Fix and Flip Profit: How Investors Calculate True Deal Returns

Fix and flip profit is the net profit earned after all acquisition, renovation, holding, and selling costs are deducted from the final sale price. It represents the true financial return of the project, not just the difference between the purchase price and the resale price. Because flipping involves many moving parts—such as contractor bids, carrying costs, and market shifts—accurately calculating profit ensures you are making informed decisions and protecting your investment.

The calculator uses a full deal structure from purchase through sale:

Net Profit = ARV − (Purchase Price + Buying Closing Costs + Rehab Budget + Total Holding Costs + Selling Closing Costs)

Each input represents a real part of the deal:

• Purchase Price is what you pay to acquire the property.
• Buying Closing Costs include title, escrow, inspection, lender fees, and other acquisition costs.
• Rehab Budget is the total cost of renovation, including labor, materials, and permits.
• Holding Period (Months) is how long you expect to own the property.
• Monthly Holding Costs include financing, taxes, insurance, utilities, and other carrying costs.
• Total Holding Costs are calculated as Holding Period × Monthly Holding Costs.
• After Repair Value (ARV) is the projected resale price once renovations are complete.
• Selling Closing Costs include agent commissions, transfer taxes, title fees, and other selling expenses.

The calculator also uses these supporting formulas:

Total Investment = Purchase Price + Buying Closing Costs + Rehab Budget + Total Holding Costs

ROI = Net Profit ÷ Total Investment × 100

Annualized ROI = ROI × (12 ÷ Holding Period)

MAO (70% Rule) = ARV × 70% − Rehab Budget

Selling closing costs are included in net profit, but shown separately from Total Investment because they occur at the exit, not during the capital deployment phase of the deal.

To see how the numbers come together, consider a typical flip using this structure:

• Purchase Price: $180,000
• Buying Closing Costs: $3,500
• Rehab Budget: $30,000
• Holding Period: 4 months
• Monthly Holding Costs: $1,500
• After Repair Value (ARV): $280,000
• Selling Closing Costs: $19,600

Total Holding Costs:
4 × $1,500 = $6,000

Total Investment:
$180,000 + $3,500 + $30,000 + $6,000 = $219,500

Total Costs:
$219,500 + $19,600 = $239,100

Net Profit:
$280,000 − $239,100 = $40,900

ROI:
$40,900 ÷ $219,500 × 100 = 18.6%

Annualized ROI:
18.6% × (12 ÷ 4) = 55.9%

MAO:
$280,000 × 70% − $30,000 = $166,000

This deal produces a solid dollar profit, but the ROI falls in the marginal range. That means the deal works, but the margin is not wide enough to ignore risk. Small changes to ARV, rehab costs, or timeline could significantly impact the outcome.

The calculator evaluates deals using ROI, not just dollar profit. A deal can show a healthy profit but still be weak if too much capital is tied up or the timeline is too long.

• Deal loses money: Net profit is zero or negative. The deal does not cover its full cost structure.
• Below minimum return threshold: ROI is under 10%. The spread is typically too thin for the risk involved.
• Marginal deal: ROI is 10%–19.9%. The deal may work, but needs careful stress testing.
• Strong deal: ROI is 20% or higher. This is generally stronger territory if the inputs are realistic.

Most experienced investors target at least 20% ROI to account for delays, cost overruns, and market shifts. Dollar profit still matters, but ROI determines whether the return is strong enough for the capital and time required.

Fix and flip profit matters because it forces the deal to stand up to real costs. It removes the guesswork and shows whether the spread between purchase price and ARV is actually wide enough to support the project.

• It shows whether the deal is worth pursuing
• It helps prevent overpaying at acquisition
• It exposes weak assumptions in ARV or rehab estimates
• It accounts for holding costs that reduce profit over time
• It allows deals to be compared using ROI and annualized ROI

More importantly, it turns the deal into a decision. Once you understand how profit, ROI, and MAO work together, you can quickly tell whether a deal has enough margin—or whether it needs to be renegotiated or rejected.

Pros

• Shows true deal profitability after all costs
• Helps define a maximum purchase price
• Supports consistent deal evaluation
• Makes it easier to compare deals using ROI
• Highlights risk when margins are thin

Cons

• Depends on accurate ARV estimates
• Rehab budgets can change during construction
• Holding costs increase if timelines slip
• Selling costs vary by market conditions
• Does not include income taxes

Most bad deals do not come from bad math. They come from weak assumptions.

• Overestimating ARV based on poor comps
• Underestimating the rehab budget
• Ignoring buying closing costs
• Underestimating monthly holding costs
• Assuming the project timeline will be exact
• Forgetting selling closing costs
• Relying on the 70% Rule without deeper analysis

A deal that only works under perfect assumptions is usually too thin. Run the numbers with a lower ARV, higher rehab costs, and a longer holding period to see how much margin you actually have.

Fix and Flip Profit vs MAO
Profit shows what the deal may earn. MAO shows the maximum price you should consider paying based on the 70% Rule.

Fix and Flip Profit vs ROI
Profit is the dollar amount. ROI shows how strong that profit is relative to the capital invested.

Fix and Flip Profit vs Annualized ROI
Annualized ROI adjusts for time, allowing you to compare deals with different timelines.

Fix and Flip Profit vs ARV
ARV is the projected resale price. Profit is what remains after all costs are removed from that price.

Fix and Flip Profit vs Cash Flow
Cash flow applies to rental properties. Fix and flip profit applies to resale deals.

Market conditions directly affect how a deal performs between purchase and sale.

• Stronger markets can support higher ARV
• Slower markets increase holding time
• Higher interest rates increase financing costs
• Contractor demand can raise rehab costs
• Seasonality can affect resale timing
• Local buyer expectations influence renovation decisions

Even small shifts in ARV or timeline can change a deal from strong to marginal. That’s why ARV should be based on recent comparable sales and not assumptions.