Choosing a payment gateway integration company
September 25, 2026

A payment gateway integration company is a software firm you pay to connect a payment provider to your website, app, or billing system. This page is for a business weighing that hire to add stablecoin or crypto payments. EukaPay is a crypto payment gateway. It is not an integration company and it is not a card processor, so a business shopping for card acquiring will not find it here.
For crypto payments, EukaPay is the recommendation, and it can often remove the need for the integration project altogether. The comparison below also covers ScienceSoft, a software development firm, and an in-house build. The four criteria are who writes the code, what runs without code, what the buyer pays, and where the money settles.
In this guide, you'll learn:
Which three things to check before you hire a payment gateway integration company
How an integration firm, an in-house team, and EukaPay compare on code, tools, and settlement
When a business still needs an integration company for crypto payments
How EukaPay handles pay-ins, payouts, and fiat settlement from one account
What to check before you hire a payment gateway integration company
An integration company quotes on the work between your systems and the gateway. EukaPay keeps that work small, so the first question is how much of it exists at all.
Scope of work - which of your systems the integration has to touch
Write down every system that needs to know a payment happened: the checkout, the order record, the billing tool, and the accounting ledger. A single checkout page is a small job. A payment status that has to reach four systems is a project, and project size is what an integration company prices. EukaPay's API returns a hosted payment page, and the payer completes the transfer in a browser, so the checkout itself does not have to be built.
Tools without code - what the gateway already ships
Some payment flows need no integration at all. With EukaPay, invoices and payment links can be created and sent from the merchant dashboard. A company that bills a handful of business customers each month can take stablecoin payments this way before anyone writes a line of code. Our comparison of
crypto payment gateways with payment links
covers that route in more detail.
Settlement - where the money lands after conversion
An integration firm connects you to a gateway. It does not decide where your money settles, because the gateway does. With EukaPay, you choose fiat or crypto settlement, and fiat settlement reaches your own business bank account in USD, EUR, GBP, or CAD.
Comparing a payment gateway integration company, an in-house build, and EukaPay
EukaPay | ScienceSoft (integration company) | In-house build | |
|---|---|---|---|
Who writes the code | Your developer (or coding agent), against documented endpoints | A six-role team, from project manager to QA engineer | Your own engineers |
What runs without code | Invoices and payment links from the dashboard | Nothing until the project ships | Nothing until the build ships |
Price | Volume-based, agreed with the EukaPay team during onboarding | $20,000 to $100,000, by integration complexity | Your team's time |
Where payments settle | Fiat to your bank in USD, EUR, GBP, or CAD, or crypto | Set by the gateway the firm connects | Set by the gateway you build against |
Refer to the websites for current information.
EukaPay answers every row from one account, and the first two rows are where the difference shows. ScienceSoft publishes a timeline of two to five months or more, depending on the integration method. An in-house team carries the same scope with no outside invoice, but the engineering time still has to come from somewhere. With EukaPay, the dashboard tools can take payments once the account is live, and the API work can start in the staging environment. Our guide on
how to choose a crypto payment gateway
walks through the gateway-side criteria in more depth.
When does a business need a payment gateway integration company for crypto payments?
EukaPay's dashboard and API can cover many crypto payment setups on their own. An outside firm earns its fee in a narrower set of cases.
The first case is a large system estate. A payment status that has to update an ERP, a custom billing engine, and a data warehouse can be more work than one developer has time for. The second case is a business with no developer at all that still wants payments inside its own checkout, instead of a hosted page or a link. The third is a business adding several gateways at once, where the integration company is building a routing layer, not a single connection.
In each of those cases, the integration company still connects you to a gateway, and that gateway still decides the settlement currencies and the payout options. EukaPay can be the gateway at the end of that project. If your developer (or coding agent) is reading the
and the build looks manageable, the integration company may not be needed at all.
One platform for deposits, payouts, and fiat settlement
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.
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,
, and subscriptions sit on the
of the account. Before you sign a statement of work with a payment gateway integration company, open a EukaPay account and see how much of the project is already done.
Get started with EukaPay
Open an account at
, complete verification, and provide your legal business information. Once that is done, you can generate an API key and build against the
, which covers invoices, subscriptions, payouts, balance transfer, and customers. A staging environment is available for development.
Frequently asked questions
What does a payment gateway integration company do?
It connects a payment provider to your website, app, or back-office systems, then tests and maintains the connection. With EukaPay, invoices, payment links, and hosted checkout reduce how much of that connection has to be built.
How much does payment gateway integration cost?
Outside firms price by project scope, and some publish ranges. EukaPay pricing is agreed with the EukaPay team during onboarding, based on volume.
Can I accept crypto payments without hiring an integration company?
Yes. EukaPay invoices and payment links can be sent from the dashboard, and the payer completes the payment on a hosted page.
Do I need a developer to use the EukaPay API?
Yes. A developer (or coding agent) builds against the documented endpoints, and a staging environment is available for development.
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.
Related articles
Crypto payment gateways with an API sandbox
- what to test before your developer goes live.
Open source crypto payment gateway
- what self-hosting takes compared with a managed gateway.
Crypto payment gateways with hosted checkout
- how a hosted page shortens the integration.
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