How to Audit Your Merchant Processing Statement

Start with the documents from the same month

Gather the signed pricing schedule, merchant statement, gateway invoice, settlement export, and bank deposits. Verify the merchant account identifier, currency, and statement period first. When one invoice covers several accounts, allocate only your relevant share and document your method.

Give every line item an owner

• Mark transaction percentages, fixed fees, monthly fees, event fees, reserves, and adjustments in separate categories.
• For fees based on count or volume, recompute the amount using the statement’s transaction totals.
• Track a fee charged under a name you do not recognize in an exceptions list with the page, date, and exact amount.

Keep a record of the resolution

Send the provider a short list of exceptions with the matching agreement line and your calculation. Ask where the fee is disclosed, what triggered it, and whether any correction will appear on the next statement. Recheck the following cycle and record the result.