Financial / Browser calculator

Rental Property Calculator

Rental Property Calculator works from the inputs you provide and returns net operating income, cap rate (%), annual cash flow, cash-on-cash return (%). Use the calculation panel to explore a scenario, then check the formula and limitations before applying the result.

Your inputs

Minimum: 1e-06
Minimum: 0
Minimum: 0 · Maximum: 100
Minimum: 0
Minimum: 0
Minimum: 1e-06

Your results

Enter your values and calculate to see the result.

This estimate is for information and comparison, not financial, investment or tax advice.

Formula and calculation method

NOI = annual rent × (1 − vacancy rate) − operating costs. Cap rate = NOI / price. Cash-on-cash return = (NOI − debt payments) / cash invested.

Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.

How to use rental property calculator

  1. Set Property purchase price. The example below uses 250000.
  2. Set Monthly gross rent. The example below uses 2000.
  3. Set Vacancy allowance (%). The example below uses 5.
  4. Set Annual operating costs. The example below uses 6000.
  5. Set Annual debt payments. The example below uses 12000.
  6. Set Cash invested. The example below uses 60000.
  7. Select Calculate to update the result. Reset restores the illustrated inputs. Copy, print or download your own result if you need a record.

Worked example

Example inputs
Property purchase price
250000
Monthly gross rent
2000
Vacancy allowance (%)
5
Annual operating costs
6000
Annual debt payments
12000
Cash invested
60000
Net operating income
16800
Cap rate (%)
6.72
Annual cash flow
4800
Cash-on-cash return (%)
8

Factors affecting your result

Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.

Changing property purchase price changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same unit and period. A precise arithmetic result does not make an uncertain assumption precise.

Frequently asked questions

How does the rental property calculator work?

NOI = annual rent × (1 − vacancy rate) − operating costs. Cap rate = NOI / price. Cash-on-cash return = (NOI − debt payments) / cash invested.

What inputs does Rental Property Calculator need?

Enter property purchase price, monthly gross rent, vacancy allowance (%), annual operating costs, annual debt payments, cash invested. Read the unit labels; percentages are entered as ordinary percentages, not decimal fractions.

How should I interpret the rental property calculator result?

Use consistent units for all comparable inputs. The displayed result is rounded; arithmetic is performed with the full available numeric precision. Check your source measurements before relying on the result.

Are my rental property calculator inputs uploaded?

No. The calculation runs in this browser. Favorites, recent tool names, theme and formatting preferences may be saved locally, but calculation inputs are not sent to a calculation server or stored by this website. Shared links do not include entered values.

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