Debt Service Coverage Ratio: Formula and Examples

The DSCR formula in plain terms

DSCR equals net operating income divided by total debt service. Debt service is all principal and interest payments due in the period.

The formula is short: DSCR = net operating income / total debt service.

Net operating income is what the business earns from operations before debt payments and, in most lender models, before income taxes. Many underwriters start from net profit and add back interest, depreciation and amortization. Total debt service is every scheduled loan, lease and financing payment in the same period, not only the one you are applying for.

Use the same period on both sides. Twelve months of income against twelve months of payments works well.

A worked example with round numbers

If a business earns $120,000 in operating income and owes $80,000 a year in debt payments, its DSCR is 1.5.

This example is illustrative. A landscaping company shows $120,000 of operating income. It pays $4,000 a month on an equipment loan ($48,000 a year) and $2,000 a month on a vehicle loan ($24,000 a year). Total debt service is $72,000.

$120,000 divided by $72,000 is about 1.67. Now the owner wants a new $60,000 loan with $1,500 monthly payments, adding $18,000 a year. Debt service becomes $90,000, and DSCR drops to about 1.33. The owner can see before applying whether the new payment still leaves breathing room.

How to read the result

Under 1.0 means income does not cover payments. At 1.0 you break even on debt. Above 1.0 gives a cushion, and many traditional lenders look for a margin well above it.

Thresholds differ by lender and product, so treat these as general guidance and not a rule. SBA and bank underwriters tend to look at DSCR closely. Funders that price on cash flow and bank deposits often care more about daily balances and revenue trend.

Why revenue-based products look at it differently

Cash-flow funders mostly judge deposits and balances, not a formal DSCR. Still, running your own DSCR shows whether the payment is safe.

Not every funder asks for a DSCR calculation. With revenue-based financing or working capital, the review usually centers on your monthly deposits, how consistent they are, and existing obligations visible in your bank statements.

That does not make DSCR irrelevant. If a daily or weekly payment eats most of your free cash, a good approval can still be a bad decision. Run the ratio on your own numbers first, using the payment schedule in the offer.

Ways to improve your ratio

You raise DSCR by increasing operating income, lowering debt payments, or both. The quickest lever is usually lengthening a term or paying off a small expensive debt.

• Pay off or consolidate small high-payment debts. Removing a $900-a-month obligation can lift the ratio more than a modest revenue gain.
• Extend the term on new financing. A longer term lowers each payment, though it can raise total cost.
• Raise margins. Price, supplier terms and waste reduction all show up in operating income.
• Time the application. Apply after a strong quarter, not in the middle of a dip.
• Clean up your books. Add-backs only count if your statements support them.

Our cash flow management guide covers the operating side in more detail.

Common calculation mistakes

The usual errors are mismatched periods, leaving out smaller obligations, and counting income that will not repeat.

Check that income and payments cover the same twelve months. Include every recurring payment: equipment leases, vehicle loans, existing advances and credit lines, not only the big one. Leave out one-time income such as an insurance payout or the sale of an asset, because it will not repeat.

Be consistent about owner pay. If you take a salary, decide whether to deduct it before calculating coverage, and use the same approach when you compare scenarios. A different treatment can swing the ratio by a surprising amount.

Finally, do not forget seasonality. A ratio computed from your best quarter overstates what you can carry in a slow one. Run the numbers for your weakest three months too. If the ratio still holds above 1.0 there, you have a financing plan that can survive a bad stretch.

Using DSCR before you take new money

Add the proposed payment to your current debt service and recalculate. If the ratio falls near 1.0, reduce the amount or choose a longer, lighter structure.

This takes ten minutes and prevents most overborrowing. List every monthly payment you carry. Add the offer's payment, converted to a monthly equivalent if it is daily or weekly. Divide your average monthly operating income by that total.

ROI Funder builds this payback thinking into every file: what the funds will produce, what they cost, and what the payment looks like each month. If you want to see real options, the application takes a few minutes and uses a soft credit pull, with no obligation to accept.