Calculate how much you can afford to borrow for a loan based on your income and existing debts.
Loan Affordability Calculator 2026 — Find Out What Mortgage, Auto Loan, or Personal Loan You Qualify For Based on Your Credit Score
Before you apply for any major loan, two numbers determine whether you get approved and at what rate: your credit score and your debt-to-income ratio (DTI). Lenders use both together — a great credit score cannot fully compensate for a DTI that is too high, and a low DTI does not save you from the high rates that come with a poor credit score.
This calculator combines both factors to give you a realistic picture of what you can likely qualify for right now — and exactly how much improving your score or paying down debt would change your options.
- Select your loan type — Mortgage, Auto Loan, or Personal Loan. Each has different qualification standards, maximum DTI limits, and rate ranges.
- Enter your financial details — your gross monthly income (before taxes), your total existing monthly debt payments (credit cards, loans, car payments), and your credit score range.
- Read your results — maximum estimated loan amount, likely interest rate, monthly payment estimate, and a tip on how improving your score would change your qualification.
Loan Affordability Calculator — 2026
Credit Score Requirements by Loan Type in 2026
| Loan Type | Minimum Score | Best Rates Score | 2026 Notes |
|---|---|---|---|
| FHA Mortgage | 500 (10% down) / 580 (3.5% down) | 740+ | FICO 10T and VantageScore 4.0 now required by Fannie/Freddie |
| Conventional Mortgage | 620 | 740+ | Best rates require 740+ under new FICO 10T model |
| HELOC | 620–640 | 740+ | HELOC demand surging in 2026 as home equity rises |
| Auto Loan | No official minimum | 720+ | Subprime rates 17–22% for scores under 580 |
| Personal Loan | 580–600 | 720+ | Online lenders (SoFi, LightStream) require 680+ |
| Credit Card | 580 (secured) / 640 (unsecured) | 700+ | Rewards cards typically require 670+ |
What Is Debt-to-Income Ratio and Why Do Lenders Use It?
Debt-to-income ratio (DTI) is the percentage of your gross monthly income that goes toward debt payments. Lenders calculate it as: (Total Monthly Debt Payments ÷ Gross Monthly Income) × 100.
Your credit score tells lenders how you have managed debt historically. Your DTI tells them how much capacity you have to take on new debt. Even with an excellent credit score, a DTI above 50% will get many loan applications declined. Here are the standard benchmarks lenders use in 2026:
- Under 36% DTI — Excellent. Most lenders will approve at best rates.
- 36% to 43% DTI — Acceptable for most conventional mortgages and personal loans.
- 43% to 50% DTI — Borderline. FHA loans allow up to 57% with compensating factors; most other lenders cap at 43% to 45%.
- Above 50% DTI — Very difficult to qualify for most loan types. Paying down existing debt is the fastest way to improve this.
How Much Does Your Credit Score Affect Your Mortgage Rate in 2026?
The difference between a 620 score and a 740 score on a $300,000 30-year mortgage can mean over $80,000 in extra interest paid over the life of the loan. Here is the real cost of a lower credit score on a $300,000 mortgage at 2026 rates:
| Credit Score | Est. Rate (2026) | Monthly Payment | Total Interest (30 yr) | Extra vs 740+ |
|---|---|---|---|---|
| 740+ | 6.5% | $1,896 | $382,560 | — |
| 700–739 | 6.9% | $1,975 | $411,000 | +$28,440 |
| 660–699 | 7.3% | $2,056 | $440,160 | +$57,600 |
| 620–659 | 7.9% | $2,181 | $485,160 | +$102,600 |
| 580–619 | 8.9% | $2,386 | $558,960 | +$176,400 |
Frequently Asked Questions
What credit score do I need for a mortgage in 2026?
For a conventional mortgage, most lenders require a minimum score of 620. For an FHA loan, the minimum is 580 with 3.5% down, or 500 with 10% down. However, as of 2026, Fannie Mae and Freddie Mac now require lenders to use FICO 10T and VantageScore 4.0 for underwriting — meaning your score may be calculated differently than in prior years. For the best rates, aim for 740 or higher.
Can I get a personal loan with a 580 credit score?
Yes, but your options are limited and rates will be high — typically 25% to 35% APR from lenders that specialize in fair-credit borrowers. Some credit unions offer better rates to members with lower scores. Before taking a high-rate personal loan, consider whether a secured loan, credit builder loan, or borrowing against an asset is a better option.
Does applying for a loan hurt my credit score?
Yes — each application triggers a hard inquiry, which typically drops your score by 5 to 10 points temporarily. For mortgages and auto loans, multiple inquiries within a 14 to 45 day window are treated as a single inquiry by FICO — so rate shopping within that window does not multiply the damage. For personal loans and credit cards, each application is counted separately.
Not happy with your qualification range?
Use our credit improvement guide to push your score into the next tier — potentially saving you tens of thousands on your next loan.
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