Interest coverage ratio calculator
See how many times operating income covers interest: 250,000 of operating income against 50,000 of interest is a ratio of 5, with a 200,000 cushion and a pass at the usual 1.5 minimum. Set your own threshold. Free in your browser.
- Free
- Runs in your browser
- No sign-up
- Your data stays on your device
Run — free
Worked example
- Operating income
- 250,000
- Interest expense
- 50,000
- Interest coverage ratio
- 5
- Cushion
- 200,000
- Threshold
- 1.5
- Precision
- 4
This interest coverage ratio calculator measures debt-servicing ability by dividing a company's operating income (EBIT or a close operating-profit proxy) by its interest expense for the same period. Enter both amounts in the same currency units, optionally set a lender or policy threshold (default 1.5), and receive the coverage ratio, the absolute cushion of income over interest, and a clear pass/fail flag.
What the interest coverage ratio measures and how it is computed
The interest coverage ratio, also called times interest earned, answers a simple credit question: given the earnings generated by operations, how many times can the firm pay the interest on its debt before other claims and after operating costs. Interest expense is the period interest cost on borrowed funds, in the same currency and period as the income figure. Worked example: operating income of 250,000 against interest expense of 50,000 yields a ratio of 5.0, a cushion of 200,000, and a pass at the default 1.5 threshold.
Another example: income of 100,000 and interest of 80,000 yields 1.25, which fails a 1.5 hurdle even though the firm still covers interest once. A ratio of exactly 1.0 means operating income equals interest with no spare earnings; values below 1.0 mean interest exceeds operating profit for that period. Unlike debt service coverage (DSCR), which divides net operating income by full principal-plus-interest debt service, this calculator isolates interest only — the classic equity and credit-analysis coverage metric for bondholders and revolving facilities that care first about interest-bearing burden.
Where interest coverage fits in credit analysis, covenants, and automation
Lenders, bond analysts, and corporate treasurers use interest coverage to screen borrowers, set or monitor financial covenants, and stress whether a rate rise or earnings dip would push the firm below a contractual minimum. Underwriters may require a minimum coverage of 1.5, 2.0, or higher depending on sector risk; portfolio teams recompute the ratio each reporting period and flag any name that falls short. Students and CFA candidates meet the times-interest-earned form when a textbook asks how many times EBIT covers interest without building a full cash-flow model.
If you need full debt-service coverage including principal amortization, use the separate DSCR tool; this page answers only operating-income over interest expense with stable, reproducible output.
What you can do with it
Loan and bond covenant checks
Verify whether reported operating income covers interest by at least the lender or indenture minimum before closing or reporting.
Teaching and exam practice
Generate reproducible times-interest-earned answers for homework keys, worksheets, and CFA-style coverage drills.
FAQ
What is the interest coverage ratio formula?
The tool returns that ratio plus cushion, threshold, and a passes flag.
What threshold counts as a pass?
passes is true when the raw ratio is greater than or equal to threshold, which defaults to 1.5 but can be set to any finite lender or policy hurdle.
How is this different from DSCR?
DSCR divides net operating income by total debt service (principal and interest). Interest coverage divides operating income by interest expense only — different metric, different search intent.
What does the calculator cost?
It is free in your browser on this page.
What does a ratio below 1 mean?
That interest is larger than operating profit for that period, so earnings do not cover it even once. A ratio of exactly 1 means income only just matches interest, with nothing to spare.
Related tools
For developers — API access
Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.
API endpoint
Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.
Call it from your stack
curl -X POST https://api.kit.forhosting.com/finance/interest-coverage-ratio \
-H "Authorization: Bearer $KIT_KEY" \
-H "Content-Type: application/json" \
-d '{"operating_income":250000,"interest_expense":50000}'const res = await fetch("https://api.kit.forhosting.com/finance/interest-coverage-ratio", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.KIT_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"operating_income": 250000,
"interest_expense": 50000
})
});
const { task_id } = await res.json();import os, requests
res = requests.post(
"https://api.kit.forhosting.com/finance/interest-coverage-ratio",
headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
json={
"operating_income": 250000,
"interest_expense": 50000
},
)
task_id = res.json()["task_id"]<?php
$res = file_get_contents("https://api.kit.forhosting.com/finance/interest-coverage-ratio", false, stream_context_create([
"http" => [
"method" => "POST",
"header" => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
"content" => '{"operating_income":250000,"interest_expense":50000}',
],
]));
$task = json_decode($res, true);body := bytes.NewBufferString(`{"operating_income":250000,"interest_expense":50000}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/finance/interest-coverage-ratio", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)Example request
{
"operating_income": 250000,
"interest_expense": 50000
}Example response
{
"task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
"type": "finance.interest_coverage_ratio",
"status": "queued",
"_links": {
"result": "/tasks/tsk_…/result"
}
}The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.
Pricing
Published price — no tokens, no invented credits. A failed task is never charged.
Errors
| HTTP | Code | Meaning |
|---|---|---|
401 | unauthorized | Missing or invalid API key. |
402 | insufficient_balance | Your balance doesn't cover the task price. |
404 | unknown_type | That task type doesn't exist. |
429 | rate_limited | Too many requests. Use the webhook instead of polling. |
Technical notes
The resulting times-interest-earned figure shows how many times earnings cover contractual interest: a ratio of five means income is five times interest, while a ratio near one means almost no margin. The engine is pure deterministic arithmetic with no market data, no network calls, and no date-dependent shortcuts, so the same inputs always produce the same JSON.
What the interest coverage ratio measures and how it is computed
The standard identity used here is interest_coverage_ratio equals operating_income divided by interest_expense. Operating income is typically EBIT from the income statement, though analysts sometimes substitute EBITDA or another operating-profit line when that is the only figure available; this tool accepts those aliases but does not restate accounting adjustments for you.
Inputs, validation, rounding, and the pass/fail threshold
Operating income may be zero or negative to model a loss-making period, which produces a zero or negative coverage ratio and will fail any positive threshold. Both operating_income and interest_expense are required finite numbers. Interest expense must be strictly greater than zero: a zero or negative interest amount returns a typed invalid_input error that names the field, because dividing by it is undefined or meaningless for coverage. Optional aliases ebit, operating_profit, and ebitda map to operating_income; interest, interest_cost, and finance_costs map to interest_expense so spreadsheets and form clients can reuse familiar labels. The threshold defaults to 1.5, a common commercial and bank-covenant reference point, but you may pass any finite hurdle (or min_ratio) that your policy requires. Failed validation is never billed; only successful API tasks consume prepaid balance at the published base rate of $0.002.
Where interest coverage fits in credit analysis, covenants, and automation
That split — free interactive exploration and a priced, identical API — matches the rest of the KIT parse catalog and lets you move from a single deal screen to an automated pipeline without changing the mathematical result.
Integration use cases
Portfolio credit monitoring
Batch the API across many borrowers or periods to flag any name whose interest coverage falls below policy threshold.
Technical questions
Why must interest expense be greater than zero?
Coverage divides operating income by interest expense, so a zero or non-positive interest_expense is undefined and returns invalid_input.