Real Estate

Commercial Property Cash Flow Calculator

Work out a commercial property's annual cash flow from income, operating expenses, and debt service.

What this calculator does

The Commercial Property Cash Flow Calculator estimates your result instantly from the values you enter, using standard real estate formulas. Work out a commercial property's annual cash flow from income, operating expenses, and debt service. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.

Commercial Property Cash Flow Calculator

Result

—
Net Operating Income
—
Annual Cash Flow

About Commercial Property Cash Flow Calculator

The Commercial Property Cash Flow Calculator turns three annual figures into a two-step income picture: gross income minus operating expenses gives net operating income (NOI), and subtracting annual debt service gives the cash flow left after the mortgage is paid.

That two-step split matters because NOI judges the property while cash flow judges the deal with its financing attached. The calculator shows both numbers from the same inputs so you can see exactly where debt service bites.

Enter gross income, operating expenses, and annual debt service, press Calculate, and read NOI and cash flow after debt side by side.

Formula & Mathematical Calculation

NOI = Gross Income ($/yr) − Operating Expenses ($/yr)

Cash Flow After Debt = NOI − Annual Debt Service ($/yr)

Both steps use only the three fields on this form; no other inputs or assumptions are applied.

Calculation Example

A property with $150,000 in gross annual income and $60,000 in operating expenses produces an NOI of $150,000 − $60,000 = $90,000. After $45,000 of annual debt service, the cash flow left is $90,000 − $45,000 = $45,000 per year.

Key Benefits

  • Shows the two layers of property income — NOI before financing and cash flow after debt service — from one set of inputs.
  • Uses only the three annual figures you enter, with no hidden adjustments or built-in assumptions.
  • Makes the cost of debt visible: the gap between the NOI and cash-flow figures is exactly your annual debt service.
  • Formats both results in dollars with a plain-language interpretation of the subtraction.

How to Use this Calculator

  1. Enter gross income
    Type the property's total annual income in the Gross Income ($/yr) field, for example 150000.
  2. Enter operating expenses
    Type total annual operating expenses in the Operating Expenses ($/yr) field, for example 60000.
  3. Enter annual debt service
    Type the yearly mortgage principal and interest total in the Annual Debt Service ($/yr) field, for example 45000.
  4. Press Calculate
    The tool subtracts expenses from income to show NOI, then subtracts debt service to show cash flow after debt.

Assumptions & Limitations

What the calculation assumes

  • Every value you enter is treated as an exact, known amount.
  • Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
  • Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
  • Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
  • Amounts are unit-agnostic: results are returned in the same currency you enter.

What it does not cover

  • Commercial Property Cash Flow Calculator produces estimates for education and planning, not a quote, offer or professional advice.
  • Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
  • Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
  • Figures are only as accurate as the inputs you supply — check them before acting on the result.
  • For decisions with lasting financial impact, confirm the numbers with a qualified professional.

Frequently Asked Questions

NOI is the gross income you enter minus the operating expenses you enter, using exactly those two fields. Nothing else is added or removed at this step, so the figure is only as good as the two inputs.

It is NOI minus the annual debt service you enter, representing what remains each year after the mortgage is paid. If debt service exceeds NOI, the result is negative.

No. The engine computes directly from the three fields without validation branches, so it accepts whatever numbers you type, including blanks, which are treated as 0. Check your figures before trusting the output.

The NOI produced here is the numerator in the cap rate formula (NOI divided by price). This calculator stops at debt service; if you want the unlevered return percentage, carry the NOI into the commercial property cap rate calculator.

Free to use, no account needed. Calculations run in your browser, so nothing you type is sent to a server. Results are estimates — how we build and check our calculators.

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