree.

Whether you should buy anything further depends on the commitment you made. If you promised a particular quantity, verify that you delivered it. If you promised a purchase determined by the final assessment, review that obligation and the additional cost. Neither case makes a broad climate claim acceptable by itself. Recheck the wording with the person who reviewed it originally.

You might also discover that the original estimate was too high. Keep the corrected result and the actual retirement record. Don't describe unused hypothetical emissions as an extra reduction your event achieved. Your business made a larger external contribution relative to the revised estimate; that is different from changing what happened at the venue.

For an event series, allocate purchases deliberately. Record whether a retirement belongs to one edition, several named editions or a business-wide contribution. The same credits shouldn't appear in several event reports as separate complete purchases. If the sponsor report and annual business report both mention the transaction, explain their relationship so a reader can recognise the same activity.

Schedule a final check after the expected supplier returns arrive, and give it an owner who remains available. Include the time needed to correct a report or answer a question in the administration budget. A purchase isn't fully managed just because the show has closed and the certificate arrived.

When waiting is the better purchase decision

Defer when a material question remains unanswered. That might be the identity of the credits, permission for a proposed substitute, an unresolved project concern or a sponsor's intended use of the retirement. Write the missing answer as a condition someone can close. "More confidence needed" won't tell the seller what to provide or the team when to reconsider.

For example, your reply could say that the business is ready to consider the quoted quantity after receiving the project identifier, unit details, full price and retirement timetable. State that approval depends on review of those records. This keeps the conversation moving without placing an order on the strength of a general environmental promise.

If a seller refuses to identify the project until after payment, consider another offer. Your team cannot assess a project-specific purchase while the project remains undisclosed. A confidentiality explanation may be legitimate in some transactions, but it still needs an arrangement that lets your appointed reviewer do the required work before your commitment becomes binding.

Waiting also makes sense when the purchase would consume cash needed for contracted event delivery. Check when supplier invoices fall due and whether sponsor funding has actually arrived. A budget surplus on paper doesn't establish that the bank balance can support another payment this week. Change the timing or quantity only after checking the purchase terms and your original promise.

You can retain an approved budget for external climate finance while postponing selection. Report that accurately if you mention it at all. An allocation is a plan, a signed order is a commitment, and a verified retirement is a completed step. Your public description should follow the stage you have reached.

A purchase decision your team can reuse

Create one short approval record rather than leaving the decision across separate supplier emails. Start with the event, legal entity, purpose, budget and person approving the purchase. Include the event estimate's scope where relevant, but don't make a matching quantity the default definition of success.

Under spending priorities, record the operational work already funded, further changes being assessed and why this external purchase is being considered now. Under the offer, record the exact programme, project, units, period, total cost and delivery route. Attach the review conclusion and list any unresolved condition that prevents approval.

Then record who funds the purchase, whose name will appear in retirement, what public wording is proposed and which markets were reviewed. Include the person responsible for checking delivery, the due date and the action if evidence doesn't arrive. You should be able to hand this record to finance without another meeting to explain what payment authorises.

Use these fields in the document your team already shares:

• Event and purchaser: the named edition, dates and legal entity paying.

• Purpose and limits: what the spending is meant to achieve and what it will not establish.

• Prior spending: confirmed operational improvements and event-assessment work.

• Selected offer: project, programme, unit details, credited period and complete price.

• Review: who checked the offer, their conclusion and outstanding conditions.

• Delivery: retirement beneficiary, evidence due, deadline and checking owner.

• Communications: exact approved words, intended markets and sponsor permissions.

• Completion: payment reference, verified retirement record and any correction.

For the fictional budget above, the decision could approve up to $2,200 after satisfactory review of the specified 80 issued credits, including service and independent review. It preserves the $2,500 operational commitment and $1,000 event-assessment allocation. It doesn't authorise a more expensive substitute or a neutrality claim. A revised offer returns for approval.

After completion, attach the payment and retirement evidence and mark each condition resolved. If the purchase is deferred, record why and retain the unspent budget decision. Deferral is a useful outcome when it prevents the business buying something it cannot explain. It shouldn't be disguised as a completed environmental initiative in the event report.

Before your next supplier commitment, choose one person to own this record and ask them to obtain the missing evidence. If the offer clears the review and the spending fits your priorities, approve the defined purchase. If it doesn't, keep the money available for a better-supported project or a practical improvement to the next event.