The 30-second answer
A lean SaaS MVP with auth, billing, a multi-tenant data model and a single core workflow costs $15,000–$25,000 and ships in 8–10 weeks. A mid-market SaaS with admin tools, analytics, integrations and an AI feature runs $40,000–$80,000 over 12–20 weeks. An enterprise-grade platform with SSO, audit logs, custom workflows, mobile apps and multiple AI agents starts at $120,000.
Two-thirds of the variance comes from feature scope. The remaining third comes from design polish, integration count and compliance requirements (SOC 2, HIPAA, PCI-DSS).
Below is the exact breakdown per feature so you can build your own estimate before talking to any vendor.
Authentication and user management — $1,500–$6,000
Email + password with email verification, password reset and session management: $1,500–$2,500 using a managed provider (Supabase Auth, Clerk, Auth0, Cognito). Building from scratch on Postgres + JWT: $3,000–$5,000.
Add social login (Google, Apple, GitHub, Microsoft): +$500–$1,000. Add magic links or passwordless: +$800. Add multi-factor authentication (TOTP, SMS, WebAuthn): +$1,500.
Enterprise SSO (SAML, OIDC, SCIM provisioning): +$4,000–$8,000. This is a hard requirement for selling to mid-market and enterprise customers but is often skipped in v1.
Multi-tenant architecture — $2,500–$8,000
Row-level security on a shared database (the default for most B2B SaaS): $2,500–$4,000. This includes tenant isolation policies, an organisations/workspaces model, invites, roles and tenant-scoped APIs.
Schema-per-tenant (better isolation, harder ops): $5,000–$8,000. Reserve this for regulated industries or customers who explicitly demand it.
Database-per-tenant (highest isolation, highest cost): $10,000+ in setup and 3–5x the monthly hosting bill. Rare for early-stage SaaS.
Billing and subscriptions — $2,000–$7,000
Stripe Billing with monthly/annual plans, trials, upgrades, downgrades and a customer portal: $2,000–$3,500. This covers webhooks, invoice generation, dunning and basic tax handling via Stripe Tax.
Usage-based billing (metered events, tiered usage, overages): +$1,500–$3,000. Required for AI products, API products and consumption-based SaaS.
Multiple payment providers, multi-currency, regional gateways (e.g. 2Checkout, Paddle, Razorpay for India, JazzCash/EasyPaisa for Pakistan, Tap/Telr for the GCC): +$2,000 per additional provider.
Core user dashboard — $4,000–$12,000
A polished React dashboard with sidebar navigation, 5–8 main pages, data tables with sort/filter/pagination, forms, empty states, loading states and responsive design: $4,000–$7,000.
Add real-time updates (WebSockets, Supabase Realtime, Pusher): +$1,500. Add advanced data grids (virtualised tables, inline editing, bulk actions): +$2,000. Add custom charts and KPI widgets: +$1,500–$3,000.
Design polish is where teams over-spend. A senior designer producing a coherent design system upfront saves 30–40% of dashboard build cost downstream — and is the single biggest perceived-quality lever.
Admin and internal tools — $3,000–$10,000
Every SaaS needs an internal admin: tenant search, impersonation, manual subscription overrides, feature flags, audit log viewer. Build cost: $3,000–$5,000 with a tool like Retool or React Admin, $6,000–$10,000 custom.
Skipping the admin panel is the most common false economy in early SaaS. Your support team will spend 20+ hours/week querying the database directly without it.
AI features — $2,000–$15,000 per feature
Single LLM call with prompt engineering (summarise, classify, draft): $2,000–$3,500 including basic eval harness.
RAG over user documents (vector DB, chunking, retrieval, citations): $5,000–$8,000. Add document upload, OCR and PDF parsing: +$2,000.
Multi-step agent with tool calling (e.g. an AI that books meetings, queries your DB, sends emails): $8,000–$15,000. Add human-in-the-loop review: +$2,500.
Custom fine-tuned or distilled model: $10,000+. For 90% of SaaS use cases, a well-prompted GPT-4 class model + RAG beats fine-tuning on both cost and quality.
Mobile apps — $8,000–$25,000
Companion iOS + Android app via React Native or Flutter (read-mostly, mirrors web functionality): $8,000–$14,000. App Store + Play Store submission included.
Native-feeling, offline-first app with push notifications, biometrics and deep linking: $15,000–$25,000.
Fully native iOS (Swift) + Android (Kotlin): 1.6–1.9x the cross-platform cost. Only worth it if you need platform-specific frameworks (HealthKit, ARKit, CarPlay, Wear OS).
Integrations — $800–$3,000 per integration
Pre-built OAuth integration with a major SaaS (Slack, Gmail, Google Calendar, HubSpot, Salesforce, Notion): $800–$1,500 per integration.
Webhook receiver + transformation pipeline (Stripe events, Shopify orders, custom partner): $1,000–$2,000 per source.
Bidirectional sync with conflict resolution: $2,000–$3,000.
An iPaaS layer (Zapier-style internal connector framework) so non-engineers can add integrations: $8,000–$15,000.
Analytics, logging and observability — $1,500–$5,000
Product analytics wiring (PostHog, Mixpanel, Amplitude): $1,000–$2,000 including event taxonomy and dashboards.
Error tracking (Sentry), logging (Axiom, Logflare) and uptime monitoring (BetterStack, Uptime Kuma): $1,000.
Customer-facing analytics dashboards inside the product: $2,000–$4,000 depending on chart complexity.
Compliance and security — $5,000–$50,000
Baseline security hygiene (RLS, secrets management, dependency scanning, basic pentest): $2,500 included in any senior SaaS build.
SOC 2 Type I readiness: $8,000–$15,000 in engineering + $4,000–$8,000 in tooling (Vanta, Drata, Secureframe).
HIPAA-ready architecture (BAA, encryption at rest, audit logs, role-based PHI access): $10,000–$20,000.
PCI-DSS level 1 (you process card data directly): $25,000+. Almost no SaaS should do this — outsource to Stripe.
DevOps, CI/CD and hosting — $1,500–$8,000 setup, $100–$2,000/month
Vercel + Supabase + Cloudflare on the edge: $1,500 setup, $50–$300/month for an early-stage SaaS. The cheapest viable production stack in 2026.
AWS or GCP with Terraform, ECS/EKS, RDS, CloudFront, observability: $5,000–$8,000 setup, $400–$2,000/month. Worth it past ~10,000 MAU or for enterprise contracts.
Self-hosted on a single VPS (Hetzner, DigitalOcean): $800 setup, $20–$80/month. Fine for internal tools, risky for paying customers without a strong on-call rotation.
Worked example — a $35,000 SaaS MVP
Email + Google auth ($2,000) + multi-tenant workspaces with RLS ($3,500) + Stripe Billing with trials ($2,500) + 6-page dashboard with data tables and one chart page ($7,000) + basic admin panel ($3,500) + one AI feature (RAG over uploaded PDFs) ($6,000) + 3 integrations ($3,000) + PostHog + Sentry wiring ($1,500) + Vercel + Supabase setup ($1,500) + project management + QA + launch ($4,500) = $35,000 over 12 weeks.
Add a React Native mobile app: +$12,000 and +4 weeks. Add SOC 2 readiness: +$12,000 and +6 weeks. Add a second AI agent with tool calling: +$10,000 and +4 weeks.
Where teams over-spend
Custom design systems before product-market fit — pick shadcn/ui + Tailwind and ship.
Microservices on day one — start with a monolith on Next.js or TanStack Start; split only at real scale pain.
Building auth, billing or admin tooling from scratch when Clerk, Stripe and Retool exist.
Fine-tuning LLMs when a well-prompted frontier model + RAG would work.
SOC 2 before a single paying enterprise asks for it.
Where teams under-spend
Senior design — the single highest ROI line item in any SaaS budget.
Observability — Sentry + PostHog from day one pays for itself within a month.
Internal admin tooling — saves 20+ hours/week of engineer time after launch.
Onboarding flow — most SaaS lose 60%+ of signups in the first 5 minutes. Spend $3,000–$5,000 here.
Build a personalised estimate in 60 seconds
Use the interactive pricing calculator at /pricing to tick the exact features you need. It generates a branded PDF invoice with line-item costs, total, timeline and our standard terms — emailed to you instantly. From there, book a free 30-minute call from /contact and we'll convert the estimate into a fixed-scope proposal within 48 hours.
WebCuber has shipped 200+ SaaS platforms across Pakistan, the UAE, the UK and the US. Whatever feature mix you're considering, we've built it before — and we'll tell you up front what's worth doing in v1, what to defer, and what to skip entirely.
Ready to start?
Let's build your next business win.
Book a free 30-minute strategy call with the WebCuber team.
Frequently asked questions
What's the cheapest viable SaaS MVP in 2026?+
Around $12,000–$15,000 for a true production-grade MVP — Stripe billing, multi-tenant auth, one polished core workflow, basic admin and observability. Anything cheaper either skips required pieces (admin, observability, billing edge cases) or uses junior developers, both of which cost 2–3x more to fix later.
How long does a SaaS MVP take to build?+
8–10 weeks for a lean MVP, 12–16 weeks for a mid-market product, 20+ weeks for enterprise-grade. WebCuber ships a working demo every Friday so you see progress weekly, not at the end.
Should I build with Next.js, TanStack Start, Remix or Astro?+
For SaaS in 2026 we default to Next.js or TanStack Start — both give you SSR, server functions, type-safe routing and edge deployment. Astro is better for marketing sites. Remix is solid but has less momentum than its peers right now.
Do I own the code?+
Yes. Full IP transfer and source code handover on day one of every WebCuber engagement, with no lock-in to our hosting, our team or our tools.
Can you ship the SaaS and then keep iterating with us?+
Yes — most clients move onto a monthly retainer post-launch for ongoing features, performance work, AI evals and growth experiments. Retainers start at $2,500/month for ~30 senior hours.
Written by
Hammad Ali
Founder & CEO · WebCuber Team
