At a glance
Base on Paymos
Supported assets
- USDC USD Coin
Confirmation speed
| Up to $100 | 5 blocks |
| Up to $1,000 | 15 blocks |
| Up to $10,000 | 30 blocks |
| Larger amounts | 100 blocks |
Paymos accepts USDC on Base. Every invoice receives a dedicated address, confirmation runs from 5 blocks on a small payment to 100 on a large one, and the confirmed amount is credited to the merchant's USDC balance without a forced conversion or a markup hidden in a rate.
What Paymos accepts on Base
Base has one payment asset: USDC. USDT, USD1, DAI and XAUT have no Base route, so a customer holding USDT has to pay on a different network or a different way.
ETH is not the invoice asset either, and there is a trap worth naming: the ETH that pays a Base fee has to be on Base. A balance sitting on Ethereum mainnet cannot fund a Base transaction, which is the most common reason a payer's wallet refuses to send.
How a Base USDC payment works
- The merchant creates an invoice through checkout, Payment Links, POS, a CMS plugin, Low-Code SDK, or REST API.
- The customer selects USDC on Base.
- Paymos assigns a dedicated deterministic address to the invoice.
- The customer sends the displayed USDC amount on Base.
- Paymos detects the transaction and waits for the depth that amount requires.
- The confirmed amount is credited to the merchant's USDC balance.
HMAC-SHA256-signed webhooks report status changes to the merchant's application, which keeps the payment linked to the order without merchant-operated blockchain monitoring.
Confirmations depend on amount
Base runs four tiers keyed to the invoice's dollar value: 5 confirmations up to $100, 15 up to $1,000, 30 up to $10,000 and 100 above that. Those are configured depths, so they change only when Paymos changes them — unlike the network fee, which the chain sets.
Use the Paymos invoice status before fulfilling an order. A wallet broadcast alone is not a final payment signal, and network conditions can affect how long the invoice remains pending.
Base gas and Paymos fees
The customer's wallet pays the Base network fee in ETH, on Base. The fee goes to the network and changes with it, so no fixed transfer cost is promised anywhere on this page.
Paymos covers the network cost of accepting and consolidating the payment. Standard pricing is 1.0% per settled invoice; Enterprise is 0.3% on request. There is no setup fee, monthly fee, minimum volume, reserve, rolling reserve, or charge for unpaid, expired or cancelled invoices.
Settlement stays in USDC
USDC received on Base is credited as USDC — not exchanged for another stablecoin, not converted to fiat, and not quietly reduced through a rate.
One asset on the way in does not mean one network on the way out. The Base receipt joins the same USDC balance as every other supported chain, and the merchant picks the payout network and a whitelisted destination when withdrawing.
Paymos adds no processing commission to withdrawals. The selected payout network can carry a network fee — subsidised, so it lands under what that chain charges to move the funds, and never a Paymos margin.
When Base is useful
Offer Base when customers already hold USDC there and keep ETH on the same network for the fee. It sits beside the other supported networks in one checkout, without a separate merchant integration.
Do not route a customer by ticker alone. Show the exact network, and remember that a payer who says they "have ETH" may have it on the wrong chain.
Integration and custody controls
Hosted Checkout, Embedded Checkout, Payment Links and Low-Code SDK display the asset, network, amount, address and QR data. H2H REST API, POS and official CMS plugins support other merchant workflows.
Outgoing transactions are signed on isolated infrastructure. Withdrawal whitelisting separately restricts payout destinations.
Frequently asked questions
Which stablecoin can Paymos accept on Base?
USDC, and only USDC. USDT, USD1, DAI and XAUT have no Base route.
Can a customer send USDC from Polygon to a Base invoice?
No. Polygon and Base are separate networks, and the invoice is closed only by USDC that crossed Base.
Does the customer need ETH?
The sending wallet needs ETH on Base itself. ETH held on Ethereum mainnet cannot pay a Base fee, and neither is credited to the invoice.
How long does a Base payment take?
From 5 confirmations up to $100 to 100 above $10,000. There is no guaranteed clock time, because block production is the network's business.
Does Paymos convert Base USDC?
No. The payment is credited to the merchant's USDC balance.
How do I enable Base payments?
Enable USDC on Base in your Paymos integration. Compare the supported networks or review the USDC payment gateway.