Empowering Real Estate Investors
with Precise Property Math
RunMyFlip was built to eliminate guesswork from real estate acquisitions — giving active flippers, wholesalers, landlords, and private lenders institutional-grade underwriting tools at no cost.
Our Mission
Our mission is to democratize institutional real estate underwriting. Professional deal analysis software costs thousands of dollars per year and locks investors into subscriptions. We believe every real estate investor — from a first-time house flipper in Atlanta to a seasoned portfolio builder in Phoenix — deserves access to the same mathematical frameworks used by private equity firms and hard money lenders.
RunMyFlip provides a free, comprehensive suite of investment calculators built on transparent, field-tested formulas. We cover the full lifecycle of a real estate deal: from initial acquisition analysis and Maximum Allowable Offer (MAO) calculation, through renovation budgeting, rental underwriting, long-term refinance modeling, and wholesale contract structuring.
Every tool is built with one non-negotiable principle: calculator math runs in your browser. Saved deals use browser storage. Optional AI features send submitted details for processing, and optional checklist requests send your email. Read our privacy policy for details.
Five Free Calculators. One Investor Portal.
Each tool in our suite targets a distinct investment strategy with purpose-built formulas, real-time reactive outputs, and printable underwriting reports.
Fix & Flip Profit Calculator
Compute Net Profit, ROI, and 70% Rule MAO instantly. Includes holding costs, hard money points, buying/selling commissions, and a live break-even tracker.
Open free toolDSCR Loan Calculator
Underwrite non-QM commercial rental loans without W-2s. Calculates monthly PITI, Debt Service Coverage Ratio, lender qualification tier, and interest-only savings.
Open free toolBRRRR Strategy Calculator
Model the Buy-Rehab-Rent-Refinance-Repeat strategy. Tracks capital recaptured, cash left in deal, post-refi cash flow, and the infinite return milestone.
Open free toolRehab Cost Estimator
Itemized renovation budgeting with Light/Medium/Heavy Gut presets, per-trade overrides (kitchen, HVAC, roofing, baths), and a 5-30% contingency buffer slider.
Open free toolWholesale MAO Calculator
Reverse-engineer seller contract MAO and assignment fee spread from the end-buyer's ARV, rehab estimate, desired profit, and holding costs.
Open free toolTransparent Tools for Investment Scenarios
Holding time, financing terms, and overlooked closing fees can change a deal's estimated profit. RunMyFlip brings those inputs together so you can compare scenarios, inspect the assumptions, and test a downside case before making an offer.
Calculators use the inputs you enter and the formulas explained on each tool page. Defaults are illustrative assumptions, not current quotes or lender approval criteria. Blog drafts may use AI assistance; a named reviewer is shown only when a reviewer has been recorded. We do not claim that every guide has been reviewed by a licensed professional.
- Calculator math runs in your browser; optional AI features process the details you submit
- Zero required signup, account creation, or email submission
- Transparent mathematical formulas, not black-box algorithms
- Multi-currency support for international investors
- Printable PDF underwriting reports for lenders and partners
- Editable assumptions so you can use current local quotes and lender terms
Editorial Methodology & Disclaimer
All financial formulas, calculators, and editorial content published on RunMyFlip are intended exclusively for educational and informational scenario analysis. The results produced by our tools represent mathematical estimates based on the inputs you provide and do not constitute certified real estate appraisals, legal advice, tax opinions, or investment recommendations.
Real estate values, renovation costs, interest rates, and market conditions change constantly. Actual investment outcomes will differ from calculated estimates. Always consult licensed real estate brokers, certified appraisers, tax professionals, and qualified lenders before making any acquisition decision.
Read our editorial standards and corrections policy for how we handle sources, illustrative examples, AI assistance, and reported errors. Where a guide lacks a source for a market figure, verify that figure against current local data before using it.