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Calculate ARV, rehab budget, holding costs, and profit margin. Use the 70% rule to determine your maximum offer.
Percent of purchase price
Taxes, insurance, utilities, etc.
Agent commissions, etc.
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Enter the purchase, rehab, holding, and transaction details to unlock your projected profit, ROI, and 70% rule max offer.
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This calculator now stays empty until you supply valid numbers. Dollar fields will add commas automatically as you type.
Free calculator guide
A fix and flip calculator only helps if it captures the costs that usually get underestimated. This page is designed to show the relationship between ARV, rehab scope, holding time, selling costs, and the maximum offer that still leaves real margin.
The calculator estimates projected profit, ROI, cash-on-cash return, and max offer after you account for purchase price, rehab budget, financing, hold time, and sale costs. That makes it more useful than a back-of-napkin 70 percent rule alone.
ARV and rehab assumptions usually create the biggest errors. If ARV is inflated or scope creep is ignored, the flip can look profitable in the spreadsheet while being mediocre in the field.
Use the output to decide whether the spread is wide enough for real execution risk. A healthy projected profit should still survive a softer sale price, longer hold, or higher rehab budget without collapsing.
It shows whether the spread between acquisition cost and expected resale value is large enough after rehab, financing, holding, and sale costs are all included.
No. The 70 percent rule is a fast screening heuristic, but investors still need a full profit and cost model before making an offer.
Because timeline delays, overruns, financing drag, and resale friction can erase margin quickly. The calculator is meant to expose that pressure before the project starts.