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Rental investing

Cash-on-cash return calculator

Compare annual pre-tax cash flow with the down payment, acquisition costs, repairs, and reserves you commit upfront.

01 / YOUR INPUTS

Your numbers

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After operating costs, debt service, and any ongoing capital reserve.
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Your inputs stay in this browser.

02 / YOUR ESTIMATE

Annual cash-on-cash return

6.67%

Pre-tax cash income divided by the total upfront cash you commit.

Total cash committed$90,000.00
Annual cash flow$6,000.00
Average monthly cash flow$500.00
An estimate, with the working shown below.

What does this calculator do?

Cash-on-cash return measures recurring cash income relative to your own initial cash commitment. Including acquisition costs, immediate repairs, and funded reserves keeps the denominator realistic. This definition treats reserves you commit to the property as part of the initial cash investment, even if they are still held in a bank account. Use the same convention for every property you compare.

How to use it

  1. Use annual cash flow after financing and your planned ongoing reserve.
  2. Add every upfront cash contribution once, including initial funded reserves.
  3. Compare the result with a downside scenario for vacancy, repairs, and insurance.

The math, made clear

Cash-on-cash return = annual pre-tax cash flow ÷ total upfront cash committed × 100

A worked example

LET’S PUT NUMBERS TO IT

$70,000 down plus $10,000 acquisition costs, $5,000 repairs, and $5,000 reserves totals $90,000 committed cash. At $6,000 annual cash flow, cash-on-cash return is 6.67%.

What to keep in mind

Excludes appreciation, loan principal reduction, income taxes, sale proceeds, and timing within the year. It is not IRR or total ROI. Different analysts handle reserves differently; this page includes initial funded reserves in invested cash. A zero cash denominator is undefined.

All default values are illustrative. Results are rounded for display; calculations use full precision except where a split must allocate exact cents. Read our methodology for shared definitions and report a calculation issue if a result looks wrong.

Sources & data status

RentWise’s formulas and worked examples are implemented for this tool. Default amounts are illustrative, not official market statistics or live quotes. The references below explain related concepts; they do not endorse this calculator.

References checked October 17, 2026. Your lease, lender documents, local rules, or qualified adviser control transaction-specific questions. Our source and asset policy.

CLEAR ANSWERS

Questions about this calculator

Does this include appreciation?

No. Cash-on-cash measures annual cash flow relative to cash committed. Appreciation is unrealized and belongs in a separate total-return analysis.

Can the result be negative?

Yes. Negative annual cash flow produces a negative cash-on-cash return. You would need additional funds to support the modeled costs.

Why include closing costs?

They are cash you put into acquiring the investment, even though they do not reduce the mortgage balance.