Payment processing starts simple for many SaaS companies. A basic gateway may be enough when the business has one product, a straightforward subscription model, and a limited number of customers. As the platform grows, however, billing can become much more complicated. Merchant onboarding, recurring payments, failed transactions, multiple currencies, split payments and compliance can all become part of the equation. That is where specialised SaaS payment processing tools become useful. The right platform can help a SaaS business manage recurring billing, support multiple merchants, automate payment workflows and, in some cases, turn payments into an additional source of revenue.
1. Pinch Glassbox
Pinch Glassbox is designed for SaaS platforms and vertical software companies that want greater control over the payment experience without building an entire payment-facilitation infrastructure from scratch. It operates as a PayFac-as-a-Service platform, which makes it especially relevant for software businesses processing payments on behalf of multiple merchants.
One of its main strengths is merchant onboarding. The platform supports digital onboarding with identity verification, compliance checks, and document handling, allowing SaaS businesses to bring merchants into the payment flow without relying heavily on manual processes. It also provides visibility into transaction activity across different levels of the merchant hierarchy.
Glassbox is particularly useful for SaaS businesses that want to control pricing and create revenue from payments. Platforms can configure merchant fees, manage disbursements and track transaction margins. It also supports API access, allowing development teams to build payment workflows directly into their own product.
Best for: Vertical SaaS platforms and software businesses that want embedded payments, merchant onboarding and payment monetisation.
2. Airwallex
Airwallex combines payment processing with broader financial infrastructure, making it useful for SaaS businesses that operate across multiple markets. In addition to accepting payments, the platform supports multi-currency accounts, foreign exchange, payouts and other embedded financial services.
Its Connected Accounts offering allows software platforms to onboard customers and integrate payment capabilities into their own products. This can be useful for SaaS companies that serve merchants in different countries or need to handle multiple currencies within a single payment environment.
Airwallex can also appeal to businesses that expect their financial infrastructure to expand beyond payment acceptance. A SaaS company may eventually need international payouts, foreign exchange or additional financial tools, and having these services available within one ecosystem can reduce the need for multiple providers.
Best for: SaaS companies with international customers, multi-currency needs and broader financial workflows.
3. Braintree
Braintree, owned by PayPal, is a developer-focused payment platform that supports card payments, digital wallets and recurring billing. It is often used by SaaS businesses that want flexibility without moving into a full multi-merchant payment facilitation model.
The platform provides APIs and developer tools that allow businesses to build customised payment experiences directly into their software. It also supports recurring transactions, making it relevant to subscription-based SaaS companies.
Braintree can be a practical middle ground for businesses that need more control than a simple hosted checkout but do not require the merchant onboarding and complex disbursement features of larger platform payment systems.
Best for: SaaS businesses that want flexible card, wallet and recurring payment capabilities.
4. GoCardless
GoCardless focuses primarily on bank payments and recurring collections, which makes it particularly relevant to SaaS businesses with predictable subscription models.
For companies that bill customers monthly or annually, direct debit can reduce the need to repeatedly collect card details and may offer a more stable approach to recurring payments. GoCardless also provides automated payment retries and integrations with accounting software, helping reduce some of the administrative work around failed payments and reconciliation.
Its narrower focus can be an advantage for businesses that do not need a large range of payment methods. SaaS companies with straightforward recurring billing may prefer a specialised tool rather than a larger payment platform with features they are unlikely to use.
Best for: Subscription-based SaaS companies that rely heavily on recurring bank payments.
5. Stripe Connect
Stripe Connect is designed for platforms, marketplaces and software companies that need to move money between multiple parties. It allows SaaS businesses to onboard sellers or service providers, collect payments and distribute funds through one infrastructure.
One of its biggest strengths is flexibility. Stripe offers extensive APIs, international payment support and a wide range of developer tools, making it suitable for SaaS companies that want to build highly customised payment workflows.
That flexibility can also mean more implementation work. Businesses with complex merchant structures or advanced payment logic may need strong technical resources to get the most from the platform. For developer-led SaaS companies, however, that level of control can be a major advantage.
Best for: Developer-focused SaaS platforms and marketplaces with complex or international payment flows.
6. Paddle
Paddle takes a different approach by operating as a Merchant of Record for software and SaaS businesses. Instead of simply processing payments, it can handle responsibilities such as payments, billing, tax collection and compliance on behalf of the seller.
This can be especially useful for SaaS companies selling internationally. Managing VAT, sales tax and other regional requirements can become increasingly complicated as a business enters new markets, and the Merchant of Record model shifts much of that operational burden away from the software company.
Paddle is particularly attractive to SaaS businesses that want to focus on product development and growth rather than building their own global billing and tax infrastructure.
Best for: SaaS companies selling internationally that want billing, payments and tax compliance handled through a Merchant of Record.
7. Checkout.com
Checkout.com is a global payment service provider focused on businesses with significant transaction volumes and international ambitions. It supports card payments, local payment methods and multi-currency processing across a wide range of markets.
For SaaS companies, one of its main attractions is the ability to support expansion into multiple regions while maintaining a centralised payment infrastructure. Businesses can also access detailed payment data and optimisation tools that may help improve authorisation rates and payment performance.
Checkout.com is generally more suitable for established SaaS businesses than very early-stage companies. Its infrastructure is built for businesses that need scale, international reach and more control over payment performance.
Best for: Growing or enterprise SaaS companies with high transaction volumes and international payment requirements.
Choosing the Right SaaS Payment Processing Tool
The best payment platform depends on how money moves through the business. A SaaS company charging a simple monthly subscription has very different requirements from a vertical SaaS platform that processes payments for hundreds of merchants.
Businesses should consider recurring billing, merchant onboarding, supported currencies, payment methods, API flexibility, compliance responsibilities and the potential to monetise transaction volume. International businesses may place greater importance on multi-currency support and tax handling, while vertical SaaS platforms may care more about sub-merchant onboarding and control over fee structures.
The right payment system should make the business model easier to operate, not more complicated. For some SaaS companies, that means reliable recurring billing. For others, payments can become part of the product itself and even develop into a separate revenue stream. The key is choosing infrastructure that matches the way the business works today while still leaving room for future growth.
