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BRRRR calculator
Buy, rehab, rent, refinance, repeat. Enter the purchase price, rehab budget, after-repair value, and refinance terms to estimate the new loan, the cash the refi returns, what stays in the deal, and the monthly cash flow after the new payment.
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The short answer
Last updated: July 2026
A BRRRR deal buys and rehabs a property, rents it, then refinances at the after-repair value to pull cash back out. The new loan is ARV × refinance LTV. Buy at $200,000, rehab for $50,000, refinance a $320,000 ARV at 75% LTV, and the $240,000 loan leaves just $10,000 in the deal.
BRRRR calculator
Buy, rehab, rent, refinance — the numbers.
Enter the purchase price, rehab budget, after-repair value, and refinance terms to estimate how much cash the refi returns, what stays in the deal, and the monthly cash flow after the new loan.
Purchase price
$
Rehab cost
$
After-repair value (ARV)
$
Your estimate of what the property appraises for after the rehab. Every output below depends on it.
Refinance LTV
75%
50%
90%
Refi rate (APR)
7.00%
0%
12%
Refi term
30 yrs
5 yrs
40 yrs
Monthly rent
$
Monthly operating expenses (excl. loan)
$
Taxes, insurance, maintenance, vacancy allowance, management — everything but the new loan payment.
Input-driven result
Your inputs
Formula
Result below
Cash left in the deal
$10,000
$250,000 in (price + rehab) − $240,000 new loan. This is what stays invested.
New loan amount
$240,000
75% of your $320,000 ARV estimate.
Cash pulled back out
$240,000
Refinance proceeds returned against the cash you put in (assumes a cash purchase and rehab).
Equity remaining
$80,000
$320,000 ARV − $240,000 loan.
Post-refi monthly cash flow
$103
$2,400 rent − $700 expenses − $1,597 new loan P&I.
Estimate based on your inputs. Not a promise of results.
Estimate only — and the ARV is the assumption that drives everything. If the appraisal comes in below your number, the loan, the cash out, and the equity all shrink with it. It also assumes a cash purchase and rehab, ignores holding and closing costs, and doesn't model lender seasoning requirements.
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How it works
How this tool works.
The BRRRR strategy — buy, rehab, rent, refinance, repeat — lives or dies on one question: after the refinance, how much of your cash is still stuck in the deal? Buy and renovate well, and the new loan against the after-repair value returns most of your money to deploy again. Miss on the numbers, and your capital is trapped in a property that also has to cash-flow around a bigger payment.
This calculator runs the whole loop from your inputs: purchase price, rehab cost, your after-repair value estimate, the refinance LTV, rate, and term, and the property’s monthly rent and operating expenses. It returns the new loan amount, the cash pulled back out, the cash left in the deal, the equity remaining, and the post-refi monthly cash flow. One honest warning up front: every output leans on the ARV you type in. That is your assumption, not the tool’s — if the appraisal comes in lower, the loan, the cash out, and the equity all shrink with it.
1
Enter the purchase price, rehab cost, and your after-repair value (ARV) estimate.
2
Set the refinance LTV, rate, and term — the new loan is your ARV × the LTV percentage.
3
The tool compares the new loan to your total cash in (price + rehab) to estimate cash pulled out, cash left in the deal, and equity remaining.
4
Enter monthly rent and operating expenses to see the estimated cash flow after the new loan payment.
Make the result useful
Keep each BRRRR stage independently supportable
Buy, rehab, rent, refinance, repeat depends on purchase basis, repair scope, stabilized rent, appraisal, and lender terms. A weak assumption in one stage changes every later result.
Model cash left in the deal after refinance rather than focusing only on projected value.
The assumptions that move this result
Purchase/rehab
All cash needed to acquire and make ready.
ARV
Supportable after-repair value assumption.
Refinance terms
LTV, rate, and costs from a lender scenario.
Worked scenario
Buying at $160,000, spending $40,000, and refinancing against a $260,000 appraisal produces a very different result at 70% versus 75% LTV.
Is ARV guaranteed?
No. It requires supportable valuation.
Does it ensure refinance approval?
No. Lender underwriting controls.
Answers
Questions, answered plainly.
Why does the ARV matter so much?
Because the refinance loan is a percentage of the appraised value, not of what you spent. Every dollar the appraisal comes in below your ARV estimate cuts the loan by your LTV share of it — which directly shrinks the cash you pull out and the equity you keep. Ground your ARV in real comparable sales, and stress-test the deal at a lower number.
What does this calculator leave out?
A lot, deliberately: purchase and refinance closing costs, holding costs during the rehab (loan interest, utilities, taxes, insurance), rehab overruns, vacancy while you lease it up, and lender seasoning periods that can delay the refinance by months. It also assumes a cash purchase and cash rehab. Treat the output as a first-pass screen, not an underwritten deal.
What is a seasoning requirement?
Many lenders require you to own the property for a minimum period before they will refinance based on the new appraised value rather than your purchase price — how long varies by lender and loan program, so ask before you count on a quick refi. That wait extends your holding costs and delays getting your capital back.
Is negative cash left in the deal good?
It means the new loan exceeds your total cash in — you pulled out more than you invested, sometimes called an infinite-return position. It can be legitimate on a strong rehab, but it also means maximum leverage: a bigger payment, thinner equity, and less cushion if rent or value softens. Check the post-refi cash flow and equity lines before celebrating.
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