Loan Prequalification Calculator
Estimate how much you may qualify to borrow based on your income, existing debts, APR, and loan term. Uses the standard 36% debt-to-income guideline used by most US lenders.
A loan prequalification calculator estimates your borrowing power using the debt-to-income (DTI) ratio — the primary metric lenders use after credit score to determine loan eligibility. The CFPB recommends keeping total debt payments below 36% of gross monthly income (CFPB, 2025). At the US median household income of $80,610/year ($6,718/month, Census Bureau 2024), that 36% cap allows up to $2,419 in total monthly debt — meaning a borrower with $1,200 in existing payments could qualify for roughly $46,000 in new borrowing at 13% APR over 48 months.
bolt Quick Answer
A loan prequalification calculator estimates your maximum loan amount using your gross monthly income, existing debt payments, estimated APR, and desired loan term. Most lenders cap total debt at 36% DTI. At median US income with $1,200 in existing debts, the standard formula allows approximately $46,400 in new borrowing at 13% APR over 48 months — before credit score and employment verification.
tips_and_updates Key Takeaways
- check_circle Most lenders cap total debt payments at 36% of gross monthly income (DTI ratio).
- check_circle Your DTI ratio is the #1 factor after credit score in determining how much you can borrow.
- check_circle Paying off a $200/month debt increases borrowing power by ~$8,000 on a 48-month loan at 13% APR.
- check_circle At median US income ($6,718/month) with $1,200 in existing debts, the formula allows ~$46K at 13% APR.
- check_circle Prequalifying doesn't guarantee approval — lenders also consider credit score, employment, and collateral.
Estimate Your Borrowing Power
Enter your income and existing debts to estimate the maximum loan amount you may qualify for based on standard DTI guidelines.
Include credit cards (minimum payments), car loans, student loans, and other installment debts.
DTI Limit
Standard 36% is used by most conventional lenders. 43% is the FHA guideline maximum.
Estimated Max Loan Amount
Based on your available DTI capacity and loan terms
DTI Usage
DTI Status
Calculating...
Soft credit check — no impact to your score.
Why Prequalify Before You Apply?
Know Your Number First
Applying for more than you qualify for triggers hard inquiries that hurt your credit. Know your realistic ceiling before you approach any lender.
Improve Your Position
Adjust the sliders to see exactly how paying down a debt or increasing income changes your borrowing power. Use it as a financial planning tool.
Zero Credit Impact
Every calculation runs entirely in your browser. No data leaves your device. No credit bureau is contacted. No score impact — ever.
What Is a Debt-to-Income (DTI) Ratio and Why It Matters
Your debt-to-income ratio is the percentage of your gross monthly income that goes toward debt payments. It is calculated by dividing total monthly debt obligations by gross monthly income — before taxes or deductions. For example, if you earn $5,000 per month and pay $1,800 total in debt payments, your DTI is 36%.
Lenders use DTI because it directly measures your capacity to take on new debt. Unlike your credit score, which reflects past behavior, DTI reflects your current financial obligations relative to your income. A borrower with excellent credit but a 55% DTI is a riskier bet than a borrower with good credit and a 25% DTI — because the first borrower is already heavily committed each month.
The CFPB recommends keeping total debt payments below 36% of gross income (CFPB, 2025). FHA-backed mortgages allow up to 43%, and some specialized lenders accept up to 50% for borrowers with compensating factors such as large cash reserves or very high credit scores. However, exceeding 43% materially narrows your lender options and often triggers higher APRs even if you qualify.
| DTI Ratio | Status | Lender Acceptance |
|---|---|---|
| Under 28% | Excellent | All lenders |
| 28%–36% | Good | Most lenders |
| 36%–43% | Acceptable | FHA, some conventional |
| 43%–50% | High Risk | Limited lenders |
| Over 50% | Too High | Very few lenders |
Source: CFPB Debt-to-Income Guidelines, 2025.
How Much Can You Borrow Based on Your Income? (2026 Guide)
The maximum loan amount you can qualify for is determined by the gap between your income-based DTI ceiling and your existing debt commitments. The formula is straightforward: multiply your gross monthly income by the DTI limit (0.36 for standard), subtract your current monthly debt payments, and the remainder is the maximum new monthly payment a lender will allow. That payment is then reverse-engineered using amortization math to produce a maximum loan amount.
