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Official OpenCart Gold Partner

Payment integrations that hold up under pressure.

Taking a card is the easy part. We build gateway integrations that survive declines, dropped connections, duplicate clicks and refunds — so your orders are always right.

Card data never stored

Tokenised, minimal PCI scope

3D Secure ready

SCA-compliant authentication

Webhooks handled

Order statuses stay accurate

OpenCart 1.5.x–4.x

OCMOD / VQMOD, no core edits

Definition of done

A payment integration isn't finished when it takes money

It's finished when it survives everything that goes wrong afterwards. Most integrations are tested on the happy path only — here's everything we check before calling one live.

Successful payment
Order created, status correct, confirmation sent to the customer.
Declined payment
Clear message, cart preserved, customer can retry without starting over.
Customer abandons mid-payment
Webhook resolves the real status even if they never return to your site.
Duplicate submission
No double charges from a refreshed, resubmitted or double-clicked page.
Full and partial refunds
Issued from the OpenCart admin and reflected correctly in the order.
Currency and rounding
The amount charged matches the amount displayed, to the last decimal.
Timeouts and slow responses
Gateway delays don't strand an order in an undefined state.
Mobile checkout
Tested on real devices, not just a narrow desktop browser window.
Admin visibility
Transaction references stored, so support can trace any payment later.
Live transaction test
A real low-value payment taken and refunded before we hand over.

Why this matters: almost every payment problem merchants bring to us is an edge case nobody tested — an order marked unpaid after the money arrived, a customer charged twice, a refund that never reached the gateway. The first successful transaction proves very little on its own.

Two ways forward

Ready-made, or built for you

Most stores need one of these. We'll tell you honestly which one your situation calls for.

Fastest route

Ready-made gateway extension

Your provider is already one of the 32+ gateways we build and maintain. Install, configure, start accepting payments.

  • Live in days, not weeks
  • Already tested across OpenCart versions
  • Documentation and support included
  • Optional paid installation by our team
Browse gateway extensions
Anything else

Custom gateway integration

A regional bank, a niche processor, or your own in-house payment system. If it has documentation, we can build it.

  • Any provider with an API or hosted checkout
  • Refunds, webhooks and recurring billing included
  • Fixed price agreed before development starts
  • You own the resulting code
Get a custom quote
Security first

Your store should never hold a card number

The safest integration is one where sensitive data never reaches your server in the first place. That's how we build every gateway.

Tokenised, not stored

Card data goes straight to the provider. Your server only ever sees a token.

Smaller PCI scope

Hosted fields and redirect flows keep your compliance burden minimal.

3D Secure 2.0

Strong authentication implemented wherever the provider supports it.

Verified callbacks

Webhook signatures checked, so nobody can fake a paid order.

Sound familiar?

Signs your current setup needs attention

If any of these happen on your store, the integration — not the payment provider — is usually the cause.

Paid orders showing unpaid

Money reached the gateway but the order never updated. Almost always a broken or unverified callback.

Customers charged twice

A refreshed page or double-clicked button creating two transactions for one order.

Orders stuck mid-payment

Pending orders that never resolve either way, quietly piling up in your admin.

Refunds done manually

Your team logging into the gateway dashboard separately because OpenCart can't issue refunds.

Checkout breaks on mobile

Payment pages that work on desktop but fail, clip or redirect badly on phones.

Nobody can explain it

The original developer is gone and no one knows how the integration actually works.

We repair inherited and third-party integrations as often as we build new ones.

Request a payment audit
Getting started

What we need from you

Send these along with your first message and we can usually quote without a second round of questions.

  • 1
    Your payment provider
    The name of the gateway, or a link to their developer documentation.
  • 2
    Your OpenCart version
    Found under Dashboard → footer, or in your admin's system information.
  • 3
    Which methods you need
    Cards, wallets, bank transfer, cash on delivery, subscriptions — whatever applies.
  • 4
    Sandbox credentials
    Test account details from your provider, when you have them.
  • 5
    Anything already built
    If an integration exists, tell us what's broken or missing.

What happens next

  1. We review the documentation
    Our developers check what the provider's API actually supports.
  2. You get a scope and fixed price
    Deliverables and cost agreed in writing before any work starts.
  3. We build against sandbox
    Full flow developed and tested in the provider's test environment.
  4. Live transaction verified
    A real low-value payment taken and refunded together with you.
  5. Handover and support
    Documentation provided, with support after go-live.
FAQ

Questions merchants ask us

Does my store ever store card details?+
No. Card data goes directly to the payment provider through hosted fields or a redirect. Your server receives a token, never a raw card number — which keeps your PCI compliance scope as small as possible.
Can I offer more than one gateway at checkout?+
Yes, and many stores do. Methods can also be shown conditionally by country, currency, or order value, so each customer only sees what's relevant to them.
What if a payment fails halfway through?+
We implement webhook and callback handling, so the provider tells your store the final status directly. Orders resolve correctly even when the customer closes the browser before returning.
Can you integrate a gateway with no OpenCart extension?+
Yes. If the provider publishes API documentation, we build a complete custom integration — admin configuration, refunds, callbacks and all.
Can you fix an integration someone else built?+
Yes. We regularly audit and repair inherited or third-party gateway integrations — failed callbacks, duplicate charges, and orders stuck in the wrong status are the most common issues we're called in for.
Which OpenCart versions do you support?+
OpenCart 1.5.x through 4.x, built with OCMOD or VQMOD so your core files stay untouched and upgrades remain straightforward.

Let's get your payments right

Whether you're adding a gateway or fixing one that misbehaves, start with a free estimate.