Free House Flip Calculator

Estimate flip profit, ROI, and margin before you buy. Analyze purchase price, rehab costs, ARV, holding costs, and selling expenses in one place.

What Is a House Flip Calculator?

A house flip calculator is a financial analysis tool that estimates the profit and return on investment (ROI) of a fix-and-flip real estate deal. It calculates: Flip Profit = After Repair Value (ARV) − Purchase Price − Rehab Costs − Holding Costs − Selling Costs. Most experienced flippers target a minimum profit margin of 10% to 15% of the ARV, or follow the 70% rule: never pay more than 70% of ARV minus repair costs.

How to Calculate House Flip Profit

  1. Enter purchase price — what you'll pay for the property
  2. Estimate rehab costs — renovation budget including materials and labor
  3. Set the After Repair Value (ARV) — the expected sale price after renovation, based on comparable sales
  4. Add holding costs — mortgage payments, insurance, utilities, and property taxes during renovation (typically 3-6 months)
  5. Include selling costs — real estate agent commissions (5%-6%), closing costs, and transfer taxes

The 70% Rule for House Flipping

The 70% rule is the most widely used guideline for evaluating flip deals: Maximum Purchase Price = ARV × 70% − Repair Costs.

For example, if a property has an ARV of $300,000 and needs $50,000 in repairs, the maximum you should pay is $300,000 × 0.70 − $50,000 = $160,000. This leaves room for profit, holding costs, and selling expenses.

Frequently Asked Questions

What is a good profit margin for a house flip?

Most experienced flippers target a net profit margin of 10% to 15% of the After Repair Value (ARV). On a $300,000 ARV property, that's $30,000 to $45,000 in net profit after all costs.

What costs do most new flippers forget?

The most commonly overlooked costs are holding costs (mortgage, insurance, and utilities during renovation), selling agent commissions (5%-6% of sale price), transfer taxes, and a contingency budget of 10%-20% for unexpected repairs.

Is this house flip calculator free?

Yes, the house flip calculator is completely free to use with no signup required. It is part of the Real Estate Investment Calculator suite which also includes tools for rental property analysis, BRRRR strategy, mortgage payments, and more.