Cash on Cash Return Calculator

Measure a rental property's first-year return on the cash you actually invested.

What it does

Cash on cash return is the simplest yield measure in rental real estate. It takes the cash a property produces in a year, before income tax, and divides it by the cash the investor had to put into the deal. The output is a percentage that answers one question: how hard is my invested cash working this year?

The numerator is annual pre-tax cash flow. Start with gross rent, subtract vacancy and credit loss, operating expenses, and mortgage payments including interest and principal. What remains is the cash that reaches the investor's pocket. The denominator is total cash invested: down payment, closing costs, loan fees, and any immediate repairs or improvements paid in cash.

The measure is popular because it is direct and comparable. A property returning 8 percent cash on cash produces $8,000 a year for every $100,000 invested, and an investor can line that up against another property, a bond, or a fund without modeling a twenty-year hold. It also stays useful when the purchase is heavily financed, since the denominator reflects only the equity check rather than the full purchase price.

The default example is a $50,000 cash investment that produces $6,000 of annual cash flow. The return is 12.00 percent and the invested cash comes back in about 8.3 years if nothing changes. That last clause matters: cash on cash uses a single year, so it says nothing about rent growth, expense inflation, or what the property sells for later.

Because the ratio ignores appreciation, principal paydown, and tax treatment, it should be read next to total return measures rather than instead of them. A property with a modest cash on cash figure can still be a strong investment if the loan amortizes quickly in a growing market. A property with a high figure can be fragile if the cash flow depends on optimistic rent assumptions.

How to use

1. Add up a full year of rent actually collected, not the listed rent.
2. Subtract vacancy, operating expenses, and all mortgage payments to get annual pre-tax cash flow.
3. Add the down payment, closing costs, and any cash repairs to get total cash invested.
4. Enter both numbers and read the cash on cash percentage.
5. Compare the payback period with your expected holding period.
6. Repeat with a conservative rent and a higher vacancy rate to see how sensitive the result is.

Formula

Cash flow

Annual rent collected minus operating expenses and mortgage payments, before income tax, in dollars.

Invested

Down payment plus closing costs plus cash repairs, in dollars.

Return

Cash on cash yield as a percentage of invested cash.

Payback

Years of unchanged cash flow needed to return the invested cash, in years.

The formula uses pre-tax cash flow, so income tax is excluded on purpose. Mortgage principal paydown is also excluded from the numerator even though it builds equity, which is why cash on cash understates total return on an amortizing loan. When cash flow is zero or negative, the payback period has no finite value and the tool reports no payback.

Worked example

Reference table

Limits

• Uses a single year of cash flow, so it ignores rent growth, expense inflation, and changes in financing.
• Excludes appreciation and mortgage principal paydown, which can be a large part of total return.
• Excludes income tax, depreciation, and capital gains treatment.
• Depends entirely on the cash flow estimate, so optimistic rent or vacancy assumptions distort the result.

Common mistakes

• Using gross rent instead of cash flow after expenses and mortgage payments.
• Leaving closing costs or initial repairs out of the invested cash figure.
• Comparing cash on cash across properties with different financing levels without noting the borrowed share.
• Treating the payback period as a holding period recommendation rather than a simple break-even estimate.
• Mixing a monthly cash flow number into an annual formula without multiplying by twelve.

Try it yourself

Quick checks. Answers sit tucked under each question.

Questions

Sources

• Wharton Real Estate: Financial analysis of income properties
• Virginia Tech Pressbooks: Financial evaluation of sustainable building initiatives

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