Somewhere between $25,000 and $500,000 -- and the gap between those two numbers comes down almost entirely to decisions you make before you write a single line of code.
The honest cost breakdown for building a SaaS product in 2026: solo founder vs agency vs outsourced team, what AI tools actually change, and the ongoing costs nobody mentions.
Real SaaS build costs from 50+ startup builds. The full budget breakdown by stage, stack, and team type, including hidden costs most founders miss.