OptBlue lets a processor, not Amex, set your Amex rate

The workload

Before OptBlue existed, a small merchant who wanted to accept American Express cards had to sign a separate merchant agreement directly with Amex, on top of whatever agreement covered Visa, Mastercard, and Discover. Amex's own OptBlue program page replaces that with one step: "third-party providers sign a contract directly with eligible businesses to enable American Express Card acceptance," so the workload for a founder is enrollment with one processor rather than two merchant relationships, one combined statement, and one support contact for every card brand. Amex's own Payment Facilitator fact sheet describes a parallel route for platforms: a payment facilitator with under $250 million in annual Amex charge volume can offer Amex acceptance to its own sponsored merchants through a certified OptBlue participant.

What the documents show

Verified: Amex's own program page states "your provider sets your American Express rate — just like they do for the other card brands you accept," meaning the discount rate a merchant pays is not an Amex-published number; it is whatever the enrolling processor quotes. Verified, same page: eligibility is bounded by Amex's own Estimated Annual Charge Volume (ECV) test — "U.S. businesses that have American Express Estimated Annual Charge Volume (ECV) of less than $3MM per year may be eligible" — with named exceptions carrying no ECV ceiling at all: "Charity, Education, Government, Healthcare, Insurance, Online Gambling and Games of Value, Residential Rent, and Utilities," and a stated minimum ECV of $1,000,000 specifically for Games of Value merchants. Verified, from the fact sheet: "American Express does not charge a registration fee to participate in OptBlue," and the program's own description of its purpose is offering acceptance "with flexibility in rates" rather than one fixed schedule. A processor's advertised OptBlue rate, wherever a founder sees one quoted, is that processor's own offer, not Amex's program rate.

The operating cost

Amex's own materials name no rate, so the cost of accepting Amex under OptBlue is whatever line item the enrolling processor states on its own pricing page, typically blended with that processor's Visa/Mastercard/Discover rate into one figure. That number belongs to the processor's own documentation, not Amex's, and should be sourced there before being treated as verified.

The stop condition

Editorial: OptBlue stops being the obvious path once a merchant's charge volume approaches Amex's own $3MM ECV ceiling, since above it Amex's page implies eligibility for the processor-priced program itself is in question; the page does not state what happens procedurally at that threshold, only that eligibility is described as under it.

• What Amex discount rate does this business's specific processor actually quote, separate from its Visa/Mastercard rate?
• Does this business's estimated annual Amex charge volume sit close enough to $3MM that eligibility should be rechecked?
• Would a direct Amex merchant agreement, negotiated outside OptBlue, beat the processor's blended rate at current volume?

OptBlue removes a contract, not a cost. The rate a founder pays for Amex acceptance is still set by a processor's own pricing page, and Amex's own program materials say so plainly rather than publishing a number to replace it.