The Sticker Price Is Misleading
SaaS looks cheaper on paper: $30 to $300 a month per tool. But most growing businesses aren't running one SaaS tool, they're running five to ten, and the monthly totals stack up fast, especially once you add per-seat pricing as your team grows.
The Real Comparison
| SaaS Stack | Custom Build | |
| Upfront cost | Low | Higher |
| Cost at 24 months | Grows with seats/usage | Flat maintenance fee |
| Fits your exact workflow | Rarely | Always |
| Data ownership | Vendor's platform | Yours |
When SaaS Actually Wins
SaaS makes sense when your needs are genuinely standard, when you're pre-revenue and need speed over fit, or when the tool category (accounting, payroll) benefits from compliance work you shouldn't be rebuilding yourself.
When Custom Wins
Custom wins the moment you're paying for multiple tools to compensate for the fact that none of them quite fit, or when your workflow is genuinely different enough from the "average customer" that SaaS software is designed for.
FAQ
Can I start with SaaS and move to custom later? Yes, and it's common — SaaS is a reasonable way to validate a workflow before investing in a custom version of it.
Does custom software require ongoing dev support? Yes, budget for a maintenance retainer just like you would budget for SaaS subscription fees.