How can I lower my DTI quickly?

Pay down revolving debt, refinance to lower required minimum payments, avoid new loans, and increase gross income through raises or additional consistent income sources.

What debts are included in back-end DTI?

Typical back-end DTI includes housing payment, minimum credit card payments, auto loans, student loans, personal loans, and other recurring obligations like alimony or child support.

Debt-to-Income (DTI) Calculator

Calculate front-end and back-end DTI ratios, assess underwriting risk bands, and see how much monthly debt capacity you have at key lender thresholds.

Gross monthly income ($)

Monthly housing payment ($)

Monthly minimum debt payments ($)

Additional recurring obligations ($, optional)

Include housing payment in back-end DTI

How to use this DTI calculator

Debt-to-income ratio compares required monthly debt obligations against your gross monthly income. Lenders use it to gauge affordability and repayment risk.

Front-end DTI focuses on housing cost only. Back-end DTI includes housing plus debt obligations like credit card minimums, auto loans, student loans, and other recurring liabilities.

Planning a home purchase? Also check our Mortgage Calculator, Down Payment Calculator, and Rent vs Buy Calculator.

Methodology, Assumptions, and Limitations

This DTI calculator compares your required monthly obligations with your gross monthly income. Front-end DTI uses housing payment only. Back-end DTI combines housing, minimum debt payments, and other recurring obligations, depending on the toggle you select.

Income basis: gross monthly income before taxes and deductions.
Debt basis: minimum required payments, not accelerated payoff amounts.
Thresholds shown: 36%, 43%, and 50% are common screening bands, not guaranteed approval cutoffs.
Underwriting reality: lenders may also evaluate credit score, reserves, property type, compensating factors, and automated underwriting findings.

Limitation: this page gives a planning estimate only. Individual lenders can calculate DTI differently, especially for student loans, HOA dues, variable income, rental income offsets, and nontraditional loan programs.

Worked Example

If your gross monthly income is $7,000, your housing payment is $1,800, minimum debt payments are $650, and other recurring obligations are $150, then your front-end DTI is about 25.7%. If housing is included in back-end DTI, your total monthly obligations are $2,600, producing a back-end DTI of about 37.1%, which is often workable but no longer in the strongest underwriting tier.

Source References

Editorial Transparency

Last updated: March 8, 2026 · Author: CalcSharp Editorial Team · Reviewed by: CalcSharp Finance Review Desk

This calculator is educational and not a loan approval tool. Always confirm affordability with lender disclosures and your full budget.

Mortgage Calculator → Rent vs Buy → Down Payment →

Frequently Asked Questions

What is a good debt-to-income ratio?

Many lenders target back-end DTI of 36% or lower, with some programs allowing up to 43%. Ratios above 50% are often considered high risk.

What is the difference between front-end and back-end DTI?

Front-end uses housing payment only. Back-end adds housing and all other monthly minimum debt obligations, divided by gross monthly income.

Does rent count in DTI calculations?

Yes, housing cost (rent or mortgage) is always part of front-end DTI and often part of back-end DTI in mortgage underwriting.

What monthly debts should I include?

Include required minimum debt payments: credit cards, auto, student and personal loans, plus recurring obligations such as alimony or child support.

How can I improve my DTI before applying?

Pay down revolving balances, reduce required payments, avoid new debt, and increase verifiable income before applying.

Related Calculators

Use these tools to plan your full home affordability picture.

Mortgage Calculator → Down Payment Calculator → Rent vs Buy Calculator →