MVPable
4-8 weeks Complexity 4/5

B2B SaaS MVP

Core subscription software solving one painful business workflow.

Build a lean, multi-tenant B2B SaaS that replaces spreadsheets and manual workflows. Ship only the core workflow, org/team workspace, minimal RBAC, Stripe-based subscriptions, event tracking, and an internal admin. Validate with activation, week-2 retention, first paid team in 30 days, and early NPS.

Complexity

4/5

Timeline

4-8 weeks

Budget Range

$1,500 – $30,000

Published

Updated

Multiple plans (starter / pro / enterprise) Free tier + paid upgrade Direct outreach (email, LinkedIn, DM) Niche communities (Reddit, Discord, Slack) YouTube / newsletter sponsorship SEO blog + long-tail content

By MVPable · Guide v1 · Published · Updated

Target User

Founder launching recurring-revenue software for teams.

Problem

Teams run critical workflows on scattered spreadsheets and manual steps, creating errors, delays, and no auditability.

MVP Scope

In scope for v1

  • Email-based auth with magic links and basic password fallback
  • Org and team workspace with invites
  • Core workflow: one primary object (e.g., Requests/Tickets/Docs) with statuses, assignments, and comments
  • RBAC: Owner, Admin, Member with resource-level permissions
  • Stripe Checkout + Customer Portal for subscriptions (free + tiered)
  • Usage metering placeholder (record counts) for future tiers
  • Event tracking for activation funnel and core actions
  • Internal admin panel for user/org lookup, plan changes, and feature flags
  • CSV import/export for initial data migration
  • Basic email notifications for mentions/assignments

Out of scope

  • Native mobile apps
  • Complex SSO (SAML/SCIM); support OAuth later
  • Marketplace/integrations beyond email and CSV
  • Advanced workflow automation builder
  • Custom reporting/BI
  • Granular field-level permissions
  • In-app chat/real-time co-editing
  • Internationalization
  • On-prem/self-hosted
  • AI features beyond simple templates

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Execution Timeline

1

Week 1: Scope lock, data model, scaffolding

1 week

Define primary object and statuses; finalize RBAC roles; scaffold repo, auth, org/team models, and minimal UI shell.

2

Week 2: Core workflow CRUD and list views

1 week

Create, update, status transitions, assignments, comments, filters, pagination. Add CSV import/export.

3

Week 3: Team workspace + invites + RBAC enforcement

1 week

Org switcher, team invites, ownership transfer, access control middleware, audit fields.

4

Week 4: Billing (freemium + tiered) and limits

1 week

Stripe Checkout, webhooks, customer portal link, free usage caps, plan gating on features/record counts.

5

Week 5: Analytics and activation

1 week

Track sign-up, org created, first item created, first assignment, first comment. Add success states and checklist.

6

Week 6: Admin panel and ops

1 week

Search users/orgs, force plan, toggle features, impersonation, refund action link, simple health checks.

Budget Ranges

Scrappy (solo builder + AI tools) $1,500 – $4,000

AI IDEs, low-code UI, Stripe, Postgres, basic hosting. Suits experienced IC founders.

Standard (contractor-assisted) $5,000 – $15,000

Part-time engineer/designer, QA pass, sturdier infra, better polish and docs.

Extended (faster validation + polish) $15,000 – $30,000

Dedicated build partner, robust testing, richer admin, tighter analytics, ops playbook.

Risk Warnings

Over-building beyond the single core workflow delays validation.

Multi-tenant permission leaks can expose cross-org data; enforce scoping on every query.

Billing/webhook failures can orphan subscriptions; add retry and reconciliation jobs.

Analytics without clear activation definition yields noisy signals; define events upfront.

CSV import can corrupt data; validate schema and offer dry-run.

Email deliverability issues break onboarding; use verified domains and fallback password login.

Key Assumptions

  • One workflow is painful enough to replace spreadsheets immediately.
  • Teams accept email-based auth to start; SSO not required for initial pilots.
  • Stripe is acceptable for early customers and supported regions.
  • Pilot teams will provide feedback within two weeks.
  • Web app is sufficient; mobile access via responsive design.

Launch Components

Admin Panel 1 option

In-app admin with protected route

Default
Server-rendered table views for users/orgs/subscriptions. Actions: impersonate, reset password, set plan, toggle flags.
No external dependency; fits your codebase and RBAC.

Tradeoffs

Less powerful than dedicated admin tools; minimal UX.
Analytics Tracking 1 option

Activation and core events with PostHog

Default
Track signup, org_created, item_created, assignment_made, comment_added. Weekly retention cohort view and funnel for activation.
Open-source, fast to integrate, good for funnels and cohorts.

Tradeoffs

Adds client + server SDK; self-hosting optional complexity.
Auth 1 option

Magic link + password fallback via a0.dev

Default
Email magic link as default with optional password. Session stores org_id and role. Rate-limited login.
Fast to ship and familiar to B2B users; reduces password friction while keeping a fallback.

Tradeoffs

Enterprises may expect SSO; add OAuth/SAML later.
Billing Subscriptions 1 option

Stripe Checkout + Customer Portal

Default
Free plan with caps; Pro plan via Checkout session; webhooks set entitlements; link to portal for self-serve upgrades/cancellations.
Fastest path to reliable billing and self-serve management.

Tradeoffs

Limited pricing experiments vs. custom billing; regional constraints.
Core Workflow 1 option

Single primary object with status machine

Default
Define one entity (e.g., Request) with statuses (Backlog, In Progress, Done), assignee, due date, comments, and attachments.
Covers 80% of spreadsheet workflows with minimal complexity.

Tradeoffs

Limited flexibility; advanced branching or automations deferred.
Roles Permissions 1 option

RBAC: Owner, Admin, Member

Default
Route guards and query filters check role and org_id. Owners manage billing; Admins manage members; Members use workflow.
Simple to reason about and audit.

Tradeoffs

No custom roles or field-level rules.
Team Workspace 1 option

Organization and team membership with invites

Default
Org model with teams/projects. Email invites with role selection and acceptance token.
Enables multi-tenant structure and simple scaling of access.

Tradeoffs

Cross-team permissions are limited initially.

Validation Signals

  • Activation rate > 40% (complete onboarding)
  • Week 2 retention > 30%
  • At least 1 paid team within 30 days
  • NPS > 30 from early users

Anti-Patterns

  • Building multi-tenant infra before validating single-tenant demand.
  • Adding team features before one user finds it valuable alone.
  • Over-investing in billing tiers before first paying customer.
  • Launching without analytics — you cannot improve what you do not measure.

Typical Stack

Auth

Clerk / Supabase Auth / Auth0

Payments

Stripe Billing

Db

PostgreSQL / Supabase

Hosting

Vercel / Railway / Render

Analytics

PostHog / Mixpanel

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