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Solutions/Build A/Saas
Build A · Web Application

Build a subscription billing system — custom billing logic that Stripe handles.

Stripe Billing handles subscriptions, but the customer-facing experience — upgrade/downgrade, plan management, usage-based billing displays, and invoicing — needs to be built. A custom billing system gives your customers the billing experience your product deserves.

150+
Projects shipped
99%
Client retention
~12wk
Average delivery
The problem
SaaS founder or subscription business owner who needs custom billing logic, customer-facing plan management, and subscription lifecycle automation beyond what a generic billing tool provides

Stripe Billing is the backend. The customer-facing billing experience is what you build on top of it.

What Stripe Billing provides: Subscription lifecycle management, payment method storage, invoice generation, retry logic for failed payments, tax calculation.

What Stripe Billing doesn't provide: The customer portal with your branding. The upgrade/downgrade flow that shows the plan comparison and prorates correctly. The usage display for usage-based pricing. The invoice list that your customers can download. The dunning email sequence for failed payments with your brand voice.

Complex billing scenarios that need custom logic:

  • Usage-based billing (seats, API calls, storage) with monthly reconciliation
  • Multi-product subscriptions with independent pricing
  • Annual/monthly toggle with prorated upgrades
  • Team/organizational billing with seat management
  • Free trial with credit card required upfront
What we build

Subscription billing system deployed — plan management, upgrade/downgrade flows, invoice history, and payment method management

Plan management

tier comparison, upgrade/downgrade, cancel

Usage display

current usage vs. limits for usage-based plans

Invoice history

downloadable PDF invoices with line items

Payment method management

add, update, remove cards

Billing portal

white-labeled customer billing dashboard

Webhook handlers

payment success/failure, subscription lifecycle events

Engagement

One honest number to start.

Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.

Tier · Web ApplicationFixed scope
From$25,000

Subscription billing system deployed — plan management, upgrade/downgrade flows, invoice history, and payment method management

99% client retention across 40+ projects
Process

Three steps, every time.

The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.

01Week 0

Brief & discovery.

We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.

02Weeks 1–N

Build & ship.

Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.

03Post-launch

Warranty & retainer.

30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.

Why fixed-price

Why Fixed-Price Matters Here

Billing systems have defined Stripe integration patterns. Fixed-price from the spec.

FAQ

Questions, answered.

Stripe Billing as the backend for subscription and payment management. Custom application layer for the customer-facing experience and any business logic not native to Stripe.

Automated dunning sequence via Stripe's built-in retry logic + custom email sequence. Smart Retries (Stripe's ML-based retry scheduling) enabled by default.

Next step

Tell Ryel about your project.

Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.