Calculate your loan-to-income ratio
Use this calculator to estimate how large a loan is compared to your income and how the monthly payment impacts your debt-to-income (DTI).
What is a loan-to-income ratio?
The loan-to-income ratio compares your total loan amount to your gross annual income. It helps you understand whether a proposed loan is proportionate to what you earn.
For example, if you borrow $180,000 and earn $60,000 per year, your loan-to-income multiple is 3.0x (or 300%). In simple terms, the loan equals three years of gross income.
Why this ratio matters
Lenders look at income-based affordability metrics to reduce risk and to prevent borrowers from taking on unmanageable debt. While each lender has its own model, most care about:
- Loan-to-income multiple: Total loan compared to annual income.
- Payment-to-income ratio: New monthly payment compared to gross monthly income.
- Total debt-to-income ratio (DTI): New payment plus existing debts divided by gross monthly income.
Using all three gives a more realistic picture than looking at only one number.
How the calculator works
Loan-to-Income (Multiple) = Loan Amount ÷ Annual Income
Monthly Loan Payment (amortized) uses principal, APR, and term.
Payment-to-Income = Monthly Loan Payment ÷ Gross Monthly Income
Total DTI = (Monthly Loan Payment + Other Monthly Debts) ÷ Gross Monthly Income
What is considered a “good” result?
General guideline ranges
- Total DTI under 36%: Typically strong affordability.
- 36% to 43%: Often acceptable, depending on lender and credit profile.
- 43% to 50%: Higher risk; approval may be tougher.
- Above 50%: Usually stretched and difficult to qualify.
Loan-to-income multiples vary by loan type. Mortgage underwriting may tolerate higher multiples than unsecured personal loans, but higher multiples usually increase financial stress.
How to improve your ratio before applying
- Increase your down payment or reduce the amount borrowed.
- Pay off revolving debt to lower monthly obligations.
- Extend loan term (caution: this can increase total interest).
- Improve credit profile to qualify for lower interest rates.
- Add stable documented income where allowed by lender rules.
Common mistakes to avoid
1) Ignoring other debts
Many borrowers focus only on the new loan payment. Lenders usually include your existing obligations in DTI, so this can lead to false confidence.
2) Forgetting taxes and insurance
For housing loans, principal and interest may not be your only costs. Property taxes, homeowners insurance, and HOA dues can materially affect affordability.
3) Using net income in place of gross income
Most underwriting formulas use gross income. Using net pay can make ratios look worse than lender calculations, while switching back and forth creates confusion.
Quick example
Suppose you plan to borrow $300,000 at 6.25% for 30 years, with annual gross income of $110,000 and other monthly debt of $500.
- Loan-to-income multiple: 2.73x
- Estimated monthly payment: approximately $1,847
- Payment-to-income: about 20.1%
- Total DTI: about 25.5%
That scenario is usually considered manageable from a DTI perspective, though final approval still depends on credit, assets, collateral, and lender overlays.
Final thoughts
A loan to income calculator is a fast way to pressure-test borrowing decisions before you apply. It helps you compare loan sizes, rates, and terms using the same framework lenders often use. Use it early, adjust your plan, and borrow with confidence—not guesswork.