Payment integration cost calculator 2026

Choose the right service for what you want to build

If the calculator range makes sense, the next step is to review the landing page for your project type. Each one explains scope, deliverables, common integrations and when we are the right fit.

How to use this calculator (and what it doesn't replace)

1. Pick the setup (one-off checkout, subscriptions, or marketplace payouts).
2. Set the complexity based on webhooks, currencies and providers.
3. Adjust the timeline in months — very short timelines cost more due to parallelization.
4. Send the estimate to get a detailed quote with real scope and risks.

Useful for: checkout & billing, SaaS & web, and mobile apps. It doesn't replace a proposal with scope, milestones and risks — see how we work at RoviDev.

What drives payment integration cost (and why estimates vary)

A reliable payment integration cost estimate isn't a flat number — it's a range that depends on a handful of dominant factors. This calculator returns a fast indicative range; below is what actually moves the number when we turn it into a real quote:

• Recurring billing: subscriptions need plan management, proration, retries and dunning logic for failed payments.
• Multi-currency / multi-provider: supporting several currencies or combining Stripe with a local processor like Redsys adds real integration work.
• Marketplace payouts: splitting a payment between your platform and third-party sellers requires compliant payout flows (e.g. Stripe Connect).
• Refunds & chargebacks: handling disputes and partial refunds correctly touches both the payment logic and your order/accounting data.
• Compliance scope: staying out of full PCI DSS scope (by using hosted fields/checkout) is usually cheaper than building custom card forms.
• Reconciliation: matching payments to invoices or syncing with accounting/ERP software is often the most underestimated part.

If you want a calculator output stress-tested against a real brief, send us the form output and we return a one-page assessment with phases, dependencies and risks — usually in under 30 minutes.

FAQ — Payment integration cost estimate

How much does it cost to integrate Stripe or another gateway? A simple one-off checkout with a single provider can start around €2.5k-€4.5k. Adding subscriptions or webhooks for reconciliation typically runs €6k-€12k. Marketplace-style split payments or multi-provider setups often exceed €18k.

Do I need Stripe, Redsys or Bizum specifically? Stripe is the most developer-friendly option internationally. Redsys is common for Spanish banks' own checkout. Bizum is a Spain-specific instant payment method often added alongside a card processor.

Is the calculator estimate binding? No. It's a quick reference with typical ±30% variation. A formal quote includes provider choice, webhook logic and compliance requirements.

What pushes cost up the most? Recurring billing and dunning, multi-currency support, marketplace payouts, refund/chargeback handling, PCI scope and reconciliation with accounting systems.