What is a Debt Service Coverage Ratio (DSCR)?

DSCR measures a business's ability to cover its debt payments from operating cash flow. It's calculated by dividing net operating income (or Seller's Discretionary Earnings) by total annual debt service. A DSCR of 1.00 means the business generates exactly enough cash to cover its loan payments; a DSCR of 1.25 means it produces 25% more than needed.

What DSCR do SBA lenders require for a business acquisition?

Most SBA 7(a) lenders require a minimum DSCR of 1.25x on the acquisition target. Lenders use this cushion to absorb any dip in revenue after the sale. Some lenders will stretch to 1.15x on strong deals with real estate collateral or a seller note on standby, but 1.25x is the widely accepted floor.

How do you calculate DSCR for an SBA acquisition loan?

Start with Seller's Discretionary Earnings (SDE) from the most recent tax return. Subtract CAPEX (the annual cost to maintain the physical assets) and the buyer's minimum salary requirement. Divide the result by the total annual debt service — the principal-and-interest payment on the SBA business loan plus any SBA real estate loan payment. That's your DSCR.

What is the DSCR formula?

DSCR = (SDE − CAPEX − Owner Salary) ÷ Annual Debt Service. Annual debt service is the fully amortized principal and interest payment for one year across all acquisition debt. For SBA loans, business debt typically amortizes over 10 years and real estate debt over 25 years.

Why do lenders look at three years of DSCR instead of one?

A single strong year can be an anomaly — a big one-time contract, a favorable commodity swing, or aggressive add-backs. Lenders review three years to confirm the cash flow is durable. If the most recent year clears 1.25x but prior years dipped below 1.00x, most lenders will treat it as a weaker candidate and either shrink the loan or ask for additional collateral.

How can I improve DSCR before applying for an SBA loan?

Three levers move DSCR fastest: raise SDE (defensible add-backs, verified pro-forma savings, or negotiated pricing changes), reduce loan size (larger down payment, seller note on full standby, or excluding real estate from the SBA loan), or extend the amortization when possible. Tightening operational expenses in the 12 months before the sale also helps because lenders anchor to the most recent tax return.

Does DSCR change if the SBA loan includes real estate?

Yes. Real estate loans amortize over 25 years instead of 10, which meaningfully lowers the annual debt service on that portion of the loan. A deal that fails DSCR when structured as one 10-year business loan often clears 1.25x when the real estate is broken out into a 25-year real estate loan. The DSCR calculator on this page models both loan portions.

DSCR Calculator for SBA Loans

Free Debt Service Coverage Ratio calculator — model SDE, CAPEX, and SBA loan debt service across three years to see if a business will qualify.

Most Recent Year

Cash Flow / SDE (in $)

CAPEX (in $)

Interest Rate (%)

Minimum Salary (in $)

Price of Business (in $)

Price of Real Estate (in $)

Working Capital (in $)

Down Payment (in $)

How DSCR works for SBA acquisition loans

Debt Service Coverage Ratio is the single most important underwriting metric for SBA 7(a) acquisition loans. It tells the lender — and you — whether the business you want to buy actually produces enough cash flow to comfortably cover the loan payments.

The DSCR formula

DSCR = (SDE − CAPEX − Owner Salary) ÷ Annual Debt Service

SDE is Seller's Discretionary Earnings — the true cash the business generates for its owner. CAPEX is the annual capital spend needed to keep the business running. Owner salary is the minimum you need to draw. Annual debt service is the fully-amortized principal and interest payment on the SBA loan for one year.

What DSCR do SBA lenders require?

The industry-standard minimum is 1.25x. That means the business produces 25% more cash than it needs to make its loan payments. Some lenders will stretch to 1.15x on strong deals with real estate collateral or a seller note on standby, but most will decline anything below 1.25x on the most recent year of tax returns.

A worked example

Say you're buying a $1.5M business with $50K in working capital, putting 10% down at a 10.75% SBA rate:

SDE: $400,000
CAPEX: $25,000
Minimum owner salary: $100,000
Cash available for debt service: $275,000
SBA loan amount: $1.4M, 10-year amortization → ~$233,000/yr debt service
DSCR = $275,000 ÷ $233,000 = 1.18x — below the 1.25x threshold

To get to 1.25x, you'd need to bring more equity to the deal, negotiate the purchase price down, or find defensible add-backs that lift SDE. Use the calculator above to model each scenario in seconds.

How to improve DSCR

Raise SDE with legitimate add-backs (owner perks, one-time legal fees, non-operating expenses).
Increase your down payment to shrink the loan and its debt service.
Structure a seller note on full standby — the SBA will treat it as equity, reducing your cash injection and the debt payment.
Split out real estate into a 25-year amortization instead of rolling it into the 10-year business loan.
Negotiate a lower purchase price — every $100K of price reduction cuts annual debt service by roughly $16.7K.

Ready for the next step?

Once your DSCR clears 1.25x, get pre-qualified through our free SBA loan consultation. And before you close, use the Entity Selection Tool to decide whether an LLC or S-Corp is the right holdco to acquire the business through.

DSCR Calculator FAQs

Everything buyers ask about Debt Service Coverage Ratio and SBA loan qualification

Entity Selection Tool

Get an LLC, S-Corp, C-Corp, or PC/PLLC recommendation — plus the best state to form your new business in.