Fix & Flip Calculator: Analyze house flipping projects with rehab and profit estimates. The Fix & Flip Calculator analyzes house flipping projects including purchase price, rehab costs, holding costs, selling costs, and projected profit.
Analyze house flipping deals before you buy. Calculate all costs, project profits, and check against the 70% rule to ensure profitable deals.
Buffer for unexpected costs (10-20% recommended)
Max purchase: $0
70% Rule
Max Purchase = ARV x 70% - Rehab Costs. This ensures room for profit and unexpected expenses.
Input purchase price, rehab budget, financing terms, and holding costs to map out your project.
Enter your After Repair Value based on comparable sales to project your selling price.
See your projected profit, ROI, and whether the deal passes the 70% rule.
House flipping can be highly profitable, but success depends on accurate deal analysis before you buy. Our fix and flip calculator helps you evaluate every aspect of a potential flip to ensure profitability and avoid costly mistakes.
The 70% rule is the foundation of flip analysis, but it's just the starting point. Successful flippers also track their cash-on-cash return, annualized ROI, and profit margin. Understanding these metrics helps you compare deals and allocate your capital efficiently across multiple projects.
The most common mistakes in house flipping are underestimating rehab costs, overestimating ARV, and ignoring holding costs. Our calculator includes a contingency buffer and calculates all holding costs to give you a realistic profit projection. Remember that time is money in flipping - every extra month you hold a property eats into your returns.
While hard money loans have higher interest rates, they offer faster closing and more flexible qualification. This calculator defaults to typical hard money terms but can be adjusted for any financing structure. Compare your options carefully, as financing costs can significantly impact your bottom line.
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Key facts
Profit = after-repair value − purchase price − rehab − holding costs (loan interest, taxes, insurance, utilities) − selling costs (commission, transfer tax, concessions). The 70% rule: maximum offer = 70% × after-repair value − rehab.
A maximum purchase price of $220,000 under the 70% rule, leaving room for holding costs, selling costs and profit. The calculator replaces the rule of thumb with your actual costs.
The 70% rule says pay no more than 70% of the after-repair value minus the repair cost. The 30% left is meant to cover buying, holding and selling costs and the profit. It is a screening tool; in expensive markets flippers work on thinner margins, and in cheap ones the rule can overstate what is safe.
Profit on a property held for resale is usually ordinary income, not capital gain, and can be subject to self-employment tax when flipping is a trade or business. A property held more than a year before sale may qualify for long-term capital gains rates. A tax professional should confirm the treatment.
Last reviewed September 8, 2026 by the EstatePass editorial team. Formulas and program limits are checked against the published rules; figures on this page are arithmetic, not market statistics.
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