Web Development
SaaS Development
The product is maybe half of it. The other half is tenancy, billing, permissions, onboarding and the admin tooling you will need on day two.
SaaS development builds software sold as a subscription, which means multi-tenancy, billing, onboarding and account management as well as the product itself. The Nexclick scopes those first, because they are where SaaS budgets are actually spent and where quotes based on a feature list go wrong.
Is this you?
What usually prompts the call
- You have a working internal tool and customers keep asking whether they can buy it.
- You have been quoted for "the app" with no mention of billing, tenancy or onboarding.
- Your first version was built without multi-tenancy and every new customer is a deployment.
- You are pre-launch and need to know what this actually costs before raising or committing.
What we do
The actual deliverables
Things that appear on an invoice, not adjectives.
- Tenancy model decided first
- Shared database with row-level isolation, schema per tenant, or separate instances. This decision shapes everything else and is the most expensive thing to reverse.
- Billing and subscription logic
- Plans, trials, upgrades, downgrades, proration, failed payments and dunning. This is where SaaS builds overrun, because a feature list never includes any of it.
- Authentication, roles and permissions
- Users, teams, invitations, roles and single sign-on where enterprise customers will demand it. Retrofitting permissions into a live product is genuinely painful.
- Onboarding to first value
- Getting a new account to something useful quickly. Activation is the metric that decides whether trials convert, and it is usually designed last if at all.
- Admin and support tooling
- The internal screens your team needs to impersonate an account, fix data and answer a support ticket. Universally forgotten and needed from week one of trading.
- Usage tracking and limits
- Metering, quota enforcement and the upgrade prompts that follow. Needed before the first customer exceeds a plan, not after.
- Deployment, monitoring and data isolation
- CI/CD, error reporting, backups per tenant, and a documented answer to "can another customer see our data" — because enterprise buyers will ask.
Checklist
The SaaS work that never appears in a quote
Feature lists describe the product. This is everything else you need before you can charge a customer. If a quote does not mention most of these, it is pricing half the job.
- 01Tenancy model — how one customer’s data is isolated from another’s.
- 02Sign-up, email verification and password reset.
- 03Team invitations, roles and permission checks on every endpoint.
- 04Single sign-on, which enterprise customers will require eventually.
- 05Plan definitions, and what happens at each limit.
- 06Free trial handling, including what happens when it ends.
- 07Upgrades, downgrades and proration mid-cycle.
- 08Failed payment handling and dunning emails.
- 09Cancellation, and whether data is retained or deleted.
- 10Refunds and partial refunds.
- 11VAT handling, including EU and reverse charge if you sell abroad.
- 12Invoices and receipts customers can download themselves.
- 13Usage metering and quota enforcement.
- 14Admin tooling to impersonate an account and fix data.
- 15Support tooling to see a customer’s state when they raise a ticket.
- 16Audit logging, which enterprise buyers ask about in procurement.
- 17Per-tenant backup and restore.
- 18A documented data processing position for UK GDPR.
- 19Status page and incident communication.
- 20Onboarding that gets an account to first value.
How it works
Step by step, with timeframes
Timeframes are typical rather than guaranteed, and they assume we get account access and approvals when we ask.
- 01Week 1–4
Product and commercial scoping
Tenancy, plans, permissions, billing rules and the minimum genuinely sellable scope. Longer than clients expect and the reason a price can hold.
- 02Week 4–8
Foundations
Authentication, tenancy, billing and admin tooling. Little of it is visible in a demo and all of it is required before you can charge anyone.
- 03Week 8–20
Build the product
Features in increments, released to a small set of real users as early as they can usefully be used.
- 04Week 20–26
Launch and iterate
Monitoring, support tooling verified, and a period of rapid iteration while real usage tells you what the second version should be.
What you get
Reporting and ownership
- A written commercial specification — plans, limits, billing rules — before a price is agreed.
- Admin and support tooling built as part of the product, not requested in month two.
- A documented data isolation model you can show an enterprise buyer or an auditor.
- Automated tests on billing and permission paths, where silent failures cost real money.
- Full repository ownership and architecture documentation.
Tools and platforms
- Next.js or Laravel
- PostgreSQL with row-level security
- Stripe Billing
- TypeScript
- Sentry & structured logging
- Playwright
- CI/CD pipelines
Timeline
How long this actually takes
Twenty to twenty-six weeks to a genuinely sellable first version, of which three to four are scoping. The unglamorous half — tenancy, billing, permissions, admin tooling — typically takes as long as the product features and appears in almost no quote. Two honest points. If you are pre-revenue and testing an idea, build the narrowest thing that can be sold to five people rather than a platform. And SaaS is never finished: the ongoing development cost after launch usually exceeds the build, and planning for a fixed-price project with an end date is the most common way founders run out of money.
Pricing model
Project, then retainer
A fixed-price discovery and specification engagement first, then either a fixed price against it or a monthly team rate. We will recommend the smallest sellable scope rather than the largest.
Questions
SaaS Development questions
Why does SaaS cost so much more than a website?
Because roughly half of it never appears in a demo. Tenancy, billing, permissions, admin tooling and onboarding take as long as the visible product and are non-optional before you can charge anyone. A quote that only prices the features is pricing half the work.
Should we build our own billing?
No. Use Stripe Billing or an equivalent. Subscription billing has an enormous number of edge cases — proration, dunning, tax, disputes — and building it yourself means maintaining that forever. It is the clearest buy-rather-than-build decision in this category.
What tenancy model should we use?
For most B2B SaaS, a shared database with row-level isolation — simpler to operate and scales well. Schema or instance per tenant suits products with strict data residency or heavy customisation per customer. It is decided at scoping because changing it later is close to a rebuild.
How small can a first version be?
Small enough that five real customers would pay for it. The most common founder mistake is building a platform before validating that anyone wants the core. We will actively push scope down, which occasionally costs us work and consistently produces better outcomes.
What is the ongoing cost once a SaaS product is live?
Higher than the build, over time. Hosting, monitoring, third-party services and — the big one — continuous development. SaaS is never finished. Planning it as a fixed project with an end date is the most common way founders run out of runway just as they find product-market fit.
Do we need SOC 2 or ISO 27001?
Not to start. You will need them when you sell to enterprise buyers, and their procurement teams will tell you. What matters now is building in a way that does not obstruct certification later — audit logging, access control and documented data handling are much cheaper designed in than retrofitted.
Last reviewed 28 July 2026.
Tell us what you are trying to fix
A 20-minute call, no pitch deck. The Nexclick will tell you what we would do, roughly what it costs, and whether we are the right people for it.