Blended Pricing

Also called bundled pricing, blended rate, one-rate blend

One averaged rate applied to all your card volume, with interchange, assessments and markup fused into a single number you can't unbundle.

What it is

Blended pricing charges a single rate across all card types - for example 2.65% + $0.15 on everything. It differs from flat-rate pricing mainly in origin: flat-rate is a published consumer-style price from a fintech, while blended is a negotiated number from a traditional acquirer, usually built off an analysis of your last few months of card mix. The blend is calculated from your historical mix and then frozen. If your customers shift toward debit, the processor's margin widens and your price does not move. If your mix shifts toward premium rewards or commercial cards, the processor's margin narrows - and this is the part that matters - most blended agreements include a repricing clause that lets the acquirer adjust when mix moves against them, but nothing that obliges them to adjust when mix moves in their favor. Blended pricing is sometimes correctly used. Very small merchants, seasonal businesses, and merchants with erratic mix genuinely benefit from a stable number. It is also the most common structure quoted to restaurants and retail shops in a first conversation, because it produces the lowest-sounding single number a rep can put on a page. As with tiered and flat-rate, it is a fixed price, not a pass-through. Every interchange reduction arriving between now and 2031 under the MDL 1720 settlement lands in the processor's spread, not your bank account.

Why it matters to your business

A blended rate is fine as long as you re-audit it annually, and almost nobody does. The typical pattern is a competitive blend at signing that becomes a poor deal within 24 months through mix drift and quiet repricing. On $60,000 a month, 30 basis points of drift is $180 a month, $2,160 a year - accumulated invisibly, with no notice you would have recognized as a price increase. Compute your effective rate every January. If it has moved and nobody told you, that's your conversation.

Where it gets contested

The fight over blended pricing is not about deception - the rate is what it says. It is about asymmetry of information and of adjustment. The processor knows your card mix precisely, because they process it. You do not, unless you ask for a mix report. They set the blend at a level that clears their target margin against that mix, then keep the entire benefit of any favorable drift. Debit share rising, average ticket rising, more contactless and fewer keyed transactions - all of these lower the processor's cost under a blend and none of them lower your price. The adjustment clause is the sharper issue. Read the contract for language allowing rate changes on 30 days' notice for changes in interchange, card mix, or 'cost of doing business.' It is nearly universal, it is one-directional in practice, and it is the mechanism behind the slow creep merchants notice two years in when their effective rate has drifted 30 basis points without anyone calling them. What processors don't say: a blend is the pricing model with the highest margin variance in their book, which is precisely why it is offered to the merchants least able to audit it.

How to check it yourself

Compare the effective rate on your most recent statement to the effective rate from the same month a year ago. Then request a card-mix report - the percentage of volume by debit, consumer credit, rewards, and commercial. If debit share is up and your rate is flat, the processor's margin has grown. Ask them to reprice, or ask for interchange-plus.

Receipts

Claims above that are checkable, with where to check them. Published so you do not have to take anyone's word for it.

Interchange reductions do not flow to merchants on bundled pricing because processors control pass-through
merchantcostconsulting.com ↗
The 2026 settlement freezes posted interchange rates at March 31, 2025 levels for five years and provides a 10 bps average reduction
americanbar.org ↗