Rex says
Money math without the spreadsheet headache. Plug in your numbers and I'll show you exactly where the dollars land.
Try a scenario
Click to load — tweak from there.Inputs
Result
Net profit
$44,600
Return on invested capital
13.6%
Annualized ROI
27.2%
Maximum allowable offer (70% rule)
$220,000
Total holding costs
$11,400
Selling costs
$28,000
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter after repair value ($).
- 2Enter purchase price ($).
- 3Enter rehab budget ($).
- 4Enter months to complete and sell.
- 5Enter monthly holding costs ($).
- 6Enter selling costs (% of ARV).
- 7Enter buying / closing costs ($).
- 8Read your net profit on the right — it updates as you type.
- 9Hit Share to keep the scenario or send it to someone.
About this calculator
The 70% rule caps your offer at 70% of after-repair value minus rehab. Holding costs are the silent killer — every extra month of interest, taxes, and utilities comes straight off the profit.
Worked example
Using the values the calculator loads with:
Inputs
- After repair value: 400000 $
- Purchase price: 250000 $
- Rehab budget: 60000 $
- Months to complete and sell: 6
- Monthly holding costs: 1900 $
- Selling costs: 7 % of ARV
- Buying / closing costs: 6000 $
Results
- Net profit: $44,600.00
- Return on invested capital: 13.6%
- Annualized ROI: 27.2%
- Maximum allowable offer (70% rule): $220,000.00
- Total holding costs: $11,400.00
- Selling costs: $28,000.00
What each field means
Inputs
- After repair value ($)
- The after repair value used in the calculation, measured in $. Starts at 400000 $ so you have a working example on load.
- Purchase price ($)
- The purchase price used in the calculation, measured in $. Starts at 250000 $ so you have a working example on load.
- Rehab budget ($)
- The rehab budget used in the calculation, measured in $. Starts at 60000 $ so you have a working example on load.
- Months to complete and sell
- The months to complete and sell used in the calculation. Starts at 6 so you have a working example on load. Accepted range: 1–24.
- Monthly holding costs ($)
- The monthly holding costs used in the calculation, measured in $. Starts at 1900 $ so you have a working example on load.
- Selling costs (% of ARV)
- The selling costs used in the calculation, measured in % of ARV. Starts at 7 % of ARV so you have a working example on load. Accepted range: 0–15 % of ARV.
- Buying / closing costs ($)
- The buying / closing costs used in the calculation, measured in $. Starts at 6000 $ so you have a working example on load.
Results
- Net profit
- Returned as a money amount in US dollars and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Return on invested capital
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Annualized ROI
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Maximum allowable offer (70% rule)
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Total holding costs
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Selling costs
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the house flipping profit calculator work?
The 70% rule caps your offer at 70% of after-repair value minus rehab. Holding costs are the silent killer — every extra month of interest, taxes, and utilities comes straight off the profit. The underlying maths is: Profit = ARV − purchase − rehab − holding − selling costs; MAO = ARV × 70% − rehab.
What do I need to enter?
7 values: after repair value, purchase price, rehab budget, months to complete and sell, monthly holding costs, selling costs, and buying / closing costs. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the net profit result mean?
It is returned as a money amount in US dollars and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
Who is this tool for?
It's built for anyone comparing money scenarios before committing — budgeting a payment, sanity-checking a quote, or seeing what a change in rate or term actually costs.
Accuracy and limitations
- Results are estimates before tax, fees, and inflation unless an input explicitly covers them.
- Rates are treated as fixed for the whole period — variable-rate products will drift from this projection.
- This is educational maths, not financial advice. Check anything contractual with the lender or your accountant.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). House Flip Profit Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/house-flip-profit
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/house-flip-profit" target="_blank" rel="noopener">House Flip Profit Calculator — RevenueLab</a> (2026).</p>
Source: [House Flip Profit Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/house-flip-profit) (2026).