Interest Coverage Ratio Calculator

What this calculator does

Borrowed money has to be serviced, and the first test any lender applies is whether the business is earning enough to pay the interest. This calculator answers that with one division:

Interest coverage ratio = EBIT ÷ Interest expense

EBIT is earnings before interest and tax, which is the operating profit the business produced before the lenders and the tax authority took their cuts. Dividing it by the interest bill tells you how many times over the company could pay that bill out of a single year's operating profit. It is sometimes called times interest earned, which is a plainer name for the same thing.

Times covered, and what that actually counts

The result reads as a multiple with an intuitive meaning. A ratio of 3 says operating profit is three times the interest bill, so the company could lose two-thirds of its profit and still just meet the payments. A ratio of 1 means profit covers interest exactly, with nothing whatsoever left for tax, for repaying debt, for reinvestment, or for shareholders. Below 1 the company is not earning enough to pay its interest from operations at all, and has to find the shortfall from cash reserves, asset sales, or fresh borrowing.

The usual reference points are worth knowing while treating them as rough. Ratios below about 1.5 are widely read as a warning sign, since so little headroom remains that an ordinary bad year could push the company under the line. Around 2 is often cited as a working minimum, and lenders frequently set covenant floors at that level or above. Above 3 is generally regarded as comfortable.

Two qualifications keep those numbers honest. What counts as safe depends on how stable the earnings are: a regulated utility with predictable revenue can carry thinner coverage than a cyclical manufacturer whose profit can halve in a downturn. And EBIT is an accounting figure, not cash. Interest has to be paid in actual money, so a company with healthy EBIT tied up in unpaid customer invoices can look better on this ratio than its bank balance justifies.

Two figures, and where to find them

1. EBIT. Operating profit, taken from the income statement before interest and tax are deducted. Many companies report an operating profit line directly, which is usually a close enough stand-in, though strictly EBIT can also include some non-operating income.
2. Interest expense. The finance cost for the same period. Use the gross interest charge rather than a figure netted against interest income, since the question is whether operations cover what is owed.

Both figures must cover the same period, annual against annual or quarterly against quarterly. Press Calculate for the multiple, or Reset to clear the fields.

Four companies, from comfortable to cornered

Take four businesses, each carrying an annual interest bill of 4,000,000, and vary only the operating profit.

• EBIT of 40,000,000: coverage 10.00. Interest is a rounding error against profit.
• EBIT of 12,000,000: coverage 3.00. Comfortable, with room for a difficult year.
• EBIT of 6,000,000: coverage 1.50. At the threshold most analysts treat as a warning.
• EBIT of 3,600,000: coverage 0.90. Operating profit no longer covers the interest, and the gap has to be funded from somewhere else.

The scale is unforgiving at the bottom. Moving from 3.00 to 1.50 sounds like halving something, but in practice it is the difference between a business that can absorb a bad year and one where a bad year becomes a solvency conversation with the bank. Which makes it all the more important to know what this figure quietly leaves out.

The obligation this ratio cannot see

Interest is only half of what a borrower owes. The other half is the principal, the borrowed sum itself, and this ratio contains no trace of it.

The consequence is a genuine blind spot. A company can post interest coverage of 6, which by any normal reading is strong, while having a very large loan falling due within the year. It has no interest problem at all. It may well have a serious refinancing problem, and the coverage ratio will not hint at it, because the calculation only ever compares profit against the annual interest charge. Companies do not usually fail because they cannot pay interest. They fail because a maturity arrives and nobody will roll it over.

There are two standard ways to close that gap, and both are worth knowing since they are what lenders actually rely on. The debt service coverage ratio adds scheduled principal repayments into the denominator, so it measures whether earnings cover the full debt service rather than just the interest slice. The fixed charge coverage ratio goes wider still and brings in other unavoidable commitments such as lease payments, which matters enormously for companies that rent their premises or equipment rather than owning them.

None of this makes interest coverage a poor measure. It is quick, it uses two figures anyone can find, and a low reading is a reliable signal that something is wrong. Just treat it as the first question rather than the whole examination, and when the answer looks reassuring, check the maturity schedule before believing it.

Questions people ask

What counts as a good interest coverage ratio?

Above 3 is generally comfortable, around 2 is a common minimum, and below 1.5 is widely treated as a warning. Stable, predictable businesses can safely operate at lower coverage than volatile ones.

What does a ratio below 1 mean?

That operating profit does not cover the interest bill. The shortfall has to come from reserves, asset sales, or new borrowing, none of which is sustainable for long.

Should I use EBIT or EBITDA?

This calculator uses EBIT, the conventional definition. Analysts sometimes substitute EBITDA for capital-intensive businesses, since depreciation is a large accounting charge with no cash attached, which produces a higher and more cash-oriented figure.

What if the company has no interest expense?

Then the ratio is undefined rather than infinite, and the calculator will ask for a figure. A debt-free company simply does not need this measure.

References

The times interest earned ratio, also known as interest coverage, measures a company's ability to pay the interest incurred on long-term debt, using earnings before interest and taxes as the measure of available earnings, and lenders examine it before extending credit. It is a solvency measure that considers interest alone, so scheduled principal repayments are addressed by the broader debt service coverage ratio and other fixed commitments by the fixed charge coverage ratio.

1. OpenStax, Principles of Finance, 6.4 Solvency Ratios. https://openstax.org/books/principles-finance/pages/6-4-solvency-ratios
2. Financial Modeling Prep, Coverage Ratio Formula: A Practical Guide for Analysts. https://site.financialmodelingprep.com/education/financial-ratios/coverage-ratio-formula-a-practical-guide-for-analysts