Interest Coverage Calculator Formula
Understand the math behind the interest coverage calculator. Each variable explained with a worked example.
Formulas Used
Interest Coverage Ratio
interest_coverage = interest_expense > 0 ? ebit / interest_expense : 0EBIT After Interest
safety_margin = ebit - interest_expenseVariables
| Variable | Description | Default |
|---|---|---|
ebit | EBIT (Earnings Before Interest & Taxes)(USD) | 400000 |
interest_expense | Annual Interest Expense(USD) | 80000 |
How It Works
How to Calculate Interest Coverage Ratio
Formula
Interest Coverage = EBIT / Interest Expense
This ratio focuses solely on interest payments, ignoring principal repayment. It tells you how many times over a company can pay its interest bill from operating earnings. A ratio below 1.5 raises red flags, while ratios above 3.0 indicate comfortable coverage. Creditors and bond-rating agencies rely heavily on this metric when assessing creditworthiness.
Worked Example
A company reports $400,000 EBIT and $80,000 in annual interest expense.
- 01Interest Coverage = $400,000 / $80,000 = 5.0
- 02EBIT After Interest = $400,000 - $80,000 = $320,000
- 03The company can cover its interest payments 5 times over.
Frequently Asked Questions
What is a safe interest coverage ratio?
Ratios above 3.0 are generally comfortable. Between 1.5 and 3.0 is acceptable but warrants monitoring. Below 1.5 indicates the company is struggling to service its interest obligations.
Why use EBIT instead of net income?
EBIT represents earnings before interest is deducted, so it shows how much income is available to pay interest. Using net income would understate coverage because interest has already been subtracted.
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Open Interest Coverage Calculator