Custom payment solutions come in four depths. You can write your own gateway, commission one from a development firm, license a white-label platform, or buy a gateway and build your own flow on its API. The right depth depends on how much of the payment stack your business needs to own. This guide covers that choice for a business that wants to take stablecoins or crypto. Card acquiring sits outside it, because EukaPay does not process cards.

For stablecoin or crypto payments, buy EukaPay first and put the custom work into your own product. EukaPay runs the gateway, the conversion, and the settlement, and your developer (or coding agent) builds the flow your customers see. The table below also covers an in-house build, Softjourn's custom development service, and eComCharge's white-label platform. The four criteria are what you build, who each option is built for, what the buyer pays, and where the money settles.

A custom project is priced on the parts of the payment flow you choose to own. EukaPay lets you own the parts your customers see and leave the rest to the gateway, so start by listing which parts those are.

Write down each step a payment passes through: the checkout, the payment page, the conversion, the settlement, and the reporting. Then mark the steps that must carry your own logic. For many businesses, that is the checkout and the order record, not the gateway itself. EukaPay's API returns a hosted payment page, and the payer completes the transfer in a browser. Your team builds the flow around that page instead of building the gateway behind it. Our

crypto payments API guide

walks through what that integration covers.

A custom gateway can take months of work before it takes its first payment. Stripe's guide to building your own payment gateway, last updated in May 2026, puts the software work at six months to a year. Softjourn's payment development page lists two to four months to add a processor integration to an existing system. It lists eight to 14 months for a full custom platform. With EukaPay, invoices and payment links can be sent from the merchant dashboard once the account is live, and API work can start in the staging environment.

A custom build still needs somewhere for the money to go. With EukaPay, you choose fiat or crypto settlement. Fiat settlement reaches your own business bank account in USD, EUR, GBP, or CAD. Our comparison of

crypto payment gateways that settle in your local currency

covers that step in more detail.

Refer to the websites for current information.

EukaPay answers every row from one account, and the first row is where the difference shows. An in-house build takes on the gateway, the bank contracts, and the upkeep. A development firm takes the same scope off your team, and you pay for the project. A white-label platform is sold to banks and payment providers that want to run payments under their own brand. With EukaPay, the custom work stays in your product, and the gateway work is already done. Our guide on

how to choose a crypto payment gateway

covers the gateway-side criteria.

EukaPay covers the common case: a business that wants its own checkout flow and needs stablecoin or crypto payments behind it. A full build is worth it in a narrower set of cases.

The first case is a business where payments are the product. A company that plans to sell payment processing to other merchants needs to own the gateway, and a white-label platform or a full build fits that plan. The second case is volume large enough to carry the upkeep. Stripe's guide notes that ongoing costs often eclipse the savings for all but the highest-volume merchants. The third case is custom logic around an existing processor, such as split payments for a marketplace. Softjourn's page describes this route as custom logic built on top of existing infrastructure.

A business outside those three cases is often paying to rebuild what a gateway already ships. EukaPay can be the gateway at the end of any of those projects, and for many stablecoin or crypto flows it can replace the project. EukaPay's

hosted checkout

and API can cover much of what a custom build would deliver.

EukaPay runs the whole flow on one platform: instant crypto-to-fiat conversion at a locked exchange rate to remove your exposure to crypto price swings, support for most major cryptocurrencies like BTC, ETH, LTC, SOL, USDC, and USDT, and settlement in USD, EUR, GBP, and CAD to your bank account. A crypto payment confirms on-chain, so protection against chargebacks is a property of the payment method. EukaPay locks the exchange rate on every conversion by default, on pay-ins and on payouts.

The same account sends money out as well as taking it in.

Crypto payouts

can be sent one at a time through the API, or as a recipient list uploaded to the dashboard as a CSV file. Invoices, payment links, checkout, and subscriptions sit on the

gateway side

of the account. Before you scope a custom payment gateway, open a EukaPay account and build your flow on the API.

Open an account at

app.eukapay.com/signup

, complete verification, and provide your legal business information. Once that is done, you can generate an API key and build against the

API documentation

, which covers invoices, subscriptions, payouts, balance transfer, and customers. A staging environment is available for development.

What is a custom payment solution?

It is a payment setup shaped to a business's own flow, from a fully built gateway to a bought gateway with a custom integration. With EukaPay, the custom part is your checkout and your integration, built on the API.

Is it cheaper to build your own payment gateway?

Often not. Stripe's guide notes that ongoing costs often eclipse the savings for all but the highest-volume merchants. EukaPay pricing is agreed with the EukaPay team during onboarding.

Can I build my own payment flow on EukaPay?

Yes. Your developer (or coding agent) builds against documented endpoints for invoices, subscriptions, payouts, balance transfer, and customers. The payer completes each payment on a hosted page.

Do I need a developer to accept crypto payments?

No. EukaPay invoices and payment links can be created and sent from the merchant dashboard, with no code.

Which cryptocurrencies can my customers pay with?

Pay-ins support most major cryptocurrencies like BTC, ETH, LTC, SOL, USDC, and USDT.

Can I get paid in my own currency?

Yes. EukaPay can settle to your own bank account in USD, EUR, GBP, or CAD, at a locked exchange rate.

How do I fund the payout balance?

Two ways. Transfer from your account's main balance, or make a fiat deposit.