The parts of a SaaS MVP founders forget to plan

Founders pitch one clever screen. Developers find the screen sits on a pile of unglamorous work because accounts, permissions and payments often take as long to build as the feature itself. That surprises people. It should not.

Plan these early. A quote that covers only the headline feature will grow the moment someone asks how a second user joins, so list the plumbing before anyone prices the work.

Sort every item into three piles: must ship, ship in a thin form, or later, because that sort is the real scope document. Be strict. Developers will rely on it.

Your first customer will not be one person. They will invite a colleague on day two. That calls for a tenant record, an invite email with an expiring token link, a seat count and a way to remove a leaver.

Start with three roles. Owner, member and read only will serve while you resist a permission matrix with twenty toggles that no early customer has asked for. Finer rules can wait, but a role model retrofitted late touches every screen, every API route and every test you have already written.

Single sign on can wait unless your first buyers are larger firms with an IT team, in which case it moves into version one. Note it on the roadmap. Keep user records ready for it.

Taking a card is the easy part. The hard part is what happens when a renewal fails at midnight on a Sunday. Decide how many retries run, which emails go out and when access is limited. Someone on your team must be told.

Handle plan changes, trial endings, invoices with tax details and refunds before launch, or you will do them by hand in a dashboard each week. Stripe or another provider handles cards and sends webhooks for failed charges, but your app still owns the grace period, the downgrade and the reminder wording.

Keep plans and limits in a database table rather than in code, so that a change to a plan limit is an edit and not a release.

Support needs a back office early. Your team must find an account, see its plan, reset a user, extend a trial and read what happened, all without asking a developer to run a query. An admin console removes that queue.

An audit log records who changed what. Start with logins, role changes, billing changes and deletions, because the log then settles disputes and answers half of any security questionnaire a customer sends.

Add impersonation with care. It saves hours of support, but log every session and show a banner so nobody forgets they are inside a customer’s account.

Transactional email is its own small system. Welcome, invite, receipt and reset messages need a sending domain with SPF and DKIM records set up, or they land in spam. Test with Gmail and Outlook inboxes before launch, and give bounces a handler, otherwise invites vanish quietly and a new customer never gets in.

Backups need a schedule and a tested restore. Run a restore drill on staging before launch, because a checkbox on the host proves nothing about whether the data comes back. Delete requests and data exports arrive early.

Defer team analytics, white labelling, public APIs, mobile apps and custom reports, then write the deferred list on a single page and show it to your first customers.