Crypto + fiat · build partner
topropay is the platform that crypto payment gateway development teams build on top of — a managed PayFac-style orchestration layer with PCI DSS Level 1 vault, smart routing across acquirers, licensed partner crypto gateways for stablecoins and majors, and one reconciliation feed across both surfaces.
Key benefits
Four reasons the build-on-topropay route ships faster than a parallel licence, certification and acquirer-relationship programme.
topropay operates as a managed PayFac company — the heavy regulated machinery (PCI L1 service-provider posture, scheme membership through partner acquirers, vault tokenisation, AML / sanctions screening) is already audited and live. You inherit it through sub-merchant onboarding rather than rebuilding it inside your own gateway build.
Cryptocurrency payment gateway development on the platform isn't a crypto-only silo. Stablecoins, majors and L2 networks ride the same authorise / capture / refund contract as card, ACH, SEPA and wallet, so the gateway you ship handles both surfaces from day one.
Custom payment gateway development on topropay keeps the merchant relationship, the pricing, the branding and the support model under your name. The platform sits behind the scenes — your gateway, your contracts, your dashboard skin, our infrastructure.
Payment gateway development cost on a from-scratch build is dominated by compliance, scheme certification and acquirer relationships — easily 18-30 months and seven-figure spend. Building on topropay collapses that into a configuration / integration project measured in weeks, not years.
How it works
Five stages from a scoped build sheet to production traffic. Each stage has explicit output and a sign-off gate — no open-ended timeline.
Map the markets you'll serve, the methods (crypto + fiat) you need active, the merchant verticals you'll onboard, and the compliance posture per region. Output is a build sheet with connectors, routing policy and onboarding flow defined.
Connectors (acquirers, PSPs, crypto partner gateways) are switched on in your tenant; routing rules and cascade ladders are configured per BIN / currency / vertical; vault and branding tokens are set up; sub-merchant onboarding KYB / KYC flow is wired.
Web development payment processing work happens against a full sandbox. SDKs cover web, mobile and server; hosted-page, hosted-fields and SDK integration shapes are all available; webhooks are signed and replay-safe; reconciliation feeds run in parallel from day one.
Scheme certification for new acquirer pairs, partner-gateway onboarding for crypto rails, and an end-to-end UAT covering authorise, capture, partial refund, recurring, dispute and reconciliation flows. Sign-off is the gate to production.
Pilot traffic on one corridor first, then ramp by merchant cohort. Production telemetry, dispute queue and reconciliation feed mirror the sandbox — no surprises post-launch.
Main use cases
Six recurring shapes the build-on-topropay route fits — PSPs, marketplaces, fintechs, vertical SaaS, crypto-natives and enterprise migrations.
A regional PSP launches a branded crypto-and-fiat gateway under their own name; topropay sits behind the surface. Their merchants see one gateway; the PSP keeps the relationship, branding and pricing.
Existing fiat marketplace adds stablecoin payouts and crypto-funded payment-in for crypto-native buyers — wired through the same API the marketplace already uses for card and SEPA.
Own payment gateway development on top of topropay lets a neo-fintech ship a branded gateway product to their SME merchants without building scheme, PCI and crypto stacks in-house.
A vertical SaaS (legal-tech, travel, ticketing) productises payments for their customer base — crypto + fiat acceptance under the SaaS brand, with topropay handling the orchestration and reconciliation.
Crypto-first merchant adds card, wallet and SEPA payment-in alongside its existing on-chain flows — one ledger across crypto and fiat, no separate finance reconciliation.
An enterprise that built an in-house gateway a decade ago migrates onto topropay rather than re-investing in scheme certification, PCI compliance and crypto integration in parallel.
Service catalogue
What an engagement actually covers — the six service blocks delivered as part of a standard build on topropay.
Build vs buy
Seven dimensions where the from-zero route and the build-on-topropay route diverge — time, certifications, posture, relationships, headcount and cost shape.
Platform features
The dozen primitives every gateway needs — orchestration, vault, routing, tokenisation, dispute and reconciliation. Configurable per tenant; not a parallel codebase to maintain.
One REST contract; SDKs for web, mobile and server; hosted-page, hosted-fields and low-level SDK integration shapes.
KYB / KYC, sanctions screening, ongoing AML monitoring — merchants onboarded in days, not weeks of MID applications.
Stablecoins, majors and L2 networks delivered through licensed partner gateways with VASP / MiCA-relevant authorisations.
60+ connected acquirers and PSPs across EU, UK, APAC and LATAM; new connectors added without changing your integration.
Per-transaction scoring with ranked provider lists; configurable per BIN, currency, country pair and merchant vertical.
Soft declines cascade to the next ranked provider inside the same authorisation; recurring retries are NSF / R-code aware.
Card data captures into the platform vault before touching any provider; tokens drive refunds, retries and recurring.
Network tokens by default; scheme account updaters keep saved cards alive across re-issuance.
Selective challenges per authorisation — PSD2-compliant in Europe without breaking conversion.
One queue across providers; evidence-pack templates per vertical; automated representment for select scheme types.
Dashboard, hosted page and email templates skinnable per tenant; brand tokens are configuration, not a code fork.
Crypto and fiat receipts normalised into one ledger; daily exports tagged by provider, vertical and merchant.
Industry relevance
Existing PSPs and ISOs add crypto rails without a parallel partner-gateway integration project; existing fiat connectivity stays on topropay's connected panel. The gateway they ship is branded, but the regulated stack underneath is shared and managed.
