OrsunPay

OrsunPay is payment orchestration software from Orsun Tech OÜ, a company based in Estonia. Merchants connect the payment provider accounts they already hold to one OrsunPay API and merchant cabinet, then take payments through hosted checkout, payment links or their own integration. OrsunPay pricing is a platform fee on successful payments, with a plan that has no monthly fee and a lower-rate plan for growing volume.

The problem it addresses is the work of integrating and operating several payment providers separately. Each provider has its own API, statuses and webhooks; OrsunPay puts them behind a common workflow while the providers keep processing and settling funds directly to the merchant under the merchant's own contracts.

Key features

• Provider connections. Add your own credentials for supported providers; the sandbox guide names Stripe, Checkout.com, Adyen, Revolut, Viva, Volt, Brite, Colibrix, Ari10 and BitPay among them.
• Hosted checkout and payment links. Send buyers to a hosted payment page, share a single-use or reusable payment link, or open either from your site with the JavaScript widget, so card entry stays with the provider.
• A documented REST API. OpenAPI reference, decimal-string amounts, idempotency keys, test and live modes selected by the API key, and server SDKs for Node, Go, PHP, Java, .NET, Python, Ruby and Rust.
• Signed webhooks. Payment events are signed with HMAC-SHA256 and come with a delivery journal, retry history and manual resend.
• Merchant cabinet. A shared workspace for payments, provider connections, refunds, reporting and team access, with a separate test mode.

Who it is for

Online stores, digital service businesses, platforms and payment teams that already have, or plan to have, accounts with one or more payment providers and want one integration and one operational view across them. Developers integrating checkout get the API, SDKs and sandbox guide; founders can start with payment links.

Pricing at a glance

• Free: €0 per month, from 2.50% platform fee per successful payment.
• Growth: €49 per month, from 1.5% platform fee per successful payment.
• Enterprise: a platform rate agreed in a volume-based proposal.

There is no fixed per-transaction platform fee, prices exclude VAT, and payment provider fees are charged separately under your own provider agreement. The vendor describes these as proposed launch prices that are confirmed before activation. Prices checked on the vendor's site on 9 November 2026.

Things to consider

• Onboarding goes through the sales team: plans are discussed and activated after scope and eligibility are confirmed, not by self-serve sign-up.
• You need your own contracts with the payment providers you connect; available methods depend on those providers and your market.
• Several products are marked as coming soon, including commerce plugins for WooCommerce, Shopify and other platforms, payouts, donations and event ticketing.
• Automatic cascading and cost-optimisation routing are not part of the core orchestration offering, according to the product page.
• The company also targets high-risk, crypto and iGaming merchants; gambling-related products are discussed separately from the standard plans.

Getting started

Read the OrsunPay documentation and quickstart to see the API flow, then contact the team through the site to agree a plan. Once a merchant account is set up, switch the cabinet to test mode, add a sandbox provider connection, create a test API key and run a test sale before going live.