If you are pre-launch, payments probably feel like plumbing — invisible until it breaks. Treat that instinct as a warning sign. The processor you pick in week one will shape your refund rate, your cash flow, and your ability to expand internationally for years.
The decision is mostly about three things
Founders often get lost in marketing pages comparing 2.7% to 2.9%. The actual decision is much simpler:
1. Coverage. Where are your customers, and what payment methods do they use? A U.S.-only processor will cost you EU sales the day you launch in Berlin. 2. Payout speed and currency. Daily payouts in your home currency are table stakes. Multi-currency holding accounts are not — but they will save you 1-3% in FX once you have international revenue. 3. Platform features. If you will ever pay other people (contractors, hosts, sellers), you need connected-account support from day one.
Get those right and you can re-negotiate fees later. Get them wrong and migrating later is painful and expensive.
Aggregator vs traditional, revisited
For 95% of startups, an aggregator (Stripe, Square, Cenoa, PayPal) is the correct first move. You get instant onboarding, modern APIs, and reasonable defaults. The implicit tradeoff is that you share a master merchant account, which means the aggregator decides who is "high-risk" and can offboard you with little notice.
If you are in a regulated or notoriously high-risk space — supplements, dating, gambling, debt collection — go straight to a high-risk-friendly provider. Trying to start on Stripe and "see if they catch it" almost always ends in a frozen account three months in.
The hidden costs
Headline rates only describe successful card transactions. The full cost picture also includes:
- Disputes. $15-25 per chargeback, win or lose.
- Currency conversion. 1-3% margin on every cross-currency charge.
- Cross-border fees. Often an extra 1-1.5% for non-domestic cards.
- Reserves. Some processors hold a percentage of your revenue for 90-180 days.
- Refund fees. A few processors keep the original processing fee even on refunded transactions.
For a startup doing $100k a year, the difference between a "cheap" processor with 2% extra hidden fees and a "expensive" one with none is around $2,000 — meaningful, but rarely the deciding factor compared to the items in the previous section.
The mistakes founders make
- Not enabling 3D Secure for European cards. PSD2 has made it effectively required.
- Not setting a per-charge maximum. A buggy form can loop and trigger 100 charges before anyone notices.
- Not turning on automatic tax (Stripe Tax, Cenoa Tax) on day one. Backfilling sales tax later is brutal.
- Not testing the refund flow before launch. The first refund should never be the first time you click that button.
Cash-flow math
Most processors hold your first few payouts for 7 days while they assess risk. Plan around that. If you are running on tight cash, even 7 days of buffer can be the difference between making payroll and not.
How Cenoa Payment Helps
Cenoa Payment was built to remove the friction this article describes. Whether you are a freelancer collecting your first international invoice or a fast-growing merchant accepting payments in dozens of currencies, Cenoa gives you wallet, checkout, and payouts under one roof — backed by regulated payment and banking partners.
- Open a multi-currency wallet in minutes, no minimum balance.
- Accept cards, Apple Pay, SEPA, iDeal, bank transfers, and crypto from 195 countries.
- Pay and get paid by username, link, or QR code — no IBAN gymnastics.
- Real-time fraud and KYC tooling so your account stays in good standing.
If you are evaluating processors, sign up for free and try a real transaction end-to-end. Most teams know within an hour whether Cenoa fits their workflow.