Debt service coverage ratio (DSCR) equals net operating income divided by total debt service over the same period. Above 1, operating income covers the payments; below 1, it doesn't. Ivyview Lenders, a small-business funding broker in Greenville, North Carolina, explains where each input comes from and how lenders adjust it. Each lender sets its own minimum and method.
| Formula | DSCR = net operating income ÷ total debt service |
|---|---|
| Same period | Both figures cover the same months, usually a year |
| Reading it | Above 1: payments covered with room left; 1: just covered; below 1: not covered |
| Minimums | Set by each lender; Ivyview Lenders does not publish one |
| Tool | Formula only; the payment on a proposed loan comes from our loan calculator |
The formula
- DSCR = net operating income ÷ total debt service
- Net operating income (NOI) = the cash the business generates from operations before any debt payments
- Total debt service = all principal and interest due over the same period, including any proposed new payment
Both numbers must cover the same span of time. Lenders usually work with a full year, either the last tax year or the most recent twelve months, so that a strong or weak season doesn't distort the picture.
Step 1: find net operating income
Most lenders don't take a single line from your statements. They start from the business's net income and add back items that reduced profit on paper without using cash, or that relate to the debt itself:
- Start with net income: the bottom line of the profit and loss statement, or the business's income on its tax return.
- Add back interest expense. It is part of debt service, so leaving it in income would count it twice.
- Add back depreciation and amortization, which are accounting charges rather than cash leaving the account.
- Consider one-time items, such as a single large repair or an insurance recovery. Some lenders adjust for these and some don't; write down what you adjusted and why.
The result is close to what accountants call EBITDA, earnings before interest, taxes, depreciation and amortization, though lenders differ on taxes and on owner pay. If you draw an unusually high or low salary, expect a lender to ask about it, since owner compensation changes the income figure.
From a tax return
Lenders who work from returns use the same logic: begin with the business income reported on the return, then add back the interest, depreciation and amortization shown in the return's deduction lines and schedules. Pass-through businesses report income differently from corporations, so ask your accountant which line is the starting point for yours.
Step 2: add up total debt service
Debt service is every scheduled principal and interest payment over the period. The quickest way to get it right is a business debt schedule: take each obligation's monthly equivalent payment and multiply by twelve. Include:
- Term loans, equipment loans and vehicle loans
- Required payments on lines of credit
- Equipment leases, which many lenders count as fixed obligations
- Remittances on any merchant cash advance. An advance is not a loan, but its debits leave the same account
- The payment on the funding you are applying for. The loan payment calculator gives the monthly figure to multiply by twelve
Leaving out the proposed payment is the most common mistake. The question a lender is asking is whether income covers the debts after the new one is added.
Step 3: divide and read the result
Divide net operating income by total debt service. The answer is a ratio, not a percentage:
| Result | What it means |
|---|---|
| Above 1 | Operating income covers all debt payments, with something left over |
| Exactly 1 | Operating income covers the payments with nothing to spare |
| Below 1 | Operating income does not cover the payments; the gap has to come from somewhere else |
The cushion above 1 matters because income moves. A business whose ratio sits just above 1 has little room for a slow month or a rate change. Each lender decides how much cushion it wants, and that minimum can vary with the product, the industry and the collateral. Ivyview Lenders doesn't publish a minimum, because there isn't a single one.
Global DSCR: when the owners' finances are included
For many small businesses, lenders also calculate a global ratio. It combines the business's operating income with the owners' personal income, and the business's debt service with the owners' personal debt payments, such as a mortgage or car loan. The idea is that owners who guarantee the debt are part of the repayment picture. If you are asked for personal tax returns and a personal financial statement, this is often why.
Why your ratio may differ from a lender's
- Different add-backs. One lender adds back a one-time expense; another doesn't.
- Different period. Last year's return versus the most recent twelve months can tell different stories, especially for a growing or seasonal business.
- Different debts counted. Lenders vary on how they treat leases, lines of credit with no balance, and advances.
- Owner pay and distributions. Some lenders subtract distributions the owners take out of the business.
- A different proposed payment. If the lender's term or rate differs from what you assumed, so does the debt service.
None of this means your own calculation is wasted. Working through it shows you which numbers drive the result and which questions to expect.
Improving the ratio honestly
The ratio rises when operating income rises or debt service falls. In practice that can mean waiting until a stronger year is on the books, paying off or refinancing a small obligation first, asking for a smaller amount, or a longer term that lowers the payment, at the cost of more total interest. It never means leaving a debt off the schedule; lenders see every payment on the bank statements.
Where Ivyview Lenders fits
We don't set coverage requirements and can't predict a decision. We can help you put the inputs together and talk through which funding types suit the numbers. For the other questions lenders ask, read what lenders look for; for a business with little history to measure, see funding a new business in North Carolina.
By Ivyview Lenders · Updated