By the Numbers
At the US median income of $80,610/year = $6,718/month (Census Bureau, 2024): $6,718 × 36% = $2,419 max total debt. Minus $1,200 average existing payments = $1,219 available for a new loan. At 13% APR over 48 months, that $1,219/month supports approximately $46,400 in new borrowing.
Every $250 increase in monthly income adds roughly $3,400 in borrowing capacity at 13% APR over 48 months. Conversely, every $100 reduction in existing monthly debts adds approximately $3,400 in capacity at the same terms. This is why financial advisors often recommend aggressively paying off small high-payment debts — a $200/month minimum on a credit card that you eliminate adds approximately $8,000 in loan prequalification headroom.
5 Ways to Increase Your Loan Prequalification Amount
If this calculator shows a lower number than you need, these five strategies can meaningfully increase your qualified borrowing amount — some within weeks:
- chevron_right Pay off or pay down existing debts — eliminating a $200/month minimum payment adds ~$8,000 in qualified borrowing on a 48-month loan at 13% APR. Target the debts with the highest minimum payments relative to their balance first.
- chevron_right Add a co-borrower — a co-signer or joint borrower whose income is included in the application raises the gross income figure and therefore the DTI ceiling. Both borrowers are equally responsible for repayment.
- chevron_right Choose a longer loan term — stretching from 48 to 60 months at 13% APR lowers the required monthly payment for the same loan amount, allowing you to qualify for a larger loan. The trade-off is more total interest paid.
- chevron_right Improve your credit score for a lower APR — moving from a 13% APR to a 9% APR means each dollar of allowed payment supports more principal, increasing your qualified loan amount by 10–15%.
- chevron_right Document all income sources — freelance income, rental income, alimony, and investment distributions can often be included as qualifying income if properly documented. Ask your lender what documentation they accept.
Loan Prequalification Calculator FAQs
What is loan prequalification? expand_more
Loan prequalification is an early-stage estimate of how much you may be able to borrow, based on self-reported financial information such as income, existing debts, and sometimes credit score range. It gives you a realistic borrowing target before you formally apply. Prequalification typically involves only a soft credit inquiry, which does not affect your credit score, and is not a guarantee of loan approval.
What DTI ratio do lenders require? expand_more
Most conventional lenders cap total debt-to-income (DTI) at 36%, meaning your total monthly debt payments — including the new loan — should not exceed 36% of your gross monthly income. FHA guidelines allow up to 43% DTI in some cases, and a small number of lenders will go up to 50% for well-qualified borrowers. The CFPB recommends keeping total debt payments below 36% of gross income (CFPB, 2025).
How do I calculate my debt-to-income ratio? expand_more
To calculate your debt-to-income ratio, add up all your monthly debt payments — including minimum credit card payments, car loans, student loans, and any other installment or revolving debt — and divide by your gross monthly income (before taxes). Multiply by 100 for a percentage. For example, $1,500 in monthly debts divided by $5,000 gross income equals a 30% DTI ratio.
Does prequalification affect my credit score? expand_more
No. Loan prequalification typically involves a soft credit inquiry, which does not affect your credit score. Only a formal loan application triggers a hard inquiry, which can temporarily lower your score by 2–5 points. This calculator does not submit any information to lenders or credit bureaus — all calculations run locally in your browser with zero credit impact.
What's the difference between prequalification and preapproval? expand_more
Prequalification is a preliminary estimate based on self-reported information with typically a soft credit pull. Preapproval is a more rigorous process where the lender verifies your income, assets, and credit with a hard inquiry, resulting in a conditional commitment to lend up to a specific amount. Preapproval carries more weight with sellers and gives a more accurate borrowing figure, but it does temporarily impact your credit score.
More Tools
Other Calculators You Might Need
Personal Loan Calculator
Calculate monthly payments and total interest for any personal loan amount, APR, and term.
Debt Consolidation Calculator
See how rolling multiple debts into one loan can lower your DTI and monthly payment.
Amortization Calculator
View a full payment-by-payment breakdown of principal and interest for any loan.
Ready to see your real offers?
Get matched with trusted lenders in our network in minutes. Free service. No obligation. Soft credit check only — no score impact.
Get Pre-Qualified