Universal payment system

A universal payment system — every region, every rail, one SDK.

topropay puts USA, UK, Germany, Japan, LATAM and APAC payment gateways behind one REST API. Cards, bank transfer rails, local methods and crypto through the same payment gateway sdk — with smart routing, signed webhooks and one reconciliation feed across every region you operate in.

Book a regions review Explore the platform
topropay · regions live
  • US United States Live
  • GB United Kingdom Live
  • DE Germany Live
  • JP Japan Partner
  • BR Brazil Live
  • MX Mexico Live
+ JP · IN · NG (partner-licensed)
40+
regional gateways connected
300+
methods through one SDK
REST
JSON-over-HTTPS API
Sandbox
dummy-gateway parity for testing

Key benefits

What changes when every regional payment gateway sits on one platform

Four outcomes that show up consistently once a universal payment system sits in front of the regional gateway map instead of a separate console per country.

  1. Reach

    Every regional payment gateway behind one integration

    Whether the merchant needs a USA payment gateway, a high risk payment gateway uk shape, payment gateway germany rails or payment gateway japan connectivity — they're all toggles on the same contract. The merchant doesn't integrate against each gateway separately.

  2. Local

    Local payment gateway behaviour where it matters

    Each region brings methods that don't travel — Giropay in DE, PIX in BR, JCB-first checkout in JP, BLIK in PL. The platform surfaces them as local payment gateway connections under the unified API, configured per market on the dashboard.

  3. Rails

    Cards, bank transfer, crypto — every rail on the same SDK

    Bank transfer payment gateway flows (SEPA, Bacs, Open Banking, ACH, PIX), card acquirer routing, crypto payment gateway for business via licensed partner gateways — every rail speaks the same authorise / capture / refund verbs on the same SDK.

  4. Operations

    One ledger across every region and rail

    Settlements, fees, refunds and chargebacks across every regional gateway and rail normalise into one ledger keyed off vault tokens. Finance closes the month from one export rather than a stack of per-region reconciliation files.

Regional coverage

USA, UK, Germany, Japan and the rest of the regional gateway map

A condensed view of regional gateway coverage. The full matrix per market — including per-acquirer status — is exposed in the merchant dashboard with live availability.

Region Method shape Status
USUnited States Card acquiring, ACH, wallets Live
GBUnited Kingdom Cards, Bacs, Open Banking, FCA-licensed connectivity Live
DEGermany Cards, SEPA Direct Debit, Giropay, EPS, SOFORT Live
JPJapan Cards (JCB, Visa, MC), konbini-style flows via partner gateway Partner
BRBrazil Cards, PIX, Boleto Live
MXMexico Cards, OXXO, SPEI Live
AUAustralia Cards, PayID, OSKO, BPAY Live
INIndia Cards, UPI, RuPay via licensed partner gateways Partner
NGNigeria Cards (Verve, Visa, MC), USSD, bank transfer Partner

Live means direct platform connectivity with the underlying acquirer panel. Partner means connectivity via a licensed partner gateway with its own regional authorisation — the integration shape on the merchant side is identical.

How it works

From discovery to a multi-region production setup

Five concrete stages between mapping the regional needs and a live universal-payment-system setup. Engineering integrates the API once; operations tunes the regional set afterwards.

  1. 01

    Discover the regions and rails you need

    Quick mapping of where buyers come from and what they pay with today. The output is a concrete set of regional gateways to enable and rails to route — not a generic 'switch on everything' list.

  2. 02

    Configure regions and method mix

    Each region is a configuration toggle on the contract. USA, UK, Germany, Japan, LATAM, APAC — turn on what fits; the dashboard surfaces the live status per region and per method.

  3. 03

    Integrate against the payment gateway interface once

    One REST surface, one SDK family (Node, Python, PHP, Ruby, Java, Go, .NET), one signed-webhook event stream. The payment gateway interface stays consistent across every region you enable.

  4. 04

    Test against the sandbox

    A dummy payment gateway sandbox mirrors production — same endpoints, same error model, deterministic helpers for triggering specific decline reasons, 3DS / SCA challenges, bank-rail confirmation outcomes and webhook replays.

  5. 05

    Go live region by region

    Production roll-out is region-by-region from the dashboard; the routing engine scores every authorisation against your own traffic from day one. Reconciliation rolls into the unified ledger across regions.

Main use cases

Where payment gateway solutions for ecommerce business earn their keep

Six merchant shapes that share the same universal-payment-system integration but stress the regional and rail mix differently.

  • Global retail

    Cross-border DTC and online retail

    Brands selling into multiple countries enable per-region gateways without per-region integrations. The same payment gateway sdk powers every market; local methods surface per shopper's market on the same checkout.

