What does introducing subscription billing cost?
Updated: 2026-09
Subscription billing costs very different amounts depending on the pricing model, tax requirements and error handling. The effort rarely sits in connecting the payment provider but in tax treatment, compliant invoicing and recovering failed payments. Clear range after a first conversation.
Billing looks like a solved problem: connect a payment provider and money flows. That view regularly underestimates the effort many times over, because the payment itself is the easy part.
The effort sits in what happens around it: correct tax treatment, compliant invoices, plan changes mid-period, refunds, and handling payments that fail. Each of those is small on its own and in aggregate the bulk of the work.
What drives the cost
Complexity of the pricing model
A single plan is trivial. Tiers, usage-based components, add-ons and mid-period plan changes are not.
Tax requirements
VAT across borders, reverse charge and the Swiss specifics are their own effort.
Invoicing
Compliant invoices and the Swiss QR invoice are not a by-product of payment but separate work.
Error handling
Idempotent event processing and considered dunning are the part that protects revenue.
Existing customers
Migrating with live subscriptions is considerably more work than building from zero.
How we price
- 01
Fixed price
Where the scope can be clearly bounded, we work to a binding fixed price. You know exactly what it costs before the project starts — no open-ended hourly billing, no surprises.
- 02
Time and materials against an estimate
Where the scope is not yet fully settled at the start, we work transparently against effort — with an estimate discussed in advance and regular cost control, so nothing runs away.
- 03
Engagement / retainer
For ongoing support — advisory, governance or continuous optimisation — we agree an engagement with a defined scope per month. Predictable cost, flexibly adjustable.
We deliberately publish no online prices: every case differs. After a short first conversation you receive a binding fixed price or clear frame.
Parent service: SaaS Product Development
Matching offers
Stripe billing integration (DACH)
This package builds your SaaS subscription billing on Stripe reliably: plans, trials, dunning for failed payments, VAT handling and Swiss QR invoices — with idempotent webhook processing. The result is billing that does not lose revenue to technical detail and that fits the DACH market.
SaaS launch package
The launch package takes a SaaS product from idea to market: a sound architecture, the decisive core features, billing, onboarding and deployment — guided, with a clear focus on the first paying customer. The result is not a prototype but a production-ready product that can generate revenue.
API & system integration
A clean integration connects your systems and third-party services so that data flows reliably — with idempotent processing, error handling and monitoring. The result is a connection that holds even when a target system goes down or an event arrives twice.
FAQ
Why is there no specific price on the website?
Because a serious price depends on the actual scope, and a number online would almost always be wrong — too high deters, too low leads to unpleasant surprises. After a short first conversation we give you a binding fixed price or a clear range.
How do I get to a binding fixed price?
Through a short, free first conversation in which we clarify scope, goals and constraints. On that basis you receive a specific, binding price — with no hidden costs.
What does bad billing cost?
Usually more than good billing. Failed payments without recovery, wrong tax treatment and duplicated actions cost money and trust continuously.
Why is the payment provider not enough on its own?
It processes the payment. Tax logic, invoicing to local requirements, plan changes and the link to your product remain your responsibility.