Buy vs. Build in 2026: The Questions That Actually Matter

For twenty years the default advice was “buy unless you can't.” It was good advice: custom development was slow, risky, and expensive, while SaaS was cheap and instant. Both sides of that equation have moved. Modern tooling and AI-assisted development have cut build costs dramatically, while the true cost of “buying” — per-seat pricing that scales with your success, integration duct tape, workflow compromises — has kept climbing.

The wrong question

“Is there software that does this?” is the wrong question. There is always software that sort of does it. The right question is: is this process a commodity or a differentiator? Payroll is a commodity — buy it and never think about it again. But the workflow your customers actually feel — how you quote, schedule, fulfill, or price — is where you win or lose. Renting the same software as your competitors caps you at parity.

The 2026 math

• Count the seats: a $79/user/month tool across 60 users is $57k a year, forever, with annual increases. Five years of that funds serious custom software you own outright.
• Count the workarounds: every spreadsheet that lives alongside the SaaS tool is the cost of the workflow gap, paid in labor.
• Count the switching cost: SaaS data export is a checkbox on the sales call and a nightmare at renewal time.
• Count the compounding: custom software gets more valuable as it absorbs more of your process; SaaS gets more expensive.

A sane default

Buy commodities. Build differentiators. And when you build, insist on owning the code, the data, and the infrastructure accounts — otherwise you've just bought the world's most expensive subscription.