Lite version

Change order calculator

Scope that shows up after you start needs its own number before anyone keeps working. This prices the extra. It does not write the customer text.

Change order = (extra labor + materials after markup + extra trip) ÷ (1 − margin) ÷ (1 − card %), rounded up. The new job total is the original price plus that amount.

Numbers stay in this browser. This is shop math, not tax, legal, or lending advice.

Start from a trade

Original quoted price ($)

Deposit already held ($)

Extra labor hours

Burdened labor ($/hr)

Extra materials ($)

Materials markup (%)

Extra trip or return fee ($)

Target margin on the change (%)

Card fee (%)

Round the change order up to

Change order

$370

New job total: $820
Balance if approved: $670

Get a yes before you continue

More shop math

Weekly capacityA full calendar is not the same as a full week of paid hours. Drive time counts. This does not track which jobs are already booked.
Job quotePut in the hours, the drive, the materials, and what you want an hour to pay. The calculator returns a break-even price and a suggested quote with your profit goal.
Trip feeDrive time and fuel disappear when they stay buried in the job price. This separates them into a trip fee you can show as its own line.