American Express (Amex)

What American Express is

American Express is a card network and card issuer. It also operates as an acquirer for merchants, giving it a direct role across the payment process. Visa and Mastercard primarily connect separate issuing banks and acquiring providers; Amex’s closed-loop model brings those functions together.

When a customer pays with an Amex card, your point-of-sale system sends an authorization request. Amex checks the account and transaction, then approves or declines it. After you submit the transaction for settlement, Amex deposits the funds minus the merchant fees in your agreement.

The right question is whether the extra Amex fee costs less than the sales you would lose by declining the card.

What it means for your costs

You pay a fee when customers use Amex. Amex’s merchant fees are generally higher than Visa and Mastercard fees, but the exact amount depends on your processing arrangement. The available research does not establish one universal Amex rate, so a quoted rate without the pricing model and fee details is not enough to compare.

For merchants processing less than $1 million in Amex transactions annually, OptBlue offers an alternative to traditional Amex pricing. Under OptBlue, your processor sets the acceptance rates. The processor’s markup is the part you can negotiate, while interchange and network fees are not negotiable.

Does the extra fee pay for itself?

Illustrative only. Your actual Amex fee difference depends on your processing agreement and transaction mix.

When accepting Amex makes sense

The useful comparison is the extra cost against the sales you would lose without Amex. For example, if an illustrative $100 Amex sale costs your business $1 more in processing fees than another card, you need at least $1 in additional gross profit from that sale to cover the difference. Your actual fee difference depends on your pricing and transaction mix.

Acceptance also varies by merchant. Some customers expect to use Amex, while some businesses decline it because of its fees. Measure Amex sales and compare the fees against the gross profit on those sales before deciding whether the cost earns its place.

How to compare your Amex pricing

Compare the effective cost of Amex sales with other card sales over the same period. Use the Amex transaction volume and total Amex fees, then divide fees by volume. Check whether your agreement uses OptBlue or traditional Amex pricing, and separate the processor’s markup from pass-through charges. The research does not provide a standard Amex statement line name, so use your processor’s transaction and fee reports to identify the amounts.

What you can actually change

1. 01
   Identify your pricing. Find out whether your Amex transactions use OptBlue or traditional Amex pricing. If you process under $1 million in Amex transactions annually, confirm whether OptBlue applies to your account.
2. 02
   Separate the markup. Ask for a breakdown of Amex fees that separates processor markup from pass-through charges. Negotiate the markup, not interchange or network fees.
3. 03
   Measure the tradeoff. Compare Amex fees and sales with your other card sales over the same period. Keep accepting Amex when the gross profit from those sales justifies the added processing cost.

Frequently asked questions