Debt service coverage ratio counts a business loan payment your books call an expense
A lender will compute this ratio from your books whether or not you have. Here is which report and which line each term comes from, and why one common way of coding a loan payment drops the answer by a full point.
The debt service coverage ratio divides a year of cash flow available for debt service by a year of loan principal and interest, and the principal half of that payment is not on your income statement at all.
QuickBooks Online prints a subtotal called Net Operating Income on the profit and loss report, and it is not the net operating income in a lender’s debt service coverage formula, because it is struck after depreciation and after interest.
Coding a whole loan payment to one expense account and then adding back only depreciation understates the computed ratio by exactly 1.00, whatever the size of the loan.
The debt service coverage ratio a business lender computes is one year of cash flow divided by one year of loan payments, principal and interest together. Neither figure is printed on your profit and loss. The numerator has to be built from it, and the denominator is not on it at all, because only one part of a loan payment is an expense.
One thing to set aside before anything else. Mortgage lenders sell a residential product to real estate investors that is also called a DSCR loan, and it is a different thing computed a different way. Everything below is about a business borrowing against its own cash flow.
What is the debt service coverage ratio, and what is a lender testing with it?
The debt service coverage ratio divides the cash a business generated over a period by the loan principal and interest it has to pay over the same period. At 1.00 the two are equal, which means every dollar of cash the business produced would go to the loan and nothing would be left. Above 1.00 there is room. Below it, the payment is larger than what the business generated.
The test is not whether you are profitable. It is whether the cash left after running the business covers a fixed obligation that does not care how the year went. That is why the formula strips financing costs and non-cash charges out of profit before it divides, and why two businesses with identical net income can produce very different ratios.
Every version of the formula states it the same way: net operating income divided by total debt service. The trouble starts one line later. "Net operating income" is a lender’s phrase for a figure your reports do not calculate, even where your software prints a subtotal under exactly that name, and "total debt service" is a number that lives on your loan statements rather than in your ledger.
Which line of my own books does each part of the formula come from?
Each term is read off a specific report, and two of them are not on the profit and loss at all. The profit and loss supplies the numerator. The denominator comes from the balance sheet and the loan statements.
The lender’s term | The report it comes from | The line to read | What it is not |
|---|---|---|---|
Net operating income | Profit and loss, a full 12 months | Net income, then the two add-backs below | Not the subtotal labeled "Net Operating Income" if your software prints one |
Depreciation and amortization add-back | Profit and loss | The depreciation and amortization expense lines | Not money that left the business this year |
Interest add-back | Profit and loss | The interest expense line, on its own | Not the loan payment. Only the interest part of it |
Owner compensation adjustment | Profit and loss, and the equity section if you take draws | Owner salary, or draws if there is no salary | Not automatic, and not yours to decide. The lender normalizes it or does not |
Total debt service | Loan statements, every loan and card with a term | 12 months of principal plus 12 months of interest | Not on the income statement. Principal is not an expense |
Principal repaid | Balance sheet | The movement in the loan liability from opening to closing | Not an expense, and not a cost of anything |
Run it on your own books in this order.
Pull a profit and loss for a full 12 months. A calendar year, or the 12 months ending last month. A part-year report produces a ratio against a full year of payments, which is not a ratio of anything.
Start at net income, the bottom line, not at any subtotal above it.
Add back depreciation and amortization. Both are expenses on the report that no cash left the business for this year.
Add back interest expense. Interest is a financing cost, and the ratio is measuring what is available to meet financing costs, so leaving it in subtracts the same money twice.
Stop there and write the number down. That is your cash flow available for debt service.
Build the denominator from the loan statements. For every loan, line of credit and financed purchase, take 12 months of principal and 12 months of interest. Interest alone is not debt service.
Divide. The result is your ratio, and it is the same arithmetic a lender does, run on the same books.
Step 6 is the one with no obvious source, because the principal figure is not on the profit and loss at all. That is not an oversight in your bookkeeping. It is a consequence of what a loan payment actually is, and the difference between what a balance sheet counts and what an income statement counts is the whole of it.
Why is part of my loan payment missing from my profit and loss?
Because the principal part of a loan payment is not an expense, and an income statement records expenses. When you send the bank $4,833, part of it is interest, which is the cost of having the money, and part of it is principal, which is you giving the money back. Only the first part is a cost of anything.
The IRS states the tax side plainly. Publication 535, Business Expenses, 2022 edition, says that where partial payments on a debt are applied first to interest and the remainder to principal, you can deduct only the interest. The accounting side matches. FASB’s Concepts Statement No. 8, Chapter 4, issued December 2021, defines a liability as a present obligation of an entity to transfer an economic benefit. Paying down a loan settles part of that obligation. Nothing is consumed, so nothing is expensed.
