Payment & Billing Integration
Stripe, Subscriptions, Metered Billing, and Reconciliation Done Right
The Money Side, Built So It Just Works
Billing is the one part of an application where a bug costs you cash and trust at the same time. A double charge, a webhook that silently failed, a subscription that no longer matches what the customer can access: each one is a refund request, a support ticket, and a dent in your reputation. We build payment and billing integration the careful way, so the numbers reconcile and the system can be trusted.
Stripe, Done Properly
The checkout button is the easy part. The real work is everything around it: webhook handling that survives retries and out-of-order events, idempotency so nobody is ever double-charged, and reconciliation that keeps your database and Stripe in agreement. We use hosted payment elements and tokens so card data never touches your servers, which keeps your PCI scope small, and we keep every API key in a secrets manager rather than the code.
Subscriptions and Usage-Based Billing
- Subscriptions - flat and tiered plans, trials, proration, mid-cycle upgrades and downgrades
- Metered billing - pay-as-you-go pricing tied to actual usage, tracked accurately
- Prepaid credits - balances that draw down with use, the model we built for a credit-metered AI product
- Dunning and recovery - failed-payment retries and flows that recover revenue instead of losing it silently
Beyond Cards: On-Chain Payments
When the requirement is crypto settlement, we have built it for real: a non-custodial Solana payment gateway with on-chain atomic fee splitting, so funds and fees route correctly in a single transaction without holding customer money. Most businesses want Stripe, but if on-chain payment is genuinely part of your model, it is not new ground for us. See also our blockchain development work.
Fixing Billing That Is Already Live
A lot of this work is repair: duplicate charges, webhooks that fail quietly, subscriptions out of sync with access, revenue that will not reconcile. We trace where state diverges between your app and the processor, make it correct, and make it observable so the numbers are trustworthy again. It pairs naturally with e-commerce builds and with identity verification where a payment flow also needs to confirm who the customer is.
Frequently Asked Questions
What payment platforms do you integrate?
Stripe is the default for cards, subscriptions, and metered billing, and it covers most businesses well. We also build with other processors when there is a reason, and we have implemented non-custodial on-chain payments (a Solana payment gateway with atomic fee splitting) when crypto settlement was the requirement. The right processor depends on your customers, your margins, and your compliance picture.
Can you build subscription and usage-based billing?
Yes. Flat subscriptions, tiered plans, metered (pay-as-you-go) billing, prepaid credits that draw down with use, free trials, proration, and upgrades or downgrades mid-cycle. We have built credit-metered billing for an AI product where every action consumed metered credits, so the usage-tracking and reconciliation side is well-trodden ground for us.
Why not just paste in the Stripe snippet myself?
The checkout button is the easy 20%. The other 80% is what breaks quietly: webhook handling that survives retries and out-of-order events, idempotency so a customer is never double-charged, reconciliation between your database and the processor, failed-payment and dunning flows, refunds, and tax. Getting those wrong costs real money and trust. That is the part we build correctly.
Is it secure and compliant?
We keep card data off your servers entirely by using the processor’s hosted elements and tokens, which keeps your PCI scope minimal. Secrets and API keys live in a secrets manager, never in the code. For regulated flows that need identity checks alongside payment, we pair this with our identity verification work.
Can you fix billing that is already live but buggy?
Yes, and it is a common ask: duplicate charges, webhooks that silently fail, subscriptions out of sync with access, or revenue that does not reconcile. We audit the flow, find where state diverges between your app and the processor, and make it correct and observable so you can trust the numbers.
Need Billing You Can Trust?
Whether you are adding payments for the first time or fixing a flow that is already losing money, tell us what you are selling and how. We will map the billing model and build the part that has to be exactly right.