  • SaaS

    SaaS with international subscribers

    Recurring billing on cards in the US and UK, SEPA Direct Debit in Germany, JCB-friendly card flows in Japan — one renewal engine across all of them, vault-token-driven, with network tokens and account updaters wired in.

  • Marketplaces

    Marketplaces with sellers in many countries

    Per-seller payouts in the seller's local currency, buyer-side payment methods per market, split-payment routing through one orchestration. The marketplace doesn't integrate per country.

  • B2B

    B2B trade with international counterparties

    Invoices paid via card, bank transfer or (where treasury wants it) stablecoins — one record per invoice across rails, with FX surfacing in the reconciliation export.

  • PSP

    PSPs and ISVs reselling regional capacity

    Resellers inherit the platform's regional gateway portfolio and route their merchants through it. The PSP gets a universal SDK for its customer base; the back-end orchestration is shared.

  • Travel

    Travel and ticketing across regions

    Staged captures and multi-currency settlement combined with regional gateway routing — a booking with deposit in one region and balance in another reconciles as one record.

Platform features

Capabilities behind the universal payment gateway interface and SDK

What the platform actually ships across regions and rails — the API contract, the SDK family, the routing engine and the back-end primitives.

  • Universal payment gateway interface

    JSON-over-HTTPS REST with idempotency, signed webhooks and OpenAPI specs; consistent across every region.

  • Payment gateway sdk family

    Server SDKs for Node, Python, PHP, Ruby, Java, Go and .NET; mobile SDKs for iOS and Android; consistent verbs across all of them.

  • Smart routing engine

    Per-transaction scoring on BIN, scheme, currency, country pair and risk — ranked routes per authorisation across regional gateways.

  • Cascade & retry

    Soft declines cascade to the next ranked acquirer inside the same authorisation; retry-engine for renewal traffic.

  • Bank transfer payment gateway support

    SEPA Direct Debit, Bacs, Open Banking (UK / EU), ACH (US), PIX (BR), PayID / OSKO (AU) — all on the same API.

  • Coin payment gateway via partners

    Crypto payment gateway for business through licensed partner gateways — stablecoins, majors and L2 networks under the same SDK.

  • PCI DSS Level 1 vault

    Card data captures into our vault; refunds, retries and recurring run on vault tokens.

  • 3DS2 / SCA orchestration

    Selective challenges per transaction; PSD2-compliant in Europe without breaking conversion in other regions.

  • Unified reconciliation

    Settlements, fees, refunds and chargebacks across every regional gateway normalised into one ledger.

  • Operator portal

    One dashboard for authorisations, refunds, disputes and chargebacks across every region and rail.

  • Sandbox parity

    Dummy payment gateway sandbox mirrors production behaviour — routing, cascade, regional outcomes, webhook replays.

  • Audit log

    Operator actions, cancel events and refund events logged with actor identity, reason code and timestamp.

Trust & compliance

Compliance posture across the universal payment system

One audited environment underpins every region. Merchants inherit the platform's posture rather than carrying separate certifications per region or per rail.

PCI DSS Level 1
Annual on-site assessment plus quarterly ASV scans; sub-merchants inherit the posture across every regional gateway.
Regional regulatory shape
PSD2 / SCA in Europe, FCA-licensed connectivity in the UK, MAS-aligned routes in Singapore where applicable, RBI-licensed partner gateways for India, JP-side licensed partner gateways for Japan.
Sanctions & AML alignment
Sanctions screening on onboarding; AML monitoring tuned per vertical, volume and regional mix.
Scheme programme tracking
Visa VDMP/VAMP and Mastercard ECP/EFMP thresholds tracked across the connected acquirer panel.
Signed webhooks
HMAC-signed, replay-safe events into your SIEM, warehouse or in-house tooling.
Licensed verticals only
Licensed gaming, regulated financial services and other compliance-bound verticals supported only where current operating licences exist. Grey and black-market verticals are out of scope regardless of region.

Ready to go universal

Turn on the regions you sell into. One SDK does the rest.

A 30-minute regions review walks through the gateways relevant for your markets, the routing policies that fit, and a sandbox to test against before any commercial commitment.

Book a regions review Read the API docs

Frequently asked

Buyer questions about the universal payment system

Questions buyers ask before committing — regional specifics (USA, UK, DE, JP), interface and SDK shape, sandbox testing, and how the catalogue fits in.

  1. 01

    What does 'universal payment system' actually mean on topropay?

    Universal payment system on topropay is the umbrella for one integration across every regional gateway, every rail and every method the platform connects to. The merchant integrates against one API and turns regions and methods on per market — the platform absorbs the per-region complexity behind the scenes.

  2. 02

    Is there a usa payment gateway list exposed inside the platform?

