Mortgage rates aren't random. They're based on a mix of economic factors, your personal financial profile, and the type of loan you choose. Here's what affects the rate lenders offer you:
Your credit score is one of the biggest factors in the rate you get. Here's a general breakdown for a $300,000 30-year conventional mortgage:
| Credit Score | Est. Rate (2026) | Monthly Payment | Total Interest (30yr) |
|---|---|---|---|
| 760–850 | ~6.5% | ~$1,896 | ~$382,000 |
| 700–759 | ~6.8% | ~$1,966 | ~$408,000 |
| 680–699 | ~7.2% | ~$2,035 | ~$433,000 |
| 620–679 | ~7.8% | ~$2,160 | ~$478,000 |
| 580–619 | ~8.5% | ~$2,306 | ~$530,000 |
A 100-point difference in credit score can mean $100+ per month on a typical mortgage — that's $36,000+ over 30 years.
💡 Pro tip: If your score is below 700, it may be worth delaying a few months to improve it before applying. Even a 20-point improvement can meaningfully lower your rate.
Most conventional loans require at least 5% down. But putting down 20% or more means:
5% down ($17,500): Loan = $332,500 at 7.0% → Payment ≈ $2,213/mo + ~$180 PMI = ~$2,393/mo
20% down ($70,000): Loan = $280,000 at 7.0% → Payment ≈ $1,863/mo (no PMI)
Monthly savings: $530/month × 12 months × 30 years = $190,800 saved
30-year fixed rate is the most popular — your rate stays the same for the entire life of the loan. Your payment is predictable and won't change even if rates rise.
5/1 or 7/1 ARMs offer a lower initial rate for 5 or 7 years, then adjust annually after that. They make sense if you plan to sell or refinance before the adjustment period begins.
| Feature | 30-Year Fixed | 5/1 ARM |
|---|---|---|
| Initial rate | 7.0% | 5.9% |
| Rate cap after initial | None (rate is fixed) | +2% per year, +5% lifetime |
| Best for | Most buyers — stability | Short-term owners (5–7 yr) |
| Risk level | Low | Medium-High |
One point = 1% of your loan amount, paid upfront. It typically reduces your rate by 0.25%–0.5%. On a $300,000 loan, one point costs $3,000.
Is it worth it? If you stay in the home for 5+ years, buying 1–2 points often pays off. Run the numbers with our mortgage calculator to see your break-even point.
Enter your home price, down payment, and rate to see your estimated payment.
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