The short answer
A card brand assessment is the fee Visa, Mastercard, Amex, or Discover charges on every transaction that touches their network. It's separate from interchange (which goes to the issuing bank) and from your processor's markup. Think of interchange as the issuer's fee, assessments as the network's fee, and processor markup as the acquirer's fee. All three show up on your statement, all three add to your effective rate.
The full assessment stack
Every transaction incurs multiple assessment fees. The common ones:
- Visa Assessment Fee: 0.14% on credit, 0.13% on debit.
- Mastercard Assessment Fee: 0.1375% on transactions under $1,000; 0.01% on transactions $1,000+.
- Visa Acquirer Processing Fee (APF): $0.0195 per authorized transaction.
- Mastercard NABU (Network Access and Brand Usage): $0.0195 per authorized transaction.
- Visa Network Integrity Fee ("fixed acquirer network fee" / FANF): Monthly fee on card-not-present volume, tiered by merchant.
- Visa International Service Assessment (ISA): 1.0% on cross-border transactions where issuer and acquirer are in different countries. Settlement in USD = 0.8%.
- Mastercard Cross-Border Fee: 0.60-1.20% cross-border depending on region.
- Amex Assessment Fee: 0.15% on OptBlue transactions.
- Discover Assessment Fee: 0.13%.
How they show up on your statement
On an interchange-plus statement, assessments appear as a separate section, often labeled "Dues and Assessments" or itemized by network. On a flat-rate or tiered statement, they're baked into the blended rate and invisible. Either way, they're part of the 2.3-2.5% fixed pass-through cost that sits below whatever your processor's markup is.
What operators need to know
- Assessments are not negotiable. Every processor pays the same published rates to the networks. No acquirer can "discount" your assessments — if yours claims to, they're either relabeling an interchange downgrade as an assessment, or they're lying.
- Assessments do change, usually annually. Visa and Mastercard publish rate changes in spring and fall each year. Most are rate hikes of 1-3 bps; some introduce entirely new line items (Visa added the Integrity Fee in 2023). Your processor will pass these through.
- Cross-border assessments are where surprises hide. If 10% of your volume is international, assessments alone add 15-20 bps to your effective rate on top of interchange's cross-border premium. Model it in your unit economics.
- Network brand monitoring fees are assessment-adjacent. If you're in a VAMP or ECP program, the networks charge additional monthly fees on top of assessments. Those show up in the same statement section.
- The assessment math rewards large tickets. Most assessments are percentage-based, but several are flat per-transaction fees (APF, NABU). Large-ticket businesses ($500+ AOV) have assessments closer to pure percentage; small-ticket businesses ($10-$30 AOV) get hit harder on the flat per-txn components.
Why this matters for multi-brand operators
Assessments scale with total volume across the portfolio, not per-brand. Moving four brands onto one parent merchant account doesn't save you any assessment dollars — they're pass-through. But consolidated volume does reduce the effective impact of flat network fees like Visa's Integrity Fee, which is tiered by portfolio size. See network assessments and credit card processing fees.