Guides
Conference budget actuals: accruals and variance review
How to run the actuals stage of a conference budget: post invoices to estimate lines, accrue each month, read the variance and close the file on a dated review.
What to take away
- Post every invoice against the line it was estimated under.
- An accrual records cost in the period it belongs to, then reverses when the invoice posts.
- A charge with no matching line is either a scope change or an estimate miss, and the two need different handling.
- A line that lands inside its estimate can still hide a service charge or a labor hour nobody quoted.
- Deposits leave early and income lands late, so model the monthly cash balance.
- The file closes once invoices, accruals and the variance report reconcile on a dated review.
Posting invoices against the lines you estimated
Once the event runs, the budget becomes a recording instrument. Post every invoice against the line it was estimated under, so a charge with no matching line stands out. That charge is either a scope change or an estimate miss, and the two need different handling.
Build the estimate in order
- Contracted itemsroom, F&B, AV, internet
- Per-attendee itemsmeals, badges, shuttle
- Speaker costshonoraria, flights, hotel
- Tax for host state plus contingency
- Review dates for fastest-moving lines
Review actuals in the order the estimate was built: contracted items first, then per-attendee items, speaker costs, tax and contingency, and the review dates. A conference budget template for Google Sheets gives the draft the line structure finance reviewers recognize.
Ask catering for the service charge, the labor minimum and the AV exclusivity clause in writing before the estimate is locked. Those are the items that surface later as unexplained charges.
How an accrual is recorded and reversed
Invoices arrive across several weeks, so accruals keep each month honest instead of shifting cost into the next period. Accrual accounting follows the matching principle: a cost belongs to the period in which the service was received, not the period in which the invoice arrives or is paid.
- At month end, list the services received whose invoice has not arrived: venue days used, catering served, AV hours worked.
- Record each as a cost against the line it was estimated under, with the matching credit to accrued expenses, a liability account.
- Note the basis for the amount, such as the contract line or the quote.
- When the invoice arrives, reverse the accrual and post the invoice against the same line in its place.
- Treat any difference between the accrual and the invoice as the variance to explain.
The last invoices land weeks after the venue clears, and the file stays open until they post. Deposits work the other way: cash leaves before the cost is incurred, so a deposit sits against its line as a prepayment until the invoice is posted.
Cash-flow gap at approval
- Hotel deposit due at signature
- Payment schedule before doors open
- Registration income lands late
- Sponsors pay on 60 or 90 day terms
- Organizer funds gap from working capital
The cash gap behind the accruals
Sponsors often pay on 60 or 90 day terms after the event. The organizer funds that gap from working capital, so model the monthly cash balance rather than the total. The bookkeeping and cash flow basics cover the monthly routine.
Reading the variance
The variance column matters more than the total. Variance is the actual share less the estimate, read line by line. Take a two-day conference for 500 attendees in a mid-size US city, six weeks out, with half the invoices still open. The shares below are illustrative.
| Line | Estimate | Actual | Against the band | Cause |
|---|---|---|---|---|
| Catering and beverage | 30 to 34 percent | 37 percent | Three points over | Service charge added late |
| AV and staging | 12 to 15 percent | 14 percent | Inside | Rigging hours above plan |
| Speaker fees and travel | 8 to 12 percent | 13 percent | One point over | Two flight changes |
The AV row is the one to notice. A line that lands inside its estimate can still hide a labor hour that nobody quoted. The pattern is common where venues bill labor as a percentage of the food subtotal.
Catering leads most conference spend, and the food and beverage percentage page gives a band to hold the actual invoice against. The conference AV cost estimator separates rigging, labor and equipment, so competing quotes can be read side by side.
Two outside references for disputed actuals
When a client questions speaker travel, the GSA sets the per diem rates that federal agencies use to reimburse lodging and meals, which makes them a published reference point.
For meals, Publication 463 says that you can generally deduct only 50% of the unreimbursed cost of your meals. How that limit treats a catering overage at year end is a question for your accountant.
After the event: the action list
Two weeks after the event the catering invoice arrives with the service charge applied to the food subtotal. Work down a short list, and keep a running note of who approved each movement, when, and why.
- Re-quote the catering line with the service charge shown separately.
- Ask the venue for the rigging hours actually worked.
- Check flight change fees against the speaker contract.
- Hold the contingency until the final invoice clears.
- Confirm the final labor hours with the venue in writing.
None of those numbers is settled until the last invoice posts.
Reconciling the file at close
Closing is a short reconciliation, done in this order once the final invoices post.
- Confirm every accrual has been reversed and replaced by its invoice.
- Confirm every invoice sits against a named line.
- Read the variance for each line and write down its cause.
- File the result with a review date.
The corporate event budget variance report ends the cycle because it pairs each overrun with the decision that produced it.
Common questions
Who owns the conference budget?
The organizer owns version control, but each line needs a named owner. Finance signs off on contingency and tax treatment.
What do I do with a charge that matches no line?
Decide whether it is a scope change or an estimate miss. A scope change needs an approval; an estimate miss needs a note on how the line was built.
Should the budget carry a contingency after the venue is contracted?
Yes. Venue costs are only part of the exposure, since AV, catering minimums, and speaker travel still move.
