Cash-on-Cash Return Calculator for Rentals
Cash-on-cash return on a rental: first-year cash flow, after vacancy, costs and loan payments, against down payment, cash closing and other upfront cash.
What This Calculator Does
You get a single percentage: the cash your rental throws off over its first 12 months of operation, measured against all the money you had to bring in at the start. Your down payment and any closing costs settled in cash are part of that pot. So is money for setup work, furnishings and reserves. Enter rent as the scheduled gross figure, ahead of any vacancy or collection loss, and load your entire monthly cash budget. The result is nominal and before income tax. It ignores appreciation and resale.
Who Is This For
It suits people buying a rental, owners of one, and real estate professionals who want to examine a single year's cash budget. Enter what actually left your account upfront. Rent, loss, expenses and loan terms are your own assumptions. What comes out is no final word on taxable profit, loan approval or guaranteed earnings.
How It Works
Enter the purchase price first, then the down payment, any closing costs you cover in cash and other money you pay upfront. Next comes gross monthly rent, vacancy and each monthly expense; type 0 where an item doesn't apply. With a mortgage, add a fixed annual rate and pick the 10, 15, 20, 25 or 30-year option. Paying cash? Make the down payment match the purchase price and leave rate and term empty. Then compare cash needed upfront, cash flow by month and by year, plus the annual return.
Frequently Asked Questions
What is the return number actually measuring?
It's your annual cash-on-cash return. Begin with the rent cash remaining over the first 12 months of operation once the vacancy, cash costs and principal and interest you entered are paid. Divide that by everything you put in upfront, then multiply by 100. Cap rate and IRR are different measures. So are tax profit and a property's overall return. Price gains, resale money and equity you build as the loan balance drops don't count. Every number reflects a nominal scenario of your own, not a promised yield or a yardstick for every investment.
Why count upfront cash beyond the closing costs?
Because those dollars are real even when they never appear on a closing statement. Setup work, furniture and reserves you commit all qualify. Take a $500,000 price with $100,000 down, $20,000 in cash closing costs and $30,000 more to get started. Gross rent is $4,500 with 5% held back for loss, expenses are $900 monthly, and a hypothetical 30-year note carries 6.5%. After a year you keep roughly $10,160.73, close to 6.77% on $150,000 invested upfront. Leave out the $30,000 and the figure becomes 8.47% on $120,000. Financed costs, deposits credited back to you and anything already counted stay out.
Which rent goes in: scheduled gross or what you collect?
Scheduled gross rent, before any vacancy or collection loss. At $4,500 gross with a 5% loss, the allowance is $225, so effective rent is $4,275 a month. Type $4,275 instead and the 5% comes off again, leaving $4,061.25. Take the loss once, and don't enter it again as a cash expense. A confirmed 0 for gross rent or 0% for loss works fine; a blank field is not the same as entering zero.
What changes when I buy with all cash?
Your down payment becomes the whole price, and loan principal and payments both sit at 0. Rate and amortization term drop out. Example: $500,000 paid in cash, $20,000 to close, $30,000 in other startup cash. Gross rent of $4,500 a month, a 5% loss allowance and $900 in monthly costs produce $40,500 per year. Measured against a $550,000 base, that's about 7.36%. That isn't automatically the cap rate. Startup cash and your cash allowances can pull it away from what price and NOI alone would give.
Why is there no return when I put zero cash upfront?
Because the formula divides by upfront cash; here there isn't any. A rent surplus doesn't fix that. Suppose you finance a $500,000 purchase completely at 6.5% for 30 years, pay zero at closing and add no other startup cash. Rent is $4,500, vacancy 5%, costs $900. You'd net roughly $2,575.92 a year, while the screen shows no percentage at all. Read it as undefined: neither 0% nor infinite. Weigh this deal on its cash flow instead. Whether zero-down financing or a closing with no costs is really obtainable is a separate question.
What happens with negative cash flow versus exactly zero?
If you've invested upfront cash, a negative annual cash flow shows up as a negative return. It also means the property needs money from you to keep going. Cash flow of exactly $0 produces 0%. Try it: $300,000 price, $60,000 down, $10,000 in closing costs, $5,000 of other startup cash. Set a 0% 10-year loan, $3,000 rent, vacancy at 0 and costs of $1,000. The $2,000 monthly loan payment eats the rest, so you land at $0 and 0% on $75,000. Consider that 0% rate a test value, not a rate you'd be offered. The label reads the exact cash flow rather than the rounded number displayed.
What should the monthly cash budget include?
Every recurring cost, entered a single time. Begin with property tax, followed by premiums for homeowners, wind, flood and mortgage insurance. Then come association dues, repairs, management, and the reserves and allowances you really keep setting aside. Principal and interest stay out, since the calculator works them out from your loan terms. Vacancy is deducted already. Upfront capital never goes back in. Money parked in reserves at purchase adds to the cash you invested, not automatically to monthly costs. The subtotal before debt service just reflects the allowances you enter. It is neither standardized bookkeeping nor a lender's NOI, and the calculator doesn't test whether costs are tax-deductible or reserves are sufficient.
Does the loan term change the period the return covers?
No: the return window is always the first 12 months. Choosing 15 or 30 years describes the loan and shifts the monthly payment, not how long the investment is measured. The calculator works payments out precisely from the fixed note rate. That rate isn't an APR, and the result isn't a lender's rounded statement. Annual cash flow and return are built from unrounded numbers. You can't get a lifetime return by multiplying a rounded monthly figure, or the annual percentage, by the years of the loan. Rent increases, partial-year proration, inflation and a sale aren't modeled. Neither are NPV/IRR, tax math or a lender's review.