Flat-rate vs time-and-materials pricing for contractors

How flat-rate pricing works

You quote one price for the task before work starts, built from your labor, materials, overhead and profit target. The customer knows the cost up front and you keep the upside when the job goes smoothly.

How time-and-materials works

You bill actual hours at a set rate plus materials, usually with a markup. It suits jobs where scope is unknown, such as troubleshooting or remodel work behind walls.

When flat-rate fits

Repeatable tasks with a known range: drain clearing, a standard water heater swap, a tune-up, a ceiling fan install.

When time-and-materials fits

Open-ended diagnostics, custom work and anything where the customer may change scope. Put a not-to-exceed or check-in point in writing.

Avoid under-charging

Build your price from your real cost per labor hour (wages, taxes, vehicle, insurance, tools), then add overhead and profit. Use the free markup and margin calculator to check that your margin matches your markup.

Is flat-rate pricing better for contractors?

Neither is better in every case. Flat-rate suits repeatable tasks; time-and-materials suits unknown scope.

How do I set a flat rate?

Estimate hours, multiply by your fully loaded labor rate, add materials with markup, then add your profit target. Review the numbers against jobs you have already completed.