Continue your plan
Useful next calculations
When to use this calculator
- Before buying, renting, refinancing or reviewing a property investment.
- When you want to compare cash flow, tax, yield or ownership costs.
- When you need a fast estimate before speaking to an agent, lender or adviser.
- When you want to see how a rate or price change moves the result.
A realistic US planning example
Use these sample inputs as a quick scenario test, then change one variable at a time to compare outcomes.
| Input | Value |
|---|---|
| Purchase Price ($) | $0.30 |
| Renovation Cost ($) | $500 |
| Agent & Legal Fees ($) | 35 |
| Sale Price ($) | $0.30 |
After entering these figures, review profit, total cost and roi together rather than in isolation. Then rerun the tool with one input adjusted.
How to read your results
Profit
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
Total Cost
The headline outcome of this calculation. It is most useful when read alongside the supporting metrics rather than in isolation.
ROI
The figure produced by this output for the inputs you entered. Change one variable at a time if you want to see what drives it.
Method & assumptionsAuthoritative sources
This calculator estimates gross profit on a property flip by subtracting total costs from the anticipated sale price. Total cost is the sum of purchase price, renovation spend, and agent fees entered. Return on investment is then expressed as profit divided by total cost, as a percentage. This gives a quick sense of whether a project meets your minimum return threshold before committing capital.
The calculator does not include property transfer tax, finance costs (bridging loan interest and arrangement fees), legal fees on purchase and sale, or Capital Gains Tax — all of which are material on a real transaction. For a property held as an investment property rather than a main residence, the 5% property transfer tax surcharge for additional dwellings applies in England. If tax authority treats the flip as a trading activity rather than a capital disposal, income tax and social insurance contributions may apply instead of CGT. Users should add these costs manually and consult a tax adviser before committing to a project.
Common mistakes
- !Using an assumption that is not supported by a current local quote, bill, statement or official source.
- !Treating a generic estimate as a lender, provider, payroll or tax authority decision.
- !Mixing monthly and annual inputs without converting them consistently.
- !Testing only one scenario instead of checking how a cautious assumption changes the result.
What to do next
- Run a second scenario with a cautious assumption so you can see the downside clearly.
- Compare the result with the related calculators below before making a decision.
- Check current local rules, eligibility and provider terms before applying or committing money.
- Keep a record of the assumptions so you can update the estimate when a quote, bill or pay figure changes.
Frequently asked
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