DSCR Calculator For Investment Property
Work out the debt service coverage ratio on a rental property in a few seconds. Enter the rent it brings in, what it costs to run, and the payment on the loan — the calculator does the rest, and nothing you type is sent anywhere until you ask it to be.
How DSCR Is Calculated
DSCR is one division: the income a property produces, over what the loan on it costs for the year.
DSCR = Net Operating Income ÷ Annual Debt Service
- Net operating income
- Gross rent for the year, minus what it costs to run the property — taxes, insurance, maintenance, management and an allowance for vacancy. It does not include the mortgage payment. That is the whole point: NOI is what the property earns before financing, so the ratio can measure financing against it.
- Annual debt service
- Twelve months of payments on the loan. Some lenders count principal and interest only; others use PITIA, which folds in taxes, insurance and any association dues. The second gives a lower ratio on the same property, so it is worth knowing which one a lender means before comparing quotes.
What The Number Means
- Below 1.00
- The property does not cover its own debt. The shortfall comes out of your pocket every month.
- Exactly 1.00
- It breaks even. Every dollar of income goes to the loan, and nothing is left for a repair, a void month or a rate change.
- 1.20 to 1.25
- The range DSCR lenders commonly ask for. It leaves roughly a fifth of income as cushion above the payment.
- Above 1.25
- Comfortable cover. Stronger ratios tend to open up better pricing, more leverage, or both.
Those bands are what lenders in this market generally look for, not Nanotom Capital’s criteria — we do not price DSCR loans today. Treat them as a guide to how the ratio is read, and confirm the threshold with whoever is quoting you.
A Worked Example
A single rental at $3,500 a month:
The property earns about 23% more than the loan costs. That clears the range most DSCR lenders ask for, with room for a bad month.
- Gross annual rent$3,500 × 12
- $42,000
- Operating expensestaxes, insurance, maintenance, management, vacancy — 35% here
- −$14,700
- Net operating incomewhat the property earns
- $27,300
- Annual debt service$1,850 × 12
- −$22,200
- DSCR$27,300 ÷ $22,200
- 1.23
Questions About DSCR
- What counts as an operating expense?
- Property taxes, insurance, maintenance and repairs, property management, utilities you pay rather than the tenant, HOA dues, and an allowance for vacancy. Not the mortgage — that belongs in debt service, and counting it twice is the most common way to get this calculation wrong.
- Should I use principal and interest, or PITIA?
- Whichever the lender uses, which is worth asking before you compare offers. PITIA includes taxes, insurance and association dues in the payment, so it produces a lower ratio on the same property. Two quotes using different definitions are not comparable.
- Can a property finance with a DSCR below 1.00?
- Sometimes. Some lenders go below 1.00 where there are compensating factors — a larger down payment, strong reserves, a borrower with a track record — and price for the risk. It is not the normal case, and the shortfall is still real money out of pocket each month.
- Does DSCR replace a credit check?
- It does not replace one, though DSCR lending leans on the property rather than on personal income. Most lenders still look at credit and reserves; what they typically do not ask for is tax returns or proof of employment, which is why the product suits investors whose returns do not show the income a bank wants.
- Is a higher DSCR always better?
- Better for approval and pricing, yes. But a very high ratio can also mean you have put in more cash than the deal needed, which drags on the return. The ratio measures safety, not whether the investment is a good one.
DSCR Financing Is Coming To Nanotom Capital
It is not live yet, so there is nothing to apply for here. What we fund today is businesses — $15,000 to $5,000,000, with a decision the same day. If you are weighing a property and want to talk it through, an advisor will take the call.