Flippin' Calculator

Reverse-engineers your maximum acquisition price from ARV, rehab cost, and financing terms. The core underwriting calculator for every flip.

Open tool tools.solohouseflipper.com

What It Does

Works backward from your After Repair Value to tell you the most you can pay for a property and still hit your target return. You plug in ARV and rehab cost; it spits out your Acquisition Price (AP), total cash needed, projected profit, and annualized return. The Advanced panel lets you dial in rate of return, hold time, interest rate, points, other costs, and cost of sale. It also pulls rehab cost directly from the fliporithm if you have used it, so the two calculators talk to each other.

How to Use It

  1. Enter your arv from comps research.
  2. Enter your Rehab Cost (or let it auto-fill from fliporithm).
  3. Read the red banner: that is your max purchase price.
  4. Click Advanced to adjust financing assumptions: rate of return (default 15%), hold time (default 6 months), interest rate, points, other costs, and cost of sale.
  5. Click Email Me This Report to send yourself a snapshot of the deal numbers.

When You Need This

  • Running deal analysis on a new lead before making an offer.
  • Stress-testing a deal at different hold times or interest rates.
  • Checking whether a property fits your buy box at asking price.
  • Comparing cash needed across multiple potential acquisitions.