So a correctly recorded loan payment lands in two places at once. The interest goes to an expense account on the profit and loss. The principal reduces the loan liability on the balance sheet. Intuit’s own documentation for QuickBooks Online, read in September 2026, describes it the same way: set the loan up as a Long Term Liabilities account with the Notes Payable detail type, then record each payment against the loan account and each interest payment to an expense account.
The bank feed does not know any of this. It sends one transaction for the full payment, every month, and a rule that codes it to a single account codes the whole thing. The error that follows has a symptom you can check in under a minute: the loan liability on your balance sheet has not moved since the day the money landed.
What happens to the ratio when the whole loan payment is coded as an expense?
It comes out exactly 1.00 lower than the same year’s books support. Not roughly, and not by an amount that depends on the size of the loan. Exactly 1.00, every time.
Here is a hypothetical set of books, run both ways. The business is the same business and the year is the same year. Only the coding differs.
Coded correctly | Whole payment expensed | |
|---|---|---|
Revenue | $980,000 | $980,000 |
Operating expenses, before depreciation and interest | $900,000 | $900,000 |
"Loan payment" expense account | nothing here | $58,000 |
Depreciation | $21,000 | $21,000 |
Interest expense | $13,000 | nothing here |
Net income as printed | $46,000 | $1,000 |
Add back depreciation | $21,000 | $21,000 |
Add back interest | $13,000 | nothing to add back |
Cash flow available for debt service | $80,000 | $22,000 |
Total debt service (principal $45,000, interest $13,000) | $58,000 | $58,000 |
Debt service coverage ratio | 1.38 | 0.38 |
Loan liability at year end | $160,000 | $205,000, unchanged |
The reason the gap is exactly one point is worth following, because it is what makes the error costly rather than merely untidy. Expensing the whole payment subtracts the $45,000 of principal that should never have touched the profit and loss, so the numerator falls by $45,000. Losing the separate interest line removes the $13,000 add-back, so it falls by another $13,000. Together that is $58,000, which is the denominator. Divide the denominator by itself and you get 1.00.
Code the whole loan payment to one expense account, add back only depreciation, and your debt service coverage ratio comes out exactly 1.00 lower than the same year’s books support.
Notice the last row too. In the miscoded column the loan still shows $205,000 at year end, because nothing ever reduced it. A lender reads that balance sheet alongside the loan statements, sees a liability that has not amortized, and now has a second question rather than a ratio.
Open your balance sheet at the start and the end of last year and look at the loan liability. If it has not come down by roughly the principal you paid over those 12 months, the payment is going to an expense account instead of being split. Your latest loan statement shows the split for every payment, so you can check it against the books in a few minutes.
What does a lender do about the way I pay myself?
A lender may normalize owner compensation to what the job would cost to hire, and that adjustment runs the other way from the loan-payment error. If you take draws rather than a salary, your pay is not on the profit and loss at all, so the profit the report shows is profit before the owner has been paid anything. A lender that substitutes a market salary is working from a lower figure than you just calculated.
This is not something to apply to your own numbers before the conversation. It is something to know is coming, so that a lower figure coming back is a normalization rather than a mystery. What you take, why, and where it lands is a separate question with its own answer, and how much to pay yourself from an LLC covers the part that is yours to decide.
Two errors, then, pointing in opposite directions. A miscoded loan payment makes the ratio read low. Owner pay sitting below the line makes it read high relative to what an underwriter will compute. Knowing which one is in your books is the difference between a number you can defend and a number you are guessing at.
What number does a lender actually require?
Ask the lender, because on a conventional loan the number lives in that lender’s own credit policy. The figures that circulate as standards on this subject are stated without a source on almost every page that carries them, and a credit policy is not a published document, so there is no way to look yours up. A number with nothing behind it is not a standard. It is a number.
Where a published requirement does exist is inside a specific federal program. The SBA sets origination policy for the 7(a) and 504 loan programs in SOP 50 10, Lender and Development Company Loan Programs. Version 8 took effect on June 1, 2025, and SBA Information Notice 5000-880695 announces SOP 50 10 8.1, effective October 1, 2026. Requirements there vary by program, loan size and transaction type, and they change between versions, so the requirement that applies to a given application is the one in the version in force when that loan gets its number. Your lender underwrites to it and can tell you which one you are being measured against.
Asking is a normal thing to do, and so is being in this position at all. The Federal Reserve’s 2025 Report on Employer Firms, drawing on the 2024 Small Business Credit Survey, found that 37% of employer firms had applied for a loan, line of credit or merchant cash advance in the previous 12 months, unchanged from 2023 and in line with prepandemic levels.
Whether the numbers support borrowing at all is a conversation with your accountant and the lender, and whoever files your return will have a view on the tax side of carrying the debt. What this article covers is making sure the numbers are the real ones before that conversation starts.
