Calculator
House Flip Calculator
Purchase, rehab, holding costs, and selling costs rolled into a single profit and ROI projection.
House Flip Worksheet
$
$
$
mo
$
%
%
Total project cost
Total cash invested
Projected profit
Return on cash invested
The formula
Total cost
Profit
ROI
Holding costs (loan interest, insurance, utilities, tax) accrue every month the project takes, so an optimistic timeline quietly inflates ROI — stress-test with a slower timeline before committing.
Selling costs (agent commission, closing costs) are calculated against the after-repair value, since that is what the sale price is based on, not the purchase price.
This is a single-scenario estimate. Real rehab budgets commonly run over — many flippers build in a contingency of 10–15% on top of the rehab line.