Neobanks and embedded-finance fintechs productise payments for their SMB / SME merchant base. The managed PayFac model lets them onboard merchants in days rather than re-running MID applications per merchant — and crypto is a first-class surface, not an after-thought.
Vertical SaaS (travel, ticketing, legal-tech) and marketplaces fold payments into the product without staffing a payments engineering team. Crypto-native marketplaces add fiat payment-in alongside their existing on-chain payouts; fiat-first marketplaces add crypto payouts and crypto payment-in for crypto-native buyers.
Trust & compliance
One audited environment underpins every tenant. Gateways built on topropay inherit the posture rather than carrying separate programmes themselves.
Ready to scope
A 30-minute scoping call covers the markets you'll serve, the methods you need active, the merchant verticals you'll onboard, and a delivery timeline against the standard five-stage roadmap. Sandbox access at the end of the call — no commercial commitment to start integrating.
Frequently asked
Questions buyers ask before scoping a build — model, services, cost, PayFac shape, web-development integration and which merchant verticals are in scope.
Topropay functions as a crypto payment gateway development company in the sense that you build a branded gateway on top of the platform rather than contracting bespoke development from zero. Branding, contracts, pricing and merchant support stay on your side; the regulated machinery (PCI L1 service-provider posture, scheme connectivity via partner acquirers, licensed partner crypto gateways, vault, AML / sanctions) is provided by the platform.
Cryptocurrency payment gateway development on topropay is a configuration / integration project, not a regulated-infrastructure project. The licences, scheme certifications, PCI Level 1 audit and crypto-rail KYC are all in place via the platform and its licensed partners; your team focuses on the branded surface, merchant onboarding shape and routing policy rather than building those layers in parallel.
Both shapes fit. As a cryptocurrency payment gateway development company framing, topropay's solution-architecture and integration team scope your build, configure connectors and route the project through certification with you. As a SaaS framing, the same platform is what powers it — there's no parallel custom codebase to maintain afterwards.
Payment gateway development services on topropay cover platform tenant setup, connector activation (acquirers, PSPs, partner crypto gateways), routing and cascade rule configuration, sub-merchant onboarding flow design, branded surface skinning, SDK / API integration support, certification with new acquirers, UAT and launch ramp. Ongoing managed-services options cover operations, dispute handling and reconciliation support.
Yes — that's the default shape. Payment gateway development on topropay typically covers both surfaces in one project because they sit on the same unified API. Splitting them into separate builds duplicates onboarding, reconciliation and dashboard work for no functional gain.
PayFac as a service means topropay operates the payment-facilitator stack — sub-merchant onboarding, MID-less acceptance, scheme programme handling, settlement consolidation — and you (the gateway operator) sit on top as a PayFac-style brand. Merchants onboard with you, transact through your gateway, and the regulated PayFac obligations are carried by the platform.
The PayFac model collapses per-merchant MID applications into platform-side sub-merchant onboarding. Time-to-live for a merchant drops from weeks to days; scheme programme exposure is pooled at the platform layer; settlement consolidation happens on the platform side. Direct MIDs still make sense for very high-volume merchants and are also supported on topropay.
Topropay operates as a payfac company in the sense that it provides the payment-facilitator infrastructure to its merchants and to gateway operators built on top of it. Sub-merchant onboarding, sanctions screening, vault and reconciliation are all platform-side; the licence stack is held through the platform's regulated entities and partners.
Managed payfac means the operational burden of running a PayFac — onboarding queue, sanctions hits, scheme programme position management, dispute handling — is provided as a service rather than being a problem your team builds and staffs from scratch. You decide the merchant verticals and pricing; the platform runs the day-to-day machinery.
Payment gateway development cost on a build-from-zero project typically runs into the millions over 18-30 months, dominated by licensing, scheme certification, PCI Level 1 programme and team build-out. Building on topropay collapses the up-front cost into an integration project (weeks of engineering, plus configuration) and a transaction-side commercial — predictable rather than CAPEX-heavy. Exact numbers depend on scope and are quoted per project.
Yes. Custom payment gateway development sits in three layers: branded hosted-page CSS, embedded hosted-fields rendered inside your own checkout, and low-level SDK for bespoke surfaces. Routing rules, sub-merchant flows and reconciliation reports are all configurable per tenant, so the gateway you ship reflects your product decisions, not a generic template.
A generic payment gateway development company builds a software gateway and then leaves the regulated layers (PCI, scheme cert, acquirer relationships, partner crypto KYC) for the operator to source separately. Topropay packages the regulated layers as the platform itself, so the development work is the branded surface and routing policy rather than a parallel licence and certification programme.
Yes. Web development payment processing on the platform covers hosted-page checkout, embedded hosted-field forms, full SDK integration, and headless / API-only flows. SDKs cover web, mobile and server; the same surface drives both your in-house product and any merchant-facing surface you white-label.
Own payment gateway development on topropay ships a branded gateway: your domain, your dashboard skin, your hosted-page brand, your merchant contracts and pricing — backed by the platform's orchestration, vault, routing and reconciliation. The merchant-facing experience is yours; the regulated infrastructure is the platform's.
Mainstream verticals (DTC, SaaS, marketplaces, travel, ticketing, B2B) plus licensed high-risk verticals (regulated gaming, regulated financial services, where local licences exist). Grey and black-market verticals are out of scope across the platform; that boundary applies to every gateway built on top of it, regardless of branding.
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