A cash on cash return calculator divides a rental property’s annual pre-tax cash flow by the cash you invested. Use the free tool below to estimate that percentage after mortgage payments, vacancy and operating expenses. It also shows a separate return after a replacement reserve, so money earmarked for a future roof doesn’t look available to spend.
By Mani teja, Investor. Educational content prepared with AI assistance. All examples are hypothetical, and the calculator uses your assumptions rather than live rates or lender underwriting rules.
Free Cash on Cash Return Calculator
Enter a full-year rental scenario in U.S. dollars. Taxes and insurance belong in operating costs, not in principal and interest. Opening reserves are included in invested cash. The annual replacement reserve is shown separately.
Calculations run in this page. No account is needed and the calculator does not save or submit your inputs. Fixed-rate monthly amortization only; no income taxes, adjustable-rate resets or second loans are modeled.
How does a cash on cash return calculator work?
Cash-on-cash return measures one year’s cash income relative to your cash investment. Subtract property operating expenses and scheduled loan payments from effective rental income. Divide the resulting annual pre-tax cash flow by total cash invested, then multiply by 100. Use the same time period and expense definitions for every property you compare.
Cash-on-cash return (%) = annual pre-tax cash flow ÷ total cash invested × 100. If you invest $80,000 and receive $6,000 of annual cash flow, the result is 7.5%. That percentage doesn’t include a sale, appreciation or the equity created by paying down principal.
Wall Street Prep’s explanation of cash-on-cash return uses annual pre-tax cash flow and an initial equity contribution. For this acquisition calculator, the denominator includes cash committed at purchase, including the opening reserve you enter. State that choice when sharing a result: a calculation excluding reserves will look higher even when the property is identical.
What the calculator includes
Monthly scheduled rent is reduced by the vacancy allowance. Other annual income is entered separately and should already reflect your collection expectations. Annual operating costs include property taxes, insurance, management, ordinary maintenance, utilities paid by the owner and association dues. They exclude debt payments and the separate replacement reserve.
The mortgage calculation assumes a fixed note rate, equal monthly principal-and-interest payments and full amortization over the entered term. An all-cash purchase has a down payment equal to the price and no mortgage payment. Interest-only periods, adjustable-rate resets, balloons, financed closing costs and additional liens require a separate payment model.
For clarity, the tool reports cash-on-cash return before the annual replacement reserve and a second, reserve-adjusted figure. Moving money into a reserve account is a budgeting allocation, not a second operating expense. When a replacement is actually paid, reconcile the reserve and cash expenditure so you don’t subtract both.
Cash on cash return calculator example: a $300,000 rental
Suppose a rental costs $300,000. You put down $75,000, pay $9,000 of closing costs, spend $6,000 on initial work and commit another $5,000 to an opening cash reserve. The total cash investment is $95,000, even though the down payment is only $75,000.
Monthly rent is $2,800, with a 5% vacancy allowance and no other income. Annual operating costs are $10,800. The $225,000 loan carries a hypothetical 7% fixed rate over 30 years. The replacement budget is another $1,800 per year, shown separately from operating costs. These are illustrative inputs, not a market rent estimate or a loan offer.
| Item | Annual amount or result |
|---|---|
| Scheduled rent: $2,800 × 12 | $33,600 |
| Vacancy allowance: 5% | −$1,680 |
| Effective rental income | $31,920 |
| Operating expenses | −$10,800 |
| Net operating income (NOI) | $21,120 |
| Principal and interest | About $17,963.17 |
| Cash flow before replacement reserve | About $3,156.83 |
| Cash-on-cash return: $3,156.83 ÷ $95,000 | 3.32% |
| Cash flow after $1,800 replacement reserve | About $1,356.83 |
| Reserve-adjusted cash-on-cash return | 1.43% |
The reserve-adjusted monthly amount is about $113.07. That’s a much smaller spending allowance than the $1,303.07 difference between rent and the mortgage payment. Taxes, vacancy and maintenance explain the gap. A rent-minus-mortgage shortcut would miss them.
Use our rental property NOI and DSCR calculation guide if you need help separating income, operating costs and financing. Keep calculations unrounded until displaying the final amounts; otherwise, multiplying a rounded monthly payment can create small annual differences.
What counts as cash invested in a rental property?
Start with the cash that leaves your control to acquire and prepare the property. Count the down payment, cash-paid closing and financing costs, initial rehabilitation and the opening reserve committed to this investment. Enter net costs after documented credits. Don’t include a seller-paid charge as though you paid it yourself.
Prepaid insurance, tax escrows and reserves need careful labeling. An opening deposit can belong in the cash-investment denominator while a year’s actual insurance or tax expense belongs in annual operating costs. They answer different questions: how much capital is tied up, and what does operating the rental cost? Avoid entering the same opening deposit under closing costs and again as a reserve.
A tenant’s refundable security deposit isn’t your equity contribution or ordinary spendable rental income. Borrowed funds also aren’t a cash gift: if another loan finances your down payment or work, its payments and costs must be included in a fuller analysis. This single-loan tool doesn’t model that arrangement.
Read the DSCR loan down-payment guide alongside the post-closing reserve requirements guide. Cash needed to close and cash that must remain afterward are separate amounts. A return estimate doesn’t establish whether either amount satisfies a lender.
