People assume the choice between fixed-fee and hourly is about price. It isn't. It's about who absorbs the risk and what the contract pays you to be good at. Here is the whole argument in one square.
The two axes.
The horizontal axis is what the contract pays you to be good at. The vertical axis is who is holding the bag when the estimate is wrong. Everything else is downstream of those two questions.
Why hourly quietly rewards the wrong thing.
- The meter rewards duration. Under hourly, a slow week is a good week for the vendor. That is not malice. It is arithmetic.
- The overrun lands on the client. When the estimate slips, the person who didn't write the estimate pays for it.
- Nobody is paid to finish. The incentive to close the ticket is the incentive to stop earning.
Hourly pays you to be present. Fixed-fee pays you to be done. We would rather be done.
Why fixed-fee is the only stable corner.
When we name a number up front, the risk of a bad estimate moves to the side of the table that wrote it — ours. That single move re-prices everything: we now want fewer revisions, tighter scope, and a clean finish.
- We absorb the overrun, so we estimate honestly.
- We're paid for the outcome, so lingering costs us, not you.
- The disagreements move to before the work, where they're cheap.
The diagram has four boxes. Three of them are unstable — someone is being paid to do the wrong thing, or holding risk they didn't price. The lower-right corner is the only one where both sides want the same thing. That's where we sit, and it's why we never bill hourly.
— Kelvin Tran. Walnut Creek, CA. June 2026.
Comments