What it means
The traditional interest cover ratio divides operating profit by interest, but profit includes items that never turn into money on the due date. Swapping in operating cash flow answers the question a lender really cares about: is there enough actual cash arriving to service the debt?
The result is expressed as a multiple, so a ratio of 6 times means the business generates six dollars of relevant cash for every dollar of interest. Loan agreements very often contain a covenant setting a minimum, commonly somewhere between 2 and 4 times, tested quarterly.
Building the numerator takes a small adjustment. Operating cash flow is normally reported after interest and tax have been paid, so both are added back to give the cash available before those payments, and that adjusted figure is then divided by interest paid.
The measure is more conservative than earnings based cover, which is exactly the point. A business with 5 times cover on profit but only 1.8 times on cash is telling you that its earnings are not converting, usually because customers are slow or stock is building.
One nuance worth knowing is that the ratio only covers interest, not principal repayments. A company can pass an interest cover test comfortably and still be unable to meet a loan amortisation schedule, which is why lenders normally pair it with a debt service cover ratio.
In practice
Real-world examples.
Example
A hotel group with $40,000,000 of debt reports cash available for interest of $9,000,000 against interest of $3,000,000, giving cover of 3.0 times. Its lender sets the covenant at 2.5 times, leaving limited room before a refinancing conversation becomes necessary.
Example
A software business with almost no debt calculates cover of 45 times and stops reporting it monthly, since it carries no meaningful risk. The board reinstates the measure only when an acquisition financed by borrowing is proposed.
Example
A manufacturer shows earnings based interest cover of 4.8 times but cash based cover of just 1.6 times. The gap sends its bank straight to the working capital schedule, where stock has risen by 60% in a year.
Think of it
“Cash flow interest coverage shows how many times over your cash flow can pay interest-the cash version.
Formula
Calculation
Cash flow interest coverage ratio = (operating cash flow + interest paid + taxes paid) / interest paid
A regional logistics company reports operating cash flow of $3,600,000 after paying interest of $800,000 and tax of $600,000 during the year.
Adding those back gives cash available for interest of $3,600,000 + $800,000 + $600,000 = $5,000,000. Dividing by interest paid gives $5,000,000 / $800,000 = 6.25 times.
Its loan covenant requires cover of at least 3.0 times, so the business has considerable headroom. To breach the covenant, cash available would have to fall below 3.0 x $800,000 = $2,400,000, a drop of $2,600,000 from the current level, or more than half of the cash it currently generates.Case study
Seen in the real world.
The following is an illustrative and fictional account. Pellingford Metalworks, an invented fabricator, borrowed $10,000,000 to buy a competitor and agreed a covenant requiring cash flow interest coverage of at least 3.0 times, tested every quarter.
In the first year the illustrative business generated cash available for interest of $2,700,000 against interest of $700,000, comfortable cover of about 3.9 times. In the second year interest rose to $900,000 as rates moved, while the integration pushed stock and receivables up sharply and cash available fell to $2,340,000. Cover dropped to 2.6 times and the covenant was breached.
Pellingford's fictional finance director had been tracking the ratio monthly and had warned the bank two quarters ahead of the breach. Because the conversation happened early and came with a working capital recovery plan, the bank reset the covenant to 2.25 times for four quarters rather than calling the loan.
Watch out
Common mistakes.
- Using operating cash flow straight from the statement without adding back interest and tax, which understates the ratio and can trigger a false covenant alarm.
- Assuming a comfortable ratio means the debt is affordable, when principal repayments sit outside the calculation entirely.
- Calculating it once a year at the audit, rather than tracking it monthly so that a covenant breach can be seen coming.
Questions
People also ask.
What is a safe level?
Most lenders look for at least 2.5 to 3.0 times, though the appropriate level depends on how stable the sector's cash flows are.
How does it differ from ordinary interest cover?
Ordinary cover uses operating profit, while this version uses cash, so it strips out revenue that has been earned but not yet collected.
What should a business do if the ratio is falling?
Address working capital first, since collection and stock are usually faster to fix than either interest cost or trading performance.
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