Rental property

BRRRR Investment Calculator

Estimate cash left in a buy-rehab-rent-refinance-repeat project. Replace every default with figures that apply to your property and location.

What this calculator estimates

Estimate cash left in a buy-rehab-rent-refinance-repeat project. It combines the inputs below to produce Cash left in project. Every assumption remains editable so the estimate can reflect the property, financing and location being evaluated.

Worked example

Using the displayed sample assumptions, the calculator produces $30,000. This is an illustration, not a market quote. Change one input at a time to understand what drives the result.

Inputs and assumptions

• Purchase price — sample input: 250000 currency units
• Rehabilitation cost — sample input: 60000 currency units
• Purchase and holding costs — sample input: 15000 currency units
• After-repair value — sample input: 400000 currency units
• Refinance loan-to-value — sample input: 75 %
• Refinance costs — sample input: 5000 currency units

How to interpret the result

Review cash flow together with reserves, vacancy and financing risk. Compare a conservative case with an expected case and keep a record of the assumptions used.

Common mistake to avoid

Do not treat gross rent as net operating income. Local definitions, taxes, lending practices and measurement requirements can materially change the result.

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Reviewed 2026-09-08.