A merchant processing statement is usually 4–8 pages of mostly impenetrable tables. The good news: 90% of the information you need is in three sections. Read those, ignore the rest, and you can audit your processor in under ten minutes.
Section 1: Summary page
The first page lists your gross sales, fees, and net deposit. Two numbers matter here: total volume and total fees. Divide one by the other and you have your effective rate — the only number that's truly comparable across processors.
- Gross sales: total card volume processed
- Total fees: every charge the processor took
- Effective rate: Total fees ÷ Gross sales × 100 = your real cost as a percentage
- Net deposit: what actually hit your bank account
Section 2: Card-type breakdown
Somewhere in the middle of the statement, you'll see a table grouping transactions by card type — Visa Debit, Mastercard Credit, Visa Rewards, etc. On a tiered plan, this is where the processor decides which transactions are "qualified" vs. "non-qualified."
Look for: any category labeled "non-qualified" or "mid-qualified" with a rate above 3%. On interchange-plus, you'll see actual interchange categories like "VS CPS Retail Debit" or "MC Merit III" with their real network rates listed.
Section 3: Fees and other charges
The last 1–2 pages list every fee. Cross-check each line against your processor agreement. Common overcharges hide here:
- PCI Non-Compliance Fee — $20–$40/mo if you haven't filed your annual SAQ
- Statement Fee — flat monthly charge ($10–$30) regardless of volume
- Batch Fee — per-batch settlement charge ($0.10–$0.25 each)
- Regulatory Recovery Fee — vague catch-all used to pass through processor costs
- Visa/MC Assessment — legitimate (around 0.14% + $0.0195), but verify it isn't padded
- Address Verification Service (AVS) — $0.01–$0.05 per transaction on keyed payments
Three red flags to escalate
First, a rate that has drifted. Many processors quietly raise rates 25–50 basis points after the first year. Compare this month's effective rate against the rate you signed up for.
Second, a sudden new line item. Processors are required to give 30-day notice on new fees, but they bury it in the statement. If you see a new line, ask for written justification.
Third, a non-cancellable equipment lease. If you see a separate ACH debit from a name that isn't your processor (often Northern Leasing, First Data Global Leasing, or LADCO), pull the lease contract and verify the term.
If your effective rate is above 3% on retail in-person volume, or above 3.5% on e-commerce, you're paying too much. Pull three months of statements, calculate the effective rate on each, and use that as the baseline for any quote you compare against.