SaaS payment gateway, embedded checkout and subscription billing APIs

Operational workflows

Payment challenges

• Keep seats collecting at renewal

  A seat renews whether or not the customer ever opens the app. RapidCents refreshes stored cards so a paying account stays current through expiry and reissue.

• Plan changes mid-cycle

  Upgrades, downgrades and seat counts change between renewals and each one has to prorate against an amount already charged.

• Collecting money you never own

  A platform taking payments on behalf of its own merchants has to route each payout to the right sub-merchant while keeping the fee it earned.

Choose the right payment setup for Software & SaaS

• Choose SaaS payment gateway

  For Software & SaaS, map sign-up, scheduled billing, and renewal, online checkout and remote payment, and the sale and reconciliation with business systems before choosing a setup. Select channels that match those moments, then confirm that the chosen solution genuinely covers each channel.

• Payment hardware for Software & SaaS

  For Software & SaaS, physical hardware may be secondary to the checkout flow. Prioritize gateway or payment-page requirements first, then add a terminal only when an in-person payment point is genuinely needed.

• Compare payment processing fees

  For Software & SaaS, request a written fee breakdown covering scheduled billing, declined cards, and cancellations and online checkout and dispute handling. Compare the effective cost across the real card and channel mix; do not choose on a headline rate alone.

• Set up or switch Software & SaaS payments

  To set up Software & SaaS payments, document how payment data moves into business systems and the checkout, confirmation, and refund path, confirm compatibility before purchase, then test a real payment flow before going live.

How this gets set up

• Sandbox first

  Your engineers build against the gateway sandbox and fire test webhooks until renewals, refunds and declines all behave, before a single live key is issued.

• Checkout inside the product

  Embedded payments put the card form on your own pricing page, so an upgrade never bounces the user to a third-party domain mid-signup.

• Billing that survives renewal

  Recurring payments hold the tokenized card and the account updater replaces it when the issuer reissues, so a plan does not lapse over an expiry date.

• Splitting platform revenue

  Platform payments settle each sub-merchant on your platform and retain your share, with webhooks driving the reconciliation on your side.

Integrations

• Stripe migration paths

  A migration path moves your existing subscriptions and stored-card tokens across once; it is a transfer, not a live sync between two gateways.

• Chargebee

  Chargebee keeps owning the plan catalogue and the proration while RapidCents is the gateway that actually charges the card on each renewal.

• Recurly

  Recurly's dunning schedule triggers the retry and RapidCents reports whether the card approved, so failed-payment churn is worked in one place.

Operations, security and going live

• Reporting your finance team can close a month on

  Settlement reports tie each deposit to the subscription invoices and platform splits behind it, so recurring revenue in your database and money in the bank reconcile line by line.

• Cards you never store

  Tokenization and the card vault keep the card number out of your application database, which keeps your own codebase out of the heaviest part of PCI scope.

• A missed webhook is an outage

  Retried webhooks and the merchant dashboard give you a second source of truth for the renewal run that happened while your listener was down.

• Go-live without a big-bang cutover

  Sandbox keys promote to production, and new signups can run on RapidCents while subscriptions on the previous gateway finish out.

For businesses in the USA

A direct answer for a business in the USA: the workflow, the limit, and what to confirm next.

• The payment workflow

  Trace a US customer from subscription signup to seat changes, renewal and cancellation. Distinguish charging for the software itself from onboarding sellers and collecting payments on their behalf. Confirm eligibility, presentment currency, settlement currency and the enabled payment methods on the USA merchant account before quoting them. An illustrative amount is an example, not a fee or a funding promise. Software and SaaS does not, by itself, prove delivery or win a dispute.

• The problem and the limit

  Specify authoritative payment events, safe retries and the treatment of failed renewals or prorated changes. Keep service entitlement separate from a browser redirect and require evidence for automated revenue recovery. Confirm eligibility, presentment currency, settlement currency and the enabled payment methods on the USA merchant account before quoting them. An illustrative amount is an example, not a fee or a funding promise. Software and SaaS does not, by itself, prove delivery or win a dispute.

• What to confirm

  Ask for tested sandbox examples for signup, upgrade, duplicate request and cancellation. Before you rely on this, confirm US SDK versions, proration, token scope, webhook verification, currency support and platform underwriting when sellers are involved. Confirm eligibility, presentment currency, settlement currency and the enabled payment methods on the USA merchant account before quoting them. An illustrative amount is an example, not a fee or a funding promise. Software and SaaS does not, by itself, prove delivery or win a dispute.

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