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Field notes · POS

Interchange, assessments, and markup: the three layers under every swipe

Editor's field notes, drawn from three years of conversations with independent restaurant operators. As the verified community grows, these notes will incorporate direct member signal — with consent, always anonymized.

By The Editors, OrderBridgePublished

Restaurant worker holding a handheld POS device at the service counter.
Illustrative editorial image · OrderBridge field library

Recurring signal

The pattern

Most operators negotiate their processing rate as if it were one number. It is three, stacked on top of each other, and only one of the three is actually negotiable.

Interchange and network assessments are set by Visa, Mastercard, and the other card networks, published twice a year, and identical no matter which processor a restaurant signs with. Processor markup is the only layer that varies by vendor, by volume, and by negotiation. Operators who understood the split stopped arguing with salespeople about numbers that were never on the table.

Pull-quotes are editorial reconstructions of recurring operator accounts. Identifying details are changed.

Three layers, one bill, two of them fixed.

Every card transaction's cost breaks into interchange (paid to the customer's card-issuing bank, roughly 0.45% to 2.50%-plus $0.10 to $0.15 for in-person restaurant transactions depending on card type), network assessments (roughly 0.14% plus a small per-transaction fee, paid to Visa or Mastercard for use of their rails), and processor markup (the only layer set by the restaurant's actual payment company). Interchange alone typically represents 60% to 70% of the total processing cost on a statement.

Because interchange and assessments are published rate tables — reviewed and adjusted each April and October — a restaurant can look up exactly what any processor is required to pass through, and back into what portion of a quoted rate is actually markup. A salesperson who claims to offer "lower interchange" is describing something that does not exist as a negotiable line item.

"Once I understood two-thirds of the bill was fixed by Visa and Mastercard no matter who I signed with, the negotiation got a lot shorter and a lot more honest."

— owner-operator, full-service restaurant (details changed)

The pricing model determined how visible the markup was.

Flat-rate pricing (commonly around 2.9% plus $0.30) bundles all three layers into one number, which is simple to budget but hides the actual markup inside it — the processor absorbs interchange volatility and often recoups it at the next renewal. Interchange-plus pricing shows interchange and assessments as pass-through cost and adds a separate, visible markup, which is more work to read but the only structure that lets an operator actually see what they are paying their processor, distinct from what they are paying the card networks.

Restaurants processing above roughly $40,000 a month in card volume were the recurring threshold at which interchange-plus pricing reliably produced meaningful savings over flat-rate — reported in the 30% to 50% range in several operator comparisons — because the visible markup could be negotiated down independently of the fixed layers.

"The flat rate was easier to explain to my accountant. The interchange-plus statement was the one that actually let me negotiate something."

— general manager, two-location group (details changed)

The guest's card mix moved the bill more than any negotiation.

A regulated debit card can cost as little as roughly 0.05% plus $0.21 in interchange, while a premium rewards credit card can run 1.65% to over 2.50% plus a per-transaction fee — a multiple-fold difference on an identical $100 check, driven entirely by which card the guest chose to hand over. Operators who reviewed their monthly card-type mix, rather than only their blended effective rate, found the real driver of a rising or falling bill was often guest behavior, not a processor's pricing change.

This mattered most when Visa or Mastercard reviewed rewards-tier interchange, since even a modest per-category adjustment flows directly through on interchange-plus pricing and can shift a restaurant's blended rate meaningfully if its guest base skews toward premium cards.

"Our effective rate crept up two-tenths of a percent and we assumed the processor changed something. It was our own regulars switching to a rewards card."

— owner, fine-dining restaurant (details changed)

The effective rate was the only number worth comparing.

Operators who compared processors by headline percentage alone were routinely misled by per-transaction fees, monthly minimums, PCI fees, statement fees, and equipment leases layered underneath. The comparison that held up was total fees paid divided by total card volume processed over a representative month — the effective rate — benchmarked against a reported restaurant-industry range of roughly 2.3% to 2.7%.

A restaurant landing meaningfully above that range, after accounting for a genuinely premium card mix, had a markup conversation worth having. A restaurant already inside the range chasing a marginally lower headline number often found the switching cost and new-terminal disruption outweighed the saving.

"Every quote led with a lower headline rate. Dividing our actual monthly statement by our actual monthly volume was the only comparison that told the truth."

— operator, quick-service restaurant (details changed)

Three layers on a $100 check

The math

On an illustrative $100 restaurant check paid with a standard rewards credit card, interchange runs roughly $1.65 to $2.00, network assessments add roughly $0.15 to $0.16, and processor markup on a typical interchange-plus plan adds roughly $0.25 to $0.60. The first two layers are identical no matter which processor is chosen. Only the third is a negotiation.

Three layers of card-processing cost on a $100 restaurant checkOn an illustrative one hundred dollar check, interchange costs roughly one dollar sixty-five to two dollars, network assessments cost roughly fifteen to sixteen cents, and negotiable processor markup costs roughly twenty-five to sixty cents. Interchange and assessments are fixed by card networks regardless of processor.Two fixed layers, one negotiableIllustrative $100 check · standard rewards credit cardINTERCHANGE$1.65–2.00Fixed · set by card networksASSESSMENTS$0.15–0.16Fixed · same for every processorPROCESSOR MARKUP$0.25–0.60The only negotiable layerEvery quote should be read as: fixed + fixed + negotiable.
Illustrative breakdown using published 2026 interchange and assessment ranges. Actual costs depend on card type, entry method, and merchant category.

Context from operator conversations

The tools that came up

Featured in operator conversations

Toast

Toast recurs when operators want processing bundled with the POS relationship rather than sourced separately. That convenience makes reading the effective rate on the actual statement, not the headline quote, the important habit either way.

Learn more →

Affiliate partner. Full disclosure at /disclosure.

Source notes

Public documents behind the field notes

  1. Visa USA Interchange Reimbursement Fees and Mastercard U.S. Region Interchange Rates, current public rate tables.
  2. Published 2026 restaurant payment-processing fee ranges and interchange-plus versus flat-rate comparisons from industry payments guides.
  3. Visa/Mastercard interchange settlement terms affecting merchant rate-increase caps through 2030, as reported in payments trade coverage.

Source review: July 17, 2026. Interchange rates are reviewed each April and October and change without individual merchant notice.

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