DTI Mortgage Ratio Estimator: Separating DTI estimates from approval — Worked Scenario

What this scenario actually checks

DTI here is a simplified ratio rather than an official lending decision. Check whether your bank's assessment uses additional borrowing, income adjustments or different debt-service rules. DTI Mortgage Ratio Estimator is an interactive, mobile-friendly calculator for browser-local estimates. It displays labelled quantities so that inputs, assumptions and outcomes stay clear. Uses annual mortgage principal and interest plus other borrowing interest divided by annual income. Not a full bank underwriting rule.

This walkthrough focuses on separating dti estimates from approval. It follows the published tool inputs, not a new formula or an automatically verified legal, financial, medical or engineering determination.

Start by preparing the right inputs

Enter your actual values and units: Annual gross income (KRW), Annual mortgage P&I (KRW), Other annual loan interest (KRW), DTI reference limit (%). Uses annual mortgage principal and interest plus other borrowing interest divided by annual income. Not a full bank underwriting rule.

Before copying the example, confirm that each entered unit, date, dimension and default matches your real task. Changing only a visible number without revisiting its assumptions can change what the answer means.

• Enter your actual values and units: Annual gross income (KRW), Annual mortgage P&I (KRW), Other annual loan interest (KRW), DTI reference limit (%).
• Uses annual mortgage principal and interest plus other borrowing interest divided by annual income. Not a full bank underwriting rule.
• Press Calculate to see a labelled result breakdown. Use current, verified rules and specifications rather than the example values for consequential decisions.

Worked example with the calculator

Use the following input values: Annual gross income (KRW): 80000000 · Annual mortgage P&I (KRW): 20000000 · Other annual loan interest (KRW): 3000000 · DTI reference limit (%): 60.

The example output is Annual DTI repayment total: 23,000,000 KRW. A worked example using the listed default inputs. Uses annual mortgage principal and interest plus other borrowing interest divided by annual income. Not a full bank underwriting rule.

Treat this as a reproducible example, not a result to reuse with different measurements.

What can change the answer

Press Calculate to see a labelled result breakdown. Use current, verified rules and specifications rather than the example values for consequential decisions.

Is the output a legally or technically certified result? No. Check verified rates, conditions and underlying rules first. Uses annual mortgage principal and interest plus other borrowing interest divided by annual income. Not a full bank underwriting rule.

Is DTI the same as DSR? No. DTI and DSR can count debt payments differently. This estimator uses the documented DTI inputs and does not replace a lender's DSR calculation.

Before using the result for a real decision

For separating dti estimates from approval, check the original measurements and input units, and save the assumptions alongside any number you share.

Where legal rules, official allowances, equipment ratings or contractual conditions matter, consult their current authoritative documents. An illustrative estimate is not a substitute for that verification.

• Reproduce the example before changing inputs
• Check all units and assumptions, including any default values
• Verify official or manufacturer-specific requirements outside the calculator