The practical version: if you expect to apply in the first quarter, the financials a lender reads are the year you are closing now. IRS Publication 583, revised December 2024, puts the standard for a set of books simply, which is that your books must show your gross income, as well as your deductions and credits. A loan payment sitting whole in one expense account overstates deductions and understates the liability, and catching it in December means reclassifying 12 payments at once instead of splitting one correctly each month.
What is a good DSCR for a business loan?
On a conventional business loan the figure that applies is the one in the credit policy of the lender you are applying to, and a credit policy is not published, so the number cannot be looked up anywhere. The thresholds repeated as standards across this subject are stated without a source on almost every page that carries them, which is why three different pages give three different numbers. Asking the lender directly is an ordinary question with a specific answer, and it is worth asking before an application rather than after. Where the loan is guaranteed under a federal program, the program’s own requirement applies on top of the lender’s, and for SBA 7(a) and 504 loans that requirement is published in SOP 50 10.
What DSCR does the SBA require?
The SBA publishes its 7(a) and 504 origination requirements in SOP 50 10, Lender and Development Company Loan Programs, and the figure that applies depends on which version is in force and on the type of transaction. Version 8 of SOP 50 10 took effect on June 1, 2025, and SBA Information Notice 5000-880695 announces the issuance of SOP 50 10 8.1, effective October 1, 2026. Coverage requirements in that document are not a single number: they differ by loan program, by loan size, and by whether the transaction is a business acquisition, an expansion or a working capital request. Because the requirement is version-specific and the versions change, the reliable way to get it is to ask the lender which version and which provision your application is being underwritten to.
How do I calculate DSCR for my business?
Take net income from a full 12 months of profit and loss, add back depreciation, amortization and interest expense, and divide the result by 12 months of loan principal plus 12 months of loan interest. The numerator is what the business generated before financing costs and before non-cash charges. The denominator comes off your loan statements rather than your profit and loss, because the principal you repay is not an expense and never appears on an income statement. A business with $46,000 of net income, $21,000 of depreciation and $13,000 of interest has $80,000 of cash flow available for debt service; against $58,000 of annual principal and interest, that is a ratio of 1.38.
What counts as net operating income?
In a lender’s debt service coverage formula, net operating income means the cash a business generated before financing costs and before non-cash charges, which in practice is net income plus depreciation, plus amortization, plus interest expense. It is not a line your bookkeeping produces for you, and it is not necessarily the same as any subtotal printed on your report under that name. A lender may also adjust it for owner compensation above or below a market salary, and for one-time items that will not recur. The adjustments are the lender’s to make; what the borrower controls is whether the underlying lines are coded correctly enough for the adjustments to be possible.
Does depreciation get added back?
Yes. Depreciation is an expense on your profit and loss that no cash left the business for during the year, so it is added back to net income when calculating cash flow available for debt service. Amortization is added back for the same reason. The point of the add-back is that the ratio measures cash available to make loan payments, and a charge that reduced profit without reducing the bank balance does not reduce what is available. The reverse holds for the item people expect to add back and cannot: loan principal is a cash payment that never appears on the profit and loss, so there is nothing there to add back and it belongs in the denominator instead.
Why are my Net Operating Income and Net Income the same on my profit and loss?
On a QuickBooks Online profit and loss, Net Operating Income is the subtotal that sits above the Other Income and Other Expenses sections, so if nothing is coded into either of those sections, there is nothing between the two subtotals and they print the same figure. Intuit’s own QuickBooks Community carries the question under that exact title, checked September 2026. For debt service coverage purposes, neither subtotal is the net operating income a lender means: both are struck after depreciation and after interest, and the lender’s figure adds those back. Xero Central’s own description of its Income Statement report defines gross profit as income minus cost of sales and net profit as gross profit minus expenses, which is the same arithmetic under different labels, and needs the same add-backs.
How much can my business borrow?
Nothing in your books answers that directly, but the ratio can be run backwards to get close. Take your cash flow available for debt service, divide it by the coverage ratio the lender requires, and the result is the annual principal and interest the books currently support, including whatever you already owe. Converting that annual figure into a loan amount depends on the interest rate and the term, which the lender sets rather than you. The useful thing about running it this way is that it names the constraint honestly: existing debt service comes out of the same number, so a business already carrying a payment has less headroom than its revenue suggests.
See what a lender would read off your books
If you ran the calculation and could not find an interest line to add back, or the loan on your balance sheet has not moved in a year, that is a coding question rather than a lending one. We can go through what your reports currently show, and what a lender computing this ratio would get from the same file.
This article explains how the mechanics generally work. It is not tax advice, and it is not a recommendation about borrowing.
Former FP&A analyst who now reads P&Ls the way other people read box scores. Covers spend patterns, margin trends, and what the numbers say before the owner notices.
