Debt Ratio Health Score Calculator
0-100 score combining debt-vs-annual-income and debt-vs-savings ratios.
Score debt position 0-100 from total debt, monthly income, and savings. Combines two ratios into a single educational figure with explicit score curves.
What this tool does
Returns a 0-100 educational score combining two ratios: total debt as a share of annual income, and total debt as a multiple of total savings. Each ratio contributes up to 50 points via published score curves. The combined score illustrates how debt levels compare against your income and liquid savings, two factors that shape debt capacity. Higher scores suggest lower leverage relative to these measures. The calculator reports both underlying ratios separately, making it clear which factor drives your overall score. Results fall into defined bands for quick reference. This tool models a snapshot based on current figures and does not account for debt type, interest rates, employment stability, or changes over time. It's designed for educational illustration of debt relationships, not as guidance.
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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.
What this calculator returns
The calculator combines two ratios into a single educational score on a 0-100 scale. The first ratio is total debt as a percentage of annual income — how many years of gross income would be needed to clear the debt. The second ratio is total debt as a multiple of total savings — how many times the savings buffer the debt represents. Each ratio contributes up to 50 points via the explicit score curves below; the two scores are summed for the headline figure.
How the score is calculated
The score is the sum of two sub-scores: a Debt-vs-Annual-Income score (out of 50) and a Debt-vs-Savings score (out of 50). The Debt-vs-Annual-Income sub-score is 50 when debt is below 25% of annual income, 35 between 25% and 50%, 20 between 50% and 100%, 10 between 100% and 200%, and 0 above 200%. The Debt-vs-Savings sub-score is 50 when debt is less than 1× savings, 35 between 1× and 2×, 20 between 2× and 4×, and 10 above 4×. Both curves are step-functions, so a small change near a threshold can move the headline score by 15 points while a similar change in the middle of a band leaves the score unchanged.
Why this is not a lender DTI
The familiar DTI ratio used by mortgage and consumer lenders is monthly debt payments divided by monthly gross income — a payment-flow ratio, typically used with thresholds around 36% strong / 43% upper limit. This calculator does not compute that. It computes total debt balance divided by annual income, which is a stock-vs-flow ratio and answers a different question: what share of one year's earnings the entire debt represents. The two metrics use the same letters but measure different things; the published thresholds for one do not translate to the other.
Why a score band is shown alongside the number
The headline 0-100 figure is most useful in context. The result panel maps the score to a four-band classification (Strong 80-100, Moderate 60-79, Stretched 40-59, Stretched-low under 40) so the magnitude has a verbal anchor. The bands are the score's own thresholds, not external lender thresholds.
What changes the score most
The two ratios respond differently to changes in inputs. Adding to savings without changing debt or income directly improves the debt-vs-savings ratio without affecting debt-vs-annual-income. Repaying debt improves both ratios. Increasing income improves debt-vs-annual-income but not debt-vs-savings. Because the score is a sum of two step functions, a single input change can move the score by 15 points if it crosses a threshold, or by 0 points if it stays within the same band. The sub-score breakdown in the result panel shows which of the two is moving on any given change.
Where the simulation simplifies
The calculator is a snapshot — it uses balances at a single moment, not flows over time. Income variability, the term structure of the debt, the interest rates on the debts, and any fixed monthly debt payments are all outside the scope. The score is an educational summary based on the two stock ratios, not a credit assessment, an affordability check, or a substitute for a lender's underwriting.
Where to look next
The annual-budget-health-check covers the cash-flow side that this tool does not. The debt-to-savings-ratio tracker focuses on the second of the two ratios in isolation. The commercial-loan-DSCR calculator runs the equivalent flow-based coverage ratio for property and business debt.
On a $25,000 balance with a $4,000 monthly income and $15,000 in savings, the calculator estimates a debt ratio health score of 55 / 100.
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
Score = Debt-vs-Annual-Income sub-score + Debt-vs-Savings sub-score, each on a 0-50 scale. Debt-vs-Annual-Income = (total debt / (monthly income × 12)) × 100. Sub-score curve: <25% → 50, <50% → 35, <100% → 20, <200% → 10, else 0. Debt-vs-Savings = total debt / total savings (capped at 999 when savings are zero). Sub-score curve: <1× → 50, <2× → 35, <4× → 20, else 10. Score band: 80-100 Strong, 60-79 Moderate, 40-59 Stretched, <40 Stretched-low. The metric is distinct from the lender DTI ratio (monthly debt payments / monthly income) — published thresholds for that ratio do not translate to this one. All values computed at full precision and rounded only at display.
Frequently Asked Questions
How does this metric differ from the DTI ratio used by lenders?
Why does a small change near a threshold move the score by 15 points?
What balances should be included in the total debt input?
What does the score not capture?
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