Blog · Finance metrics and formulas · Finance and FP&A teams
Interest coverage compares earnings before interest and taxes with interest expense. Build the ratio from a P&L export, reconcile the numerator, and separate earnings changes from borrowing costs.
The interest coverage ratio is EBIT divided by interest expense for the same reporting period. It shows how many times earnings before interest and taxes cover the interest charge, while leaving principal repayments and cash conversion for separate checks.
Interest coverage ratio = EBIT / Interest expense
EBIT = Net income + Income tax expense + Interest expense, under the simple earnings convention illustrated here.
The Federal Reserve's research on corporate interest coverage defines ICR using EBIT and same-year interest expense. The result is a multiple, usually written with an x, rather than a percentage.
Use the earnings convention that the report actually specifies. If the statement has interest income or other nonoperating items, preserve a reconciliation instead of assuming operating income and EBIT are identical. The SEC's guidance on EBIT and EBITDA, questions 103.01 and 103.02, starts earnings with GAAP net income and distinguishes these measures from operating income.
Interest expense is an income statement charge. It can differ from interest paid because of accruals, noncash interest, or financing-cost amortization. Do not replace it with a bank payment total halfway through a trend. If management needs a cash-interest version, show that version alongside the original and name its inputs.
Export account-level amounts with the fiscal period, entity, account code, account description, and reporting currency. Map revenue and expense accounts to the same categories each period. Keep expense amounts positive in the calculation table, even if the ledger export uses debits and credits with different signs.
You need net revenue, cost of goods sold, operating expenses, depreciation and amortization, interest expense, income tax expense, and net income. Depreciation may already be spread across production costs and administrative accounts; identify it without deducting it again.
The financial ratios overview puts interest coverage among the broader tests of financial strength. Here the narrower job is to prove the earnings numerator and explain its movement. A balance-sheet solvency ratio answers a different question about the company's financing position.
Consider a fictional US industrial distributor, Cedar Supply, with comparable fiscal years ending December 31. The separate depreciation row below means COGS and other operating expenses exclude that charge. All amounts are USD; multiples are shown to two decimal places, and percentage changes to one decimal place.
| P&L row or calculation | 2025 (USD) | 2026 (USD) |
|---|---|---|
| Net revenue | 12,000,000 | 12,600,000 |
| Less: cost of goods sold, excluding depreciation | 7,200,000 | 7,560,000 |
| Less: other operating expenses, excluding depreciation | 2,700,000 | 3,240,000 |
| Less: depreciation and amortization | 600,000 | 600,000 |
| EBIT: revenue less the three expense rows | 1,500,000 | 1,200,000 |
| Less: interest expense | 300,000 | 400,000 |
| Less: income tax expense | 300,000 | 200,000 |
| Net income: EBIT less interest and tax | 900,000 | 600,000 |
| Interest coverage: EBIT / interest | 5.00x | 3.00x |
For 2026, the arithmetic is 12,600,000 - 7,560,000 - 3,240,000 - 600,000 = $1,200,000 of EBIT. Dividing by $400,000 of interest expense gives 3.00x.
If EBIT is in B2 and interest expense in C2, a spreadsheet cell can use:
=IF(C2>0,B2/C2,NA())
The guard leaves zero or negative interest denominators for review. A net interest credit is a different reporting situation from a positive borrowing expense.
Rebuild EBIT from the bottom of the statement as well as from the operating rows. For 2026, net income of $600,000 plus $200,000 of tax and $400,000 of interest equals $1,200,000. For 2025, $900,000 + $300,000 + $300,000 equals $1,500,000. Both routes match the table.
Then tie the interest denominator to the detailed interest accounts and their P&L total. Confirm that all entities in the numerator are also in the denominator, and that consolidation entries have been applied consistently. Intercompany interest can make a subsidiary calculation appropriate while making an unadjusted group sum misleading.
Finally, multiply the unrounded ratio by interest expense. It must return EBIT. Use unrounded inputs for this check; a displayed multiple can contain a small rounding difference. For a group total, divide total EBIT by total interest instead of taking an unweighted average of subsidiary multiples.
Coverage fell from 5.00x to 3.00x. EBIT fell by $300,000, or 20.0%, while interest expense rose by $100,000, or 33.3%. Both contributed, but they belong to different owners and different decisions.
| Sequential bridge | Calculation | Coverage |
|---|---|---|
| Starting coverage | 1,500,000 / 300,000 | 5.00x |
| Replace EBIT only | 1,200,000 / 300,000 | 4.00x |
| Then replace interest | 1,200,000 / 400,000 | 3.00x |
In this stated bridge order, lower EBIT accounts for a 1.00x decline and higher interest for another 1.00x decline. Reversing the order changes the attribution, so keep the same order between reports. FP&A should explain the earnings movement with operating owners; treasury should explain borrowing balances, rates, and financing charges.
Do not interpret 3.00x as a cash surplus. Receivables can absorb cash, equipment can require replacement, and debt can require principal repayment. The DSCR versus interest coverage comparison shows how scheduled principal changes the question.
An EBITDA numerator adds the table's depreciation and amortization back to EBIT. That produces $2,100,000 and $1,800,000, giving EBITDA interest coverage of 7.00x and 4.50x. Those figures are higher because the earnings definition changed; no interest obligation disappeared.
The Boston Fed's analysis of interest expense and distress uses EBITDA interest coverage and rolling four-quarter sums. That is a practical reason to inspect definitions before comparing sources. The cash coverage ratio article develops the noncash-addback convention without treating it as actual operating cash flow.
A useful peer comparison matches industry economics, accounting scope, period length, and numerator adjustments. A large depreciation charge or unusual gain can change the multiple materially. Compare your own consistent trend first, and document any adjustments before treating a peer's stronger multiple as a performance target.
Bring a sample of your own P&L export and interest-account detail as a file or Google Sheet. Covirage maps the columns, and its tools compute and check the reconciled coverage figures across the supplied periods; the external AI model explains the movement with every figure traced to its rows. Create a free Covirage account to set up your business and bring your own inputs; account creation takes about a minute.
See Covirage for finance teams for the supporting reporting context.
There is no universal good ratio. Compare the same numerator and interest definition across periods and similar businesses, then review earnings volatility and repayment obligations. A contractual threshold belongs to the specific agreement and should not be replaced by a general industry rule.
EBIT divided by interest expense is the convention used here. Some reports use EBITDA, which adds depreciation and amortization back to EBIT. Label that version clearly, because changing the numerator can raise reported coverage without changing interest payments or cash generation.
Yes. Negative EBIT divided by positive interest expense produces negative coverage. It means the business generated an earnings loss before interest and taxes. Read the loss in dollars alongside the ratio, because negative multiples do not measure a usable payment buffer.
Division by zero does not produce a meaningful coverage multiple. Show the ratio as not applicable and explain that the period has no interest expense under the chosen definition. Do not substitute zero interest with a small number to manufacture a result.