    The connected usa payment gateway list is exposed inside the merchant dashboard, scoped to the merchant's vertical and contract. We avoid publishing a public marketing list because the appetite of each acquirer changes by quarter — the dashboard shows the live state with per-acquirer approval, cost and dispute analytics for the merchant's own US traffic.

  3. 03

    How does the platform handle a high risk payment gateway uk setup?

    High risk payment gateway uk flows run through the connected UK acquirer panel filtered to the merchant's vertical. The routing engine treats it as a high-risk segment with chargeback-aware policies, FCA-licensed connectivity and operator-specific risk thresholds layered on top.

  4. 04

    What does payment gateway germany support look like?

    Payment gateway germany support includes card acquiring through EU-licensed acquirers, SEPA Direct Debit for recurring debits, plus regional methods (Giropay, EPS, SOFORT where supported by the connected partner gateway). PSD2 / SCA wired into card authorisations by default.

  5. 05

    Is payment gateway japan connectivity available through topropay?

    Payment gateway japan connectivity is available via licensed partner gateways — JCB-first card acquiring, convenience-store payment flows (konbini-style) and bank-rail debits. Settlement in JPY where the merchant configures it, with the routing engine treating JP traffic as its own region.

  6. 06

    How does the platform handle the broader japan payment system context?

    Japan payment system specifics — JCB scheme dominance, convenience-store payment patterns, FX surcharge expectations — are abstracted away by the platform's regional configuration. The merchant doesn't need to encode JP-specific logic in their codebase; routing and method ordering happen on the platform side.

  7. 07

    What's a local payment gateway in topropay terms?

    A local payment gateway in topropay terms is any connected gateway licensed to operate in a specific region — versus a global card acquirer that covers many regions. Local payment gateways often deliver region-specific methods (PIX, BLIK, iDEAL, OXXO, PayID, JCB) that a global acquirer wouldn't expose by default.

  8. 08

    What is the payment gateway interface — REST, GraphQL or something else?

    The payment gateway interface is JSON-over-HTTPS REST with idempotency keys on mutation endpoints, signed webhooks for events, and OpenAPI specs powering the SDK family. No GraphQL or SOAP; the boring-but-stable REST approach is deliberate — it's what makes a payment gateway sdk feel predictable across languages.

  9. 09

    Which payment gateway sdk targets are supported?

    Payment gateway sdk targets include Node, Python, PHP, Ruby, Java, Go and .NET on the server side, plus iOS and Android on the mobile side. The REST API is the source of truth; SDKs are idiomatic wrappers with response types, webhook signature verification and retry / idempotency helpers.

  10. 10

    How does topropay compare to a competitor like upay payment gateway?

    Providers like upay payment gateway are typically direct-acquirer products focused on a specific region or vertical. topropay sits one layer above — it integrates with multiple acquirers and gateways (a merchant could keep an upay-style relationship and still route additional volume through topropay's connected portfolio). The two models are complementary, not exclusive.

  11. 11

    Is there a dummy payment gateway for testing?

    Yes — the sandbox is a dummy payment gateway in the testing sense. Endpoints are identical to production, error model is identical, but transactions don't move real money. Deterministic helpers trigger specific decline reasons, 3DS challenges, regional bank-confirmation outcomes and webhook retries.

  12. 12

    How does the bank transfer payment gateway side work?

    Bank transfer payment gateway flows run through region-specific rails — SEPA Direct Debit in the EU, Bacs in the UK, ACH in the US, PIX in Brazil, PayID / OSKO in Australia. All of them speak the same authorise / capture / refund verbs on the same API; mandate evidence and per-rail R-code-equivalent retry calendars sit on the rail-specific metadata.

  13. 13

    Can I run crypto payment gateway for business through the same SDK?

    Yes — crypto payment gateway for business runs through the same SDK, with crypto rails delivered by licensed partner gateways. The merchant calls the same /v1/payments endpoint with a crypto method value; conversion-on-receipt policies keep treasury fiat-only when the merchant prefers it.

  14. 14

    Is there coin payment gateway connectivity for stablecoin payouts?

    Coin payment gateway flows — stablecoin payouts to suppliers or sellers — run through the same orchestration layer as fiat payouts. Per-asset policies cover conversion windows, supported chains and the AML controls the underlying partner gateway runs.

  15. 15

    What payment gateway solutions for ecommerce business does the platform fit best?

    Payment gateway solutions for ecommerce business that match the platform: international merchants with more than one region, multi-method buyer bases, recurring or marketplace flows, and any merchant wanting to swap individual-acquirer integrations for a single orchestration layer. Single-region single-method merchants often do fine with a direct gateway and don't need orchestration.

Related

Related on the topropay platform