Rental property

Required Rent Calculator

Find the monthly rent required to cover costs and reach a target cash flow after vacancy.

What this calculator estimates

Find the rent needed to reach a cash-flow target. It combines the inputs below to produce Required monthly rent. 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 $3,526. This is an illustration, not a market quote. Change one input at a time to understand what drives the result.

Inputs and assumptions

• Monthly mortgage payment — sample input: 1900 currency units
• Monthly operating expenses — sample input: 900 currency units
• Monthly capital reserve — optional — sample input: 250 currency units
• Target monthly cash flow — optional — sample input: 300 currency units
• Vacancy allowance — sample input: 5 %
• Monthly other income — optional — sample input: 0 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.