Debt Ratio Calculator
Assets financed by debt.
Calculate debt ratio from total debt and total assets — the balance-sheet number that signals how much of the company is funded by borrowing.
What this tool does
Debt ratio as a percentage shows what proportion of total assets is funded by borrowing — total debt divided by total assets. This calculator returns the ratio itself plus the implied equity stake percentage in the remaining capital structure. The result illustrates how much of an organisation's asset base relies on borrowed funds versus owner investment. Total debt is the primary driver of the ratio; as it increases relative to total assets, the debt ratio rises. Conversely, a larger asset base spreads that debt across a wider foundation, lowering the percentage. A typical scenario might involve comparing how two similar businesses finance their operations — one through larger borrowing, another through greater equity contribution — to see how their capital structures differ. The calculator assumes debt and asset figures are current and accurate. It does not account for debt maturity, interest rates, profitability, cash flow or ability to service obligations. Results are for illustration only.
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Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Debt ratio is total debt divided by total assets, shown as a percentage. It measures what share of the business's assets are financed by creditors vs owners. Below 30% is conservative, 30-60% is moderate, above 60% is heavily amplified. Different from debt-to-equity because it measures debt against assets, not against equity alone.
5M debt on 12M total assets = 41.7% debt ratio. Moderate - creditors fund about 42% of the business, owners the remaining 58%. At 70%+ debt ratio, small revenue drops can push the balance sheet toward insolvency as asset values fluctuate against fixed debt obligations.
Debt ratio complements DSCR. Debt ratio shows balance-sheet risk (how much is owed); DSCR shows income-statement risk (whether cash flow covers payments). Both matter - high debt ratio with strong DSCR is livable; low debt ratio with weak DSCR is a red flag that operations aren't generating enough cash even on modest debt levels.
Quick example
With total debt of 5,000,000 and total assets of 12,000,000, the result is 41.67%. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Total Debt and Total Assets. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
What's happening under the hood
Debt ratio = total debt ÷ total assets × 100. Equity portion = assets - debt. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
What to do with a low result
A disappointing result is information, not a judgement. Pick the single input that dragged the figure down most and focus the next quarter on that one factor. Breadth-first improvement rarely works; depth-first on the worst input usually does.
What this doesn't capture
The score is a composite of the inputs you provide. Life context — job security, family obligations, health, housing — doesn't appear in the math but shapes the real picture. Use the number as a prompt, not a verdict.
££5,000,000 debt ÷ ££12,000,000 total assets = 41.67%.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
The calculator computes the debt ratio by dividing total debt by total assets and multiplying by 100 to express the result as a percentage. This ratio indicates what proportion of a business's assets are financed through debt rather than equity. The model assumes that total assets equal the sum of total debt and total equity, and treats both figures as static snapshots at a single point in time. The calculation does not account for the composition or maturity of debt, changes in asset or liability values over time, or the cost of servicing that debt. It provides a straightforward leverage measure commonly used in financial analysis, though interpretation depends on industry norms and business context.
References
Frequently Asked Questions
Debt ratio vs D/E?
What's typical by industry?
Does intangibles affect this?
Is zero debt ratio best?
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