Free DSCR Calculators for Smarter Real Estate Investing
Free DSCR calculators that show whether a rental’s income can cover its debt, measured the way lenders measure it. Run purchase, refinance, BRRRR and Airbnb numbers in seconds, then compare loan options and rates.
The calculators
Four DSCR calculators, one for each type of deal
Each tool follows how lenders underwrite one specific deal: a long-term rental purchase, a refinance, a BRRRR, or a short-term rental. Pick the one that matches your plan and enter the numbers you already have.
DSCR Loan Calculator
Enter monthly rent, property taxes, insurance, HOA dues and your loan terms to see the ratio and whether the property likely qualifies for financing.
Open calculator →DSCR Refinance Calculator
See whether refinancing a rental into a new loan improves cash flow, with your new ratio, payment and potential cash-out side by side.
Open calculator →BRRRR Calculator
Model the full Buy, Rehab, Rent, Refinance, Repeat cycle, from purchase and rehab budget to refinance and cash left in the deal.
Open calculator →Airbnb DSCR Calculator
Use short-term rental income to qualify. Estimate the ratio from nightly rate, occupancy and seasonal revenue.
Open calculator →Why use these tools
Built to help you analyze and finance deals with confidence
Best DSCR has one job: give real estate investors fast, accurate numbers and a clear path to the right loan, without spreadsheets or a sales pitch.
Know your number instantly
No spreadsheets, no guesswork. Get a clear coverage number and a plain-English read on whether a deal pencils out.
Compare vetted lenders & rates
See how DSCR lenders stack up on rates, LTV and terms so you can shop with confidence, not cold calls.
Built by investors, for investors
Every calculator reflects how real DSCR underwriting works for long-term rentals, BRRRR, and short-term stays.
Always free, no account
Run unlimited scenarios without a signup, a sales call, or an email wall. Ever.
What is DSCR, and why lenders care
Debt service coverage ratio is the rent a property brings in divided by the mortgage payment it has to cover. These loans qualify the property’s cash flow rather than the borrower’s personal income, so tax returns and W-2s usually stay out of the file.
Example: $2,400 in rent ÷ $1,850 in principal, interest, taxes, insurance & HOA = a 1.30 ratio, comfortably above most lenders’ minimum.
More resources
Everything else to check before you apply
Beyond the calculators: lender comparisons, current rate research, and investor guides to help you make the call.
Numbers they trust before they ever call a lender
I underwrote three rental deals in an afternoon. The DSCR calculator told me in seconds which ones were worth a lender call.
The BRRRR calculator finally made the refinance math click. I knew exactly how much cash I’d leave in before I ever made an offer.
I run short-term rentals, and the Airbnb DSCR tool matched what my lender came back with almost to the dollar.
Three ways to use the numbers before you call a lender
Screen a stack of listings. Run each one through the loan calculator with the real tax bill and an insurance quote, and only call a lender about the deals that clear 1.0.
Plan a BRRRR before the offer. Enter the purchase price, rehab budget and expected after-repair value to see how much cash stays in the deal once the refinance closes.
Stress-test a short-term rental. Lenders often discount projected nightly income, so run the Airbnb calculator at a conservative occupancy before you trust the result.
From the guides
Learn the essentials before you borrow
Short, practical reads that pair with the DSCR calculators: what the ratio means, how the loan works, and how it compares to other ways of tapping equity.
What Is DSCR in Real Estate?
A plain-English breakdown of debt service coverage ratio: how it’s calculated, what counts as income, and the numbers lenders actually want to see.
What is DSCR: full guide →DSCR Loan vs HELOC: Which Should You Use?
Two popular ways to tap equity and grow a rental portfolio, compared on cost, qualification, risk, and which one fits which kind of deal.
Compare DSCR vs HELOC →Common questions
Frequently asked questions about DSCR calculators
What numbers do I need to run one?
Start with monthly rent, property taxes, insurance and any HOA dues, then add the loan amount, interest rate and loan term. The calculator turns the loan details into a monthly principal and interest payment, adds taxes, insurance and HOA to reach PITIA, and divides rent by that total.
What ratio do lenders want to see?
Most lenders look for 1.0 to 1.25 or higher. At 1.0 the rent exactly covers PITIA; at 1.25 it covers the payment with 25% to spare, which is where the best rates and terms usually sit. Some loan programs accept less than 1.0 in exchange for a larger down payment or a higher rate.
Does the calculation use gross rent or net rent?
Residential investment property lenders usually divide gross monthly rent by PITIA, so vacancy, repairs and management fees are not subtracted. That is the reason a property can pass the lender’s test and still lose money each month: the ratio never sees those costs, so budget them separately. A commercial loan works differently and divides net operating income by annual debt service.
How can I improve a low ratio?
Shrink the payment or raise the rent. A larger down payment, a lower rate, a longer amortization or an interest-only payment all cut the monthly debt, while a documented rent increase or an appraiser’s market rent estimate can lift income. Rerun the numbers with each change to see which one moves the result most.
Is a calculator result the same as loan approval?
No. The result is an estimate built from the numbers you enter, not a commitment to lend. Lenders confirm rent with leases or an appraisal, use their own tax and insurance figures, and set their own minimums, so treat it as a screen before you check current loan rates and request a rate quote.
Ready to see if your next deal qualifies?
Open the DSCR calculators, enter the rent and loan terms for your next property, and check the result against the 1.0 to 1.25 range before you call a lender. No signup, no cost, no sales call.