Vendor rebate audit checklist for distributors

Nov 7, 2026 · 3 min read

Short answer

Pick the vendors that pay you the most rebate. Collect their agreements and 12 months of purchases and credits. Recalculate each program, compare owed vs. accrued vs. collected, then file claims for the gaps with the math attached. Three vendors is enough to start.

1. Pick the vendors

Rank vendors by rebate dollars earned last year, not by purchases.
Start with the top three. Add more once the process works.

2. Gather the documents

Signed rebate agreements, including amendments and mid-year program letters.
Buying group program terms for the same vendors, if you're a member.
12 months of purchases by vendor, by month. Include returns and note which product lines each purchase falls in.
Every credit memo, rebate check and deduction from those vendors in the period, plus a month or two after it ends.
Your rebate accrual detail from the general ledger.

3. Check each program's terms

Tiers: thresholds and rates, and whether they're retroactive or incremental.
Purchase basis: gross or net of returns? Freight included? Any excluded product lines or special-pricing purchases?
Period: calendar year, fiscal year or quarters? Invoice date or ship date?
Growth programs: what's the baseline, and how is growth measured?
Claim rules: which programs pay automatically and which need a claim, and by when?
Payment timing: when should each payment have arrived?

4. Do the math

Calculate what each program owed using actual purchases.
Match credits received to programs and periods. Split bundled memos.
Build a table per vendor: owed, accrued, collected, gap.
For each gap, write one line on the cause: missed tier, unclaimed program, short payment, unmatched memo, or basis difference.

5. Claim it

Send each vendor one claim with the calculation attached: purchases, tier, rate, owed, received, difference.
Reference the agreement section for each item.
Track responses and follow up every two weeks.
Fix the accrual rate going forward so the same gap doesn't reopen.

6. While you have the data

Find any tier pushes from the last year and check whether they paid, using the break-even calculator.
Set a quarterly reminder to reconcile owed vs. collected for these vendors.

Here's what the output looks like: a one-page sample report for a fictional distributor.

Common questions

How long does a rebate audit take?

For three vendors and 12 months of data, a few days of focused work once the documents are in hand. Collecting the documents, especially program letters and credit memo detail, usually takes longer than the math.

Do I need the vendor's cooperation to audit rebates?

Not to do the math. You need your own purchase history, the agreements and your record of credits received. You'll need the vendor to break down bundled memos and to pay claims.

How often should distributors audit vendor rebates?

A full audit once a year for your top vendors, plus a quarterly reconciliation of owed vs. collected. The quarterly check catches tier changes and short payments while they're still easy to fix.

Want this done for you? We'll audit your top 3 vendors for the last 12 months and send a one-page report in a week. Free. Request an audit.