What Is a BRRRR Calculator?
A BRRRR calculator is a financial modeling tool that helps real estate investors analyze the full cycle of a Buy, Rehab, Rent, Refinance, Repeat deal before committing capital. It takes your acquisition numbers, renovation budget, expected rental income, and refinance terms, then shows you whether the deal achieves the ultimate BRRRR goal: full capital recovery.
Every step of the BRRRR strategy matters, but the refinance is the make-or-break moment. This is when the numbers either confirm your deal was a success or reveal a gap. If your new loan amount exceeds what you have invested, you get all your cash back and can immediately redeploy it into the next deal. If it falls short, capital stays trapped in the property and your ability to repeat the cycle slows down.
A good BRRRR calculator does more than basic arithmetic. It models your Debt Service Coverage Ratio (DSCR), which determines whether you qualify for permanent financing in the first place. It calculates monthly cash flow and cash-on-cash return so you know the property actually performs as a rental after refinancing. And it shows you how sensitive the deal is to changes in ARV, rates, and LTV so you can stress-test before you buy.
How to Use a BRRRR Calculator
Using the BRRRR calculator starts with entering your deal inputs in three groups.
Current Deal inputs capture your acquisition: purchase price, rehab cost, After Repair Value (ARV), hard money balance, hard money interest rate, loan term, and origination points. These numbers define the front end of your BRRRR — what you are buying, what you are spending, and what the property will be worth when work is complete.
New Permanent Loan inputs define your refinance: loan type (DSCR, conventional, or FHA), loan-to-value percentage, interest rate, and loan term. DSCR loans are the most common refinance path for BRRRR investors because they qualify based on property income rather than personal income and allow LLC ownership.
Rental Income inputs complete the picture: monthly gross rent, annual property taxes, annual insurance, monthly HOA, property management percentage, and vacancy rate. These determine your net operating income, which drives the DSCR calculation and your monthly cash flow after refinancing.
The calculator then outputs the numbers that matter most. Cash out at refinance tells you how much capital you recover. DSCR confirms whether the deal qualifies for permanent financing. Monthly cash flow shows what the property earns after all expenses and the mortgage payment. Cash-on-cash return measures the annual return on whatever capital remains in the deal. And the verdict badge gives you an instant green, amber, or red signal on whether the deal achieves full recovery, partial recovery, or cannot refinance.
BRRRR Calculator Example
Here is a worked example using realistic numbers. You find a distressed property listed at $200,000 in a neighborhood where comparable renovated homes sell for $350,000. You estimate $60,000 in rehab costs. Your hard money lender offers $160,000 at 12% interest for 12 months with 2 origination points. You bring $100,000 in cash to cover the remaining purchase price and the full rehab budget.
Total project cost: $200,000 + $60,000 = $260,000.
After rehab, the property appraises at $350,000. You refinance into a DSCR loan at 75% LTV and 7.5% interest on a 30-year fixed term.
New loan amount: $350,000 × 75% = $262,500.
Cash out at refinance: $262,500 − $160,000 hard money payoff = $102,500. Your total cash invested was $100,000 (the gap between purchase price plus rehab and the hard money loan). You recover all of it plus an extra $2,500.
The new monthly P&I payment on $262,500 at 7.5% over 30 years is approximately $1,836. With $2,400 monthly rent, property taxes of $4,200 per year, insurance at $1,400, 8% property management, and 5% vacancy, the DSCR comes in at approximately 1.05x — clearing the 1.0 minimum required by most DSCR lenders.
The verdict: full capital recovery. You have your $100,000 back, the property cash flows positively each month, and you can immediately deploy that capital into your next BRRRR deal. This is how investors scale from one rental to a portfolio of ten or more using the same pool of capital.
Run these numbers yourself with your own deal inputs.
Open the BRRRR Calculator →Free vs Paid BRRRR Calculators
Several platforms offer BRRRR calculators, but most come with restrictions. BiggerPockets locks their rental property calculator behind a Pro membership at $39 per month or $390 per year. You cannot even run a single analysis without paying. DealCheck offers a limited free tier that restricts you to 3 active deal analyses before requiring a paid plan. Other tools like Rehab Valuator and FlipperForce bundle BRRRR analysis into project management software starting at $49 per month.
The RefiYourHardMoneyLoan calculator is completely free with no signup, no account creation, and no limits on the number of calculations you run. It focuses specifically on the refinance step that most BRRRR calculators gloss over, providing detailed DSCR analysis, a scenario tester with adjustable sliders for ARV, rate, LTV, and rent, and a hard money cost comparison showing exactly how much you save by exiting into permanent financing. For most BRRRR investors evaluating whether a deal achieves full capital recovery, this is the only calculator you need.
For a complete walkthrough of the BRRRR strategy itself — from finding deals to executing the repeat — read our full BRRRR strategy guide.