What Is a Debt Service Coverage Ratio (DSCR) and How Do You Calculate It?

Your Debt Service Coverage Ratio (DSCR) is the single most important number lenders look at when deciding whether to approve your loan. It answers one question: does your business generate enough income to cover its debt payments? A DSCR of 1.0 means you earn exactly enough to pay your debts with nothing left over. Anything below 1.0 means you cannot cover your obligations. Most lenders require a DSCR of at least 1.25, meaning you earn 25% more than your debt payments require.

Key Terms Defined

• DSCR (Debt Service Coverage Ratio): The ratio of your net operating income to your total annual debt payments. It tells lenders whether your business can comfortably service its debt.
• Net Operating Income (NOI): The cash your business generates from operations before paying debt, taxes, or owner draws. Calculate it as: total revenue minus operating expenses (rent, payroll, utilities, insurance, supplies, marketing). Do not subtract loan payments, income taxes, or depreciation.
• Total Annual Debt Service: The sum of all loan principal and interest payments you owe in a year, including the new loan you are applying for.

The Formula

DSCR = Net Operating Income / Total Annual Debt Service

For example, if your business generates $150,000 in NOI and your total annual loan payments are $100,000, your DSCR is 1.50. That means you earn $1.50 for every $1.00 of debt, which is a strong position.

How to Use This Calculator

1. Enter your annual revenue. Use your trailing 12-month revenue from your profit and loss statement.
2. Enter your annual operating expenses. Include rent, payroll, utilities, insurance, supplies, and marketing. Do not include loan payments or income taxes.
3. Enter your total annual debt payments. Include all existing loan payments plus the projected payments on the new loan you are considering.
4. Review your DSCR. The calculator shows your ratio and compares it to common lender thresholds.
5. Check your maximum loan amount. The calculator reverse-engineers the largest loan you can take while maintaining a 1.25 DSCR.

What Lenders Require

| Lender Type | Minimum DSCR | |-------------|-------------| | SBA 7(a) (most lenders) | 1.25+ | | Conventional bank | 1.50+ | | Alternative/online | 1.0 to 1.25 |

• Below 1.0: Your business cannot cover its debt. The loan will be denied.
• 1.0 to 1.24: You are technically covering debt, but the margin is too thin for most lenders.
• 1.25 and above: Meets most SBA lender requirements. You are in a good position to apply.
• 1.50 and above: Strong. You qualify for most conventional bank loans and will likely get better terms.

A Real-World Example

A plumbing company brings in $400,000 in annual revenue. Operating expenses (three technicians, two trucks, insurance, rent, and marketing) total $300,000. That leaves $100,000 in NOI.

The owner wants an SBA loan with annual payments of $60,000. DSCR = $100,000 / $60,000 = 1.67. This is well above the 1.25 SBA threshold, so the loan looks approvable.

Now imagine the owner also has an existing equipment loan with $20,000 in annual payments. Total debt service becomes $80,000. DSCR = $100,000 / $80,000 = 1.25. Still meets the minimum, but there is no room for a revenue dip. One slow quarter could push the ratio below 1.25.

How to Improve Your DSCR Before Applying

1. Increase revenue. Even a 10% revenue bump moves your DSCR significantly.
2. Cut non-essential operating expenses to increase NOI. Renegotiate vendor contracts, reduce waste, or eliminate underperforming marketing spend.
3. Extend your loan term. A longer term reduces annual payments and improves DSCR, though you will pay more interest over the life of the loan.
4. Shop rates from multiple lenders. Even a small rate reduction lowers your annual debt service.
5. Pay down existing debt before applying. Reducing current obligations creates room for new borrowing.

What This Means for Your Business

Your DSCR is not just a loan approval number. It is a measure of financial health. A DSCR of 1.25 means you have a 25% cushion above your debt obligations. If revenue dips 20%, you can still make your payments. A DSCR of 1.05 means one bad month could put you in default.

Before applying for any financing, run your numbers through this calculator. If your DSCR is below 1.25, focus on improving it before submitting an application. A rejected loan application stays on your record and can make future applications harder.

Your DSCR connects directly to your loan payments and cash flow forecast. Make sure your cash flow projection shows you can maintain this DSCR over the full loan term, not just today.