The weAudit Gateway Scorecard · No. 2
Stripe Review: Flat-Rate Fees, Interchange Impact, and Our Rating
The most beloved name in payments, graded the way we grade everything: by what it actually costs merchants.
4.25
out of 10
Last updated July 2026
2.9% + 30¢
Every card. Every time. No matter what it actually costs
Stripe charges the same flat rate whether your customer pays with a regulated debit card that costs a fraction of a percent in interchange or a premium corporate card that costs far more. The difference between what the card actually costs and the 2.9% you pay does not disappear. Stripe keeps it. Flat-rate pricing is not simple pricing. It is undisclosed pricing.
The Paper Trail
Who Owns Stripe?
2010
Founded by the Collison brothers
2011
Public launch
“Seven lines of code”
2026
Valued at $159 billion, still private
No IPO, no acquirer
Gateway and Processor in One
Stripe is your gateway, your processor, and your merchant account, all in one. Convenient? Absolutely. It also means there is nobody to shop against, nothing to unbundle, and no interchange line item to audit.
Follow the Money
The $159 Billion Question
Investors recently valued Stripe at $159 billion. A valuation is not a compliment. It is an expectation: the money behind that number expects returns, and returns have to come from somewhere. For Stripe, that somewhere is the spread between what your transactions actually cost in interchange and the flat 2.9% you pay.
So ask the question nobody asks: how much must a payments company be making on merchants for investors to price it at $159 billion? Every basis point of spread on every transaction is funding that expectation. The valuation is a mirror. What it reflects is your processing statement.
The Popularity Trap
Why Is Stripe So Popular?
Simple: developers love it. Stripe built the best API and the best documentation in the payments industry, and its founding legend is that you could start accepting payments with seven lines of code. When a merchant asks “what should we use,” the engineering team answers instantly, and the answer is Stripe.
Here is the problem. The people recommending it are not interchange experts. They are judging Stripe by how elegant the integration is, not by what flat-rate pricing does to your cost of acceptance. They have no idea what the spread between real interchange and 2.9% is costing the company, because that number never appears in the developer’s world. It never appears anywhere. That is the design.
The Scorecard
How Stripe Scores
Interchange
2/10
You Never See Interchange
Interchange makes up over 80% of total processing costs, and on Stripe it is completely invisible. Flat rate blends every card into one number, so a low-cost debit transaction and a premium rewards card both bill at 2.9% plus 30 cents, and the spread between the real cost and your rate stays with Stripe. There is no Level 2/3 optimization benefit on standard pricing, no downgrade report, and no way to see what you are actually paying for each card. You cannot manage what you are never shown.
Flat-Rate Fees
3/10
The Floor, Not the Average
The 2.9% plus 30 cents headline is where the cost starts, not where it ends. International cards add 1.5%, currency conversion adds another 1%, disputes cost $15 each, and add-ons like Billing stack their own percentages on top. For established merchants with real volume, flat rate is almost always dramatically more expensive than a properly configured interchange-plus setup.
Lock-In
3/10
No Separation of Powers
With a traditional setup, the gateway and the processor are separate, which means you can shop processors, negotiate rates, and keep your gateway. Stripe bundles all of it. There is no bid to run, no markup to negotiate line by line, and the deeper your subscriptions, invoicing, and reporting live inside Stripe, the more expensive leaving becomes. That is not an accident.
Credit Where Due
9/10
The Best Developer Experience in Payments
Credit where it is due: Stripe’s technology is genuinely the best in the industry. The API, the documentation, the built-in 3D Secure 2.0, the Radar fraud tooling, the uptime. If you are a startup writing your first line of payments code, there is nothing easier. Our issue has never been whether it works. It is what it quietly costs once you are no longer a startup.
“Built for developers. Paid for by merchants.”
Beyond the Scorecard
Are You Even on the Right Gateway?
A scorecard tells you about the gateway. An audit tells you about YOUR gateway, on your card mix, your industry, and your statements. Every weAudit engagement reveals:
✓Whether you are on the right payment gateway for your business, or quietly paying for the wrong one
✓Missed interchange qualifications and forced downgrades
✓Incorrect setups: interchange flags, MCC codes, shopping carts, and gateways
✓Hidden, inflated, and made up fees buried in your statement
✓Processor markups and kept interchange rebates
✓PCI non-compliance fees you may not even owe
✓Contract traps: auto renewals, exit penalties, and terms working against you
✓Incorrect MCC codes costing you specialty interchange rates
✓And much more. If it is on your statement, we audit it.
Common Questions
Stripe FAQ
Does Stripe support Level 2 and Level 3 processing?
Not in any way that helps a standard merchant. On flat-rate pricing, you pay 2.9% plus 30 cents regardless of how the transaction qualifies, so enhanced data provides no benefit to you. Interchange optimization only becomes possible on negotiated interchange-plus arrangements, which Stripe reserves for very large volume accounts.
How much does Stripe really cost?
The headline is 2.9% plus 30 cents per online card transaction with no monthly fee. The real number climbs from there: 1.5% more for international cards, 1% for currency conversion, $15 per dispute, and stacking percentages for add-ons like Billing. Businesses with international customers routinely see effective rates well above 4%.
Is Stripe good for B2B companies?
B2B is where flat rate hurts most. B2B merchants see large tickets and heavy corporate card usage, exactly the transactions where interchange optimization and Level 2/3 data produce the biggest savings, and none of that value reaches you on Stripe’s standard pricing. A B2B company processing serious volume on flat rate is leaving real money on the table every month.
Who owns Stripe?
Stripe is privately held, founded in 2010 by brothers Patrick and John Collison, who still run it. A February 2026 tender offer valued the company at $159 billion. Unlike Authorize.net, Stripe has never been acquired. It does not need to be. It is the gateway, the processor, and the merchant account all at once.
Should I switch away from Stripe?
It depends on your volume, your card mix, and how deep your business is built into Stripe’s stack, which is exactly what an audit determines. For an early-stage company, Stripe’s simplicity may still be worth the premium. For an established merchant, the math usually says otherwise. Upload a statement and we will tell you which one you are.
Are You Paying the Flat-Rate Tax?
If you run on Stripe, your statements will show exactly how much the spread between real interchange and your flat rate is costing you, and whether your volume has outgrown flat-rate pricing entirely. Upload a statement and we will show you, line by line. No obligation. Just answers.
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Written by the team at weAudit, founded by a Former Executive for the World’s Largest Credit Card Processor. Forbes Business Council. Entrepreneur Contributor.
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