Mortgage Rates Surge, But the 30-Year Refuses to Budge
Mortgage Rates Update: Tuesday, August 18, 2026 — What You Need to Know
Quick Takeaway: Mortgage rates are mostly higher today compared to Monday, but the popular 30-year fixed rate held steady. If you’re shopping for a home or thinking about refinancing, here’s the simple breakdown of what’s happening.
Today’s Mortgage Rates at a Glance
According to the Zillow lender marketplace, here are the national average rates for Tuesday, August 18, 2026 (rounded to the nearest hundredth):
Purchase Rates
| Loan Type | Rate | Change from Yesterday |
|---|---|---|
| 30-year fixed | 6.53% | ↓ 1 basis point (basically unchanged) |
| 20-year fixed | 6.45% | — |
| 15-year fixed | 5.94% | ↑ 8 basis points |
| 5/1 ARM | 6.39% | ↑ 15 basis points |
| 7/1 ARM | 6.29% | — |
| 30-year VA | 6.05% | — |
| 15-year VA | 5.63% | — |
| 5/1 VA | 5.94% | — |
Refinance Rates
Refinance rates are typically a bit higher than purchase rates.
| Loan Type | Rate |
|---|---|
| 30-year fixed | 6.63% |
| 20-year fixed | 6.73% |
| 15-year fixed | 6.11% |
| 5/1 ARM | 6.52% |
| 7/1 ARM | 6.35% |
| 30-year VA | 6.05% |
| 15-year VA | 5.75% |
| 5/1 VA | 5.78% |
Important: These are national averages. Your actual rate depends on your credit score, down payment, loan type, and the lender you choose. Always shop around!
Estimate Your Monthly Payment
Use the Yahoo Finance Mortgage Calculator to see how different rates and loan terms affect your monthly payment. It includes:
- Principal & interest
- Property taxes
- Homeowners insurance
- HOA fees (if applicable)
- Private mortgage insurance (PMI) if your down payment is under 20%
Bookmark it: Yahoo Finance Mortgage Payment Calculator
Why it matters: Looking at just principal and interest can make a payment seem lower than it really is. The calculator gives you the full picture.
30-Year vs. 15-Year Fixed: Which Is Right for You?
The Short Version
- 15-year loan: Lower rate, higher monthly payment, way less interest paid over time
- 30-year loan: Higher rate, lower monthly payment, more interest paid over time
Real Example: $400,000 Loan
| 30-Year @ 6.19% | 15-Year @ 5.65% | |
|---|---|---|
| Monthly Payment (P&I) | ~$2,447 | ~$3,300 |
| Total Interest Paid | $481,021 | $194,047 |
| Interest Savings | — | $286,974