You’ve decided to accept stablecoin payments — or at least to find out what it takes. The good news: it’s a sequence of five concrete decisions, not a research project. This guide walks through each one, in the order you’ll actually face them, and finishes with what the payment looks like from your customer’s side.
If you’re still weighing whether stablecoins make sense for your business, start with what stablecoin payments are and why they settle in seconds, then come back.
Step 1 — Choose which stablecoins to accept
You don’t need to support everything with a dollar peg. Three coins cover the overwhelming majority of real payment volume:
- USDC — the default for US-facing and developer-heavy audiences; broad chain coverage and a regulated issuer.
- USDT — dominant internationally, especially with customers who already hold it on Tron.
- PYUSD — smaller, but carries PayPal brand recognition with mainstream buyers.
Accepting a coin and settling in a coin are separate decisions — many merchants accept several and consolidate into one. The trade-offs are covered in our USDC vs USDT vs PYUSD merchant guide.
Step 2 — Choose which networks to offer
The same stablecoin lives on many chains, and your customer pays on one of them. Offer too few networks and you turn away buyers whose funds live elsewhere; offer too many and checkout becomes a wall of logos. Match the network list to who your customers are — Solana and Base for low fees and speed, Ethereum for treasury-grade settlement, Tron for international USDT holders. Our multi-chain networks guide breaks down how to pick, and the supported chains page shows what’s live on Plaidly today.
Step 3 — Decide who holds the keys
This is the fork in the road that shapes everything downstream:
- Self-custody. You generate and manage your own wallets. Nobody stands between you and your money — but you now run key management, per-chain address generation, deposit monitoring, confirmation logic and reconciliation yourself. Realistic if you’re crypto-native and BTC-first; a heavy lift otherwise.
- A payment gateway. The gateway generates a unique address per payment, watches the chains, applies the right finality rules, and hands you a clean “paid” event plus a ledger. You trade some control for not having to build a monitoring stack across every network you accept.
The honest framing: self-custody means you build the plumbing; a gateway means you integrate an API. Neither is wrong — but only one of them ships this quarter.
Step 4 — Integrate: hosted checkout or API
With a gateway, integration comes in two depths:
- Hosted checkout — you create a payment session with an amount and currency, redirect the customer to a checkout page (or embed it), and wait for the webhook. No blockchain code on your side at all. This is the right starting point for almost everyone.
- Direct API — you drive the flow yourself: create the session, render your own UI against the returned addresses and amounts, and consume payment events. Worth it when checkout is deeply embedded in your product — a marketplace flow, a Telegram Mini App, or software agents paying programmatically.
Either way, the contract is the same: create a session → customer pays → signed webhook tells you it’s final. Fulfill on the webhook, never on what the browser claims.
Step 5 — Reconciliation, accounting and the boring parts
A few operational habits separate merchants who love stablecoin payments from ones who get surprised:
- Reconcile against one ledger, not per-chain explorers. Every payment should map to a session ID, a transaction hash, and a settled amount in one place.
- Decide your settlement posture. Hold stablecoins, auto-convert, or off-ramp on a schedule — pick deliberately and record cost basis where your jurisdiction requires it.
- Handle the edge cases in policy, not in panic: underpayments, late payments after session expiry, and payments on a chain you didn’t quote. A good gateway surfaces these as explicit states rather than mystery deposits.
What your customers see: how to pay using stablecoins
The accept side only works if the pay side is effortless, so it’s worth knowing exactly what a customer does when they pay in stablecoin:
- They pick a stablecoin and network at checkout — ideally the ones they already hold.
- Checkout shows an amount and a payment address, usually as a QR code plus a wallet deep link.
- They confirm the transfer in their wallet (Phantom, MetaMask, a Telegram wallet, an exchange withdrawal — anything that can send the token on that network).
- The network confirms in seconds to a couple of minutes, checkout flips to “paid”, and the merchant fulfills.
Two things commonly break this flow, and both are solvable on the merchant side. First, gas: a customer holding 20 USDC but zero ETH can’t pay on Ethereum unless the checkout is gas-abstracted. Second, wrong-network transfers: the checkout should make the chosen network unmissable and quote per-network addresses, so funds can’t land where nobody is watching.
How Plaidly fits in
Plaidly is the gateway version of everything above. You create one payment session; we generate the hosted checkout, watch the chains you enabled, apply per-chain finality rules, and deliver a signed webhook when the money is final — with payouts, refunds and one ledger behind the same API. Ethereum and Solana rails are live in sandbox today with more networks staged behind them, so you can integrate and test the full flow end-to-end before real money moves. The request shapes and a quickstart live in the Plaidly docs, and support can trace any payment from session ID to on-chain hash.
Accepting stablecoins used to mean becoming a blockchain company. Now it means five decisions and an afternoon with an API reference — and the first four decisions are reversible.