Rental Property Calculator

Use this free rental property calculator to estimate mortgage payment, operating expenses, monthly cash flow, NOI, cap rate, and cash-on-cash return.

All tools

Formula steps Estimate limits shown Examples included Private history

Property price ($)Down payment ($)Mortgage rate (%)Loan term (years)Monthly rent ($)Vacancy reserve (%)Other monthly operating expenses ($)Annual property tax ($)Monthly insurance ($)Maintenance reserve (% of property/year)Cash closing costs ($)

Monthly shortfall-$129.35

$225,000 loan, rent less operating costs

Mortgage payment: $1,459.35
Monthly NOI: $1,330.00
Cap rate: 5.32%
Cash-on-cash return: -1.8928641553%

Formula steps

Subtract vacancy reserve and operating costs from rent to estimate NOI.
Estimate mortgage payment from loan amount, rate, and term.
Subtract mortgage payment from NOI for cash flow.
Compare NOI with property price and annual cash flow with cash invested.

How to use the rental property calculator

Enter the requested dollar amounts, rates, terms, tax settings, or contribution details.
Use rates as percentages, such as 6.5 for 6.5%, and check whether a field asks for a monthly or annual amount.
Press the calculate button to see the answer, supporting metrics, and formula steps.
Use the result as a planning estimate only, then copy it if the assumptions look right.

Common uses

Screen whether monthly rent covers estimated costs.

Estimate cap rate before financing effects.

Estimate cash-on-cash return after mortgage payment.

Compare vacancy, maintenance, and expense assumptions.

Examples

Rental house $300k property renting for $2,400/mo

Cash flow and cap rate

Condo Condo rent with higher monthly expenses

Cash-flow estimate

Higher rent $420k property renting for $3,400/mo

Return estimate

Frequently asked questions

Plain-language answers about when to use the estimate, what your numbers mean, what is left out, and how privacy works.

When should I use the Rental Property Calculator?

Use it for early planning and side-by-side comparisons, especially for tasks like these: Screen whether monthly rent covers estimated costs. Estimate cap rate before financing effects. Treat the answer as a planning estimate, not a final quote.

What is the Rental Property Calculator doing with my numbers?

In plain language: The calculator subtracts vacancy and operating expenses from rent for NOI, subtracts mortgage payment for cash flow, then compares NOI and cash flow with property price and cash invested. If the result seems too high or too low, first check whether each field expects a monthly amount, annual amount, dollar value, or percent.

What does this estimate leave out?

This does not include depreciation, income tax, repairs timing, tenant risk, rent control, property management contracts, refinancing, or local landlord rules. Real finance decisions can also depend on fees, timing, local rules, credit details, and provider-specific terms.

Does the site save my finance inputs?

No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.