House Flipping Calculator
Estimate the profit, ROI and annualised ROI on a house flip. Factor in purchase price, renovation, monthly holding costs (taxes, insurance, utilities), expected selling price, agent commission and closing costs — all in your browser.
How to use
- 1
Enter the purchase price
What you'll pay to acquire the property, before any renovation.
- 2
Estimate renovation and holding
Total renovation budget, monthly holding costs (taxes, insurance, utilities, loan interest), and how many months until you sell.
- 3
Enter sale assumptions
Expected sale price (after repair value), agent commission percentage, and closing costs percentage.
- 4
Read profit and ROI
Total cost, profit, ROI % and annualised ROI (which normalises for the time your capital is tied up).
Common use cases
- Stress-test a flip deal before making an offer.
- Compare two flips with different holding periods by annualised ROI.
- See how a longer-than-expected renovation timeline eats into profit.
Limitations
- This calculator produces an estimate only and is not professional real-estate, tax, accounting or investment advice. Stamp-duty brackets, tax rules and fees vary by jurisdiction and change frequently — always confirm current rates with your conveyancer, tax office or financial advisor before signing anything.
- Carrying costs like loan interest, capital-gains tax, and cost-overruns on renovation are not separately modelled — add them to holding or renovation as needed.
- Agent commission and closing costs are applied to the sale price as a percentage. The model doesn't account for seller-paid buyer concessions or staging costs.
Frequently asked questions
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