Cash-on-cash return vs cap rate vs DSCR
These measures use different denominators, so a strong result in one doesn’t establish a strong result in another. Cash-on-cash return focuses on your cash. Cap rate focuses on property income before financing. DSCR tests income coverage of debt service under the chosen calculation method.
| Measure | Formula used here | Example |
|---|---|---|
| Cash-on-cash return | Cash flow before replacement reserve ÷ cash invested | 3.32% |
| Acquisition cap rate | NOI ÷ purchase price | 7.04% |
| NOI-based DSCR | NOI ÷ annual principal and interest | 1.176x |
The cap-rate figure uses purchase price, not an appraisal or all-in project cost. The DSCR figure uses NOI and principal-and-interest debt service. Some residential DSCR lenders instead divide qualifying rent by PITIA, including taxes, insurance and applicable association dues. Don’t take this tool’s NOI-based ratio as the lender’s qualifying answer.
Use the main DSCR calculator to examine both income approaches. If the loan concept is new, the DSCR loan investor guide explains how property-income financing works.
Does a larger down payment improve cash-on-cash return?
It lowers the loan payment, but it also raises your cash-investment denominator. The percentage can rise or fall. Change the down payment in the calculator while holding rent, expenses and the hypothetical rate constant. Then obtain actual quotes: lenders may price the two loan-to-value ratios differently.
For the default property bought entirely with cash, the cash commitment becomes $320,000, including the same closing costs, work and opening reserve. With no debt payment, annual cash flow before the replacement reserve is $21,120, giving a 6.60% cash-on-cash return. The result is below the 7.04% cap rate because the cash-investment denominator includes more than the purchase price.
This calculator measures cash before personal income taxes. The cost segregation and DSCR guide explains why depreciation deductions and usable tax benefits require a separate analysis; a deduction is not collected rental cash.
What is a good cash-on-cash return?
There isn’t a universal percentage that makes a rental worth buying. Your required return depends on the property’s risks, the work involved, financing, liquidity and your alternatives. A projected 10% based on unrealistic rent or missing repairs is weaker evidence than a lower figure supported by leases, insurance quotes and an actual maintenance budget.
Test the assumptions before choosing a target. On the default numbers, raising vacancy from 5% to 10% cuts annual cash flow by $1,680. The reserve-adjusted cash flow becomes approximately −$323.17, or −0.34% on $95,000 invested. A small change turns the distributable budget negative.
That stress test is deliberately simple. It holds every other input constant, rather than pretending vacancy arrives on a tidy schedule. A real turnover can also bring cleaning, leasing costs and repairs. Add those costs where appropriate and keep enough liquidity to handle the timing.
Rates matter as well. Use the dated DSCR rate reference for context, then enter the actual fixed-rate quote that matches your loan. A headline starting rate doesn’t establish your payment, points or closing costs.
What this return leaves out
Cash-on-cash return is a one-period income measure. It doesn’t capture the timing of all future cash flows, appreciation, sale costs, refinance fees or a complete after-tax outcome. Principal repayment can build equity while reducing current cash; adding it back to cash flow would change the measure you’re reporting.
Taxable rental income is another calculation. The IRS rental-income guidance discusses income reporting, expenses and depreciation. A cash reserve transfer isn’t automatically a deductible expense, and this calculator does not calculate tax deductions or tax liability. Use your actual tax treatment in a separate analysis.
Refinancing can make the denominator especially misleading. If cash-out proceeds return much of your original contribution, a percentage based on the small cash left can become very large. At zero cash invested, the ratio is undefined; the tool shows “Not defined,” not an infinite or guaranteed return. Loan proceeds aren’t operating profit. For those transactions, use a dated contribution-and-distribution schedule with the BRRRR capital-recycling guide.
How to use the result before making an offer
- Confirm income. Compare the current lease, supported market rent and likely vacancy. Enter other income net of expected collection losses.
- Replace estimates with evidence. Use tax records, insurance quotes, management terms and a repair assessment. Include a replacement budget outside ordinary maintenance.
- Match the financing. Use principal and interest only in the mortgage calculation; taxes and insurance already belong in operating costs. Count points and cash-paid fees in closing costs.
- Compare a downside case. Reduce rent or raise vacancy, then examine the monthly cash amount as well as the percentage. Decide how much additional cash you could need if that case happens.
For an existing rental, compare actual trailing-year cash flow with the forecast rather than labeling a stabilized projection as last year’s realized return. The calculator models a full year at the entered assumptions. A midyear purchase, initial lease-up or major renovation needs a dated cash-flow schedule.
Separate operating yield from borrowed distributions: If a refinance returns cash to you, don’t add that borrowed amount to annual operating cash flow when calculating cash-on-cash return. Show it as a separate financing event and identify the equity basis used for subsequent years. The BRRRR capital-recovery guide helps reconcile the before-and-after cash position.
Frequently asked questions
Does cash-on-cash return include mortgage payments?
Yes. Annual cash flow is calculated after scheduled principal and interest. This tool includes taxes and insurance in operating expenses, so don’t also include an escrow-inclusive mortgage payment.
Can cash-on-cash return be negative?
Yes. If operating costs and debt payments exceed effective income, cash flow and the return can be negative. A replacement reserve can also turn a small positive spending budget negative.
Can I use this calculator for an all-cash rental purchase?
Yes. Set the down payment equal to the purchase price. The loan balance and debt payment become zero; closing costs, initial work and the opening reserve still count toward cash invested.
Is cash-on-cash return the same as total ROI?
No. Cash-on-cash return measures annual cash flow against invested cash. A total-return analysis may also include principal reduction, changes in value, taxes, selling costs and the timing of cash flows.
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