BRRRR Calculator

Background.

A reader arrives at BRRRR Calculator to measure how much acquisition and rehab cash remains tied up after a refinance. BRRRR combines buy, rehab, rent, refinance and repeat; this page isolates the refinance proceeds against cash invested and debt payoff. For that reason, this page names its convention as “cash remaining = acquisition cash + rehab/holding cash − max(ARV × refinance LTV − acquisition debt payoff, 0).”

The editable entries are purchase and closing cost, rehab and holding cost, supported after-repair value, refinance loan-to-value limit, acquisition debt repaid at refinance. Use values from the document or measurement that governs this brrrr question; the defaults are only the worked fixture below. Before relying on the number, check this brrrr boundary: after-repair value, refinance LTV, seasoning, appraisal and closing costs are assumptions rather than guaranteed lender outcomes.

Fannie Mae Selling Guide B3-3.1-08, Rental Income; documented gross and net rental-income treatment documents the convention or governing rule used here. The brrrr output is a transparent scenario under those facts: it does not manufacture an unentered market price, professional determination, carrier quote, legal eligibility finding or locally adopted code value.

What is brrrr calculator?

BRRRR is the relationship behind this decision: bRRRR combines buy, rehab, rent, refinance and repeat; this page isolates the refinance proceeds against cash invested and debt payoff. On this page it means cash remaining = acquisition cash + rehab/holding cash − max(ARV × refinance LTV − acquisition debt payoff, 0). After-repair value, refinance LTV, seasoning, appraisal and closing costs are assumptions rather than guaranteed lender outcomes; that is the line between the reported quantity and a broader real estate analysis.

How to use this calculator.

1. 01Confirm that “cash remaining = acquisition cash + rehab/holding cash − max(ARV × refinance LTV − acquisition debt payoff, 0)” matches the brrrr convention you need.
2. 02Replace the fixture values for purchase and closing cost, rehab and holding cost, supported after-repair value, refinance loan-to-value limit, acquisition debt repaid at refinance with dated values from the governing record.
3. 03Keep all currencies, measurement units and time periods on the same basis before calculating.
4. 04Read cash remaining in the deal after refinance together with this boundary: After-repair value, refinance LTV, seasoning, appraisal and closing costs are assumptions rather than guaranteed lender outcomes.

The formula.

The calculation uses cash remaining = acquisition cash + rehab/holding cash − max(ARV × refinance LTV − acquisition debt payoff, 0). In this brrrr model, the entered terms are purchase and closing cost, rehab and holding cost, supported after-repair value, refinance loan-to-value limit, acquisition debt repaid at refinance. BRRRR combines buy, rehab, rent, refinance and repeat; this page isolates the refinance proceeds against cash invested and debt payoff, which is why the relationship is presented under this name rather than as a universal alternative. After-repair value, refinance LTV, seasoning, appraisal and closing costs are assumptions rather than guaranteed lender outcomes. Calculations keep full decimal precision through the relationship and round only the returned display values.

A worked example.

Frequently asked questions.

References& sources.

1. [1]Fannie Mae Selling Guide B3-3.1-08, Rental Income; documented gross and net rental-income treatment. Retrieved 2026-08-07. access: open unless marked otherwise.
2. [2]Freddie Mac, Modeling Multifamily Potential Rental Income; current rent roll, concessions and vacancy treatment. Retrieved 2026-08-07. access: open unless marked otherwise.
3. [3]U.S. Internal Revenue Service. Publication 527, Residential Rental Property. Retrieved 2026-08-07. independence: primary; access: open.
4. [4]U.S. Internal Revenue Service. Publication 946, How To Depreciate Property. Retrieved 2026-08-07. independence: primary; access: open.
5. [5]U.S. Federal Housing Finance Agency. House price index. Retrieved 2026-08-07. independence: secondary-check; access: open.