Build a Full SaaS for $0/Month in 2026

The Myth That Starting Costs Money

In 2026, the free tiers on modern developer tools are production-capable for early-stage products. I ran SocialMate on $0/month infrastructure for the first 6 months.

The Free Stack

**Next.js** — Framework. Free and open source.

**Supabase** — Database + auth + storage. Free: 500MB DB, 1GB storage, 50k monthly auth users.

**Vercel** — Deployment. Free: unlimited personal projects, 100GB bandwidth/month.

**Resend** — Email. Free: 3,000 emails/month.

**Inngest** — Background jobs. Free: 50,000 function runs/month.

**Google Gemini Flash** — AI generation. Free: 15 requests/minute.

**Stripe** — Payments. No monthly fee — 2.9% + 30¢ per transaction only.

Total Monthly Cost

$0 before revenue. The only paid tool worth adding early is Claude Code — it's what makes you fast enough to build everything else in the evenings.

Full setup guide: Vol. 4 of Gilgamesh's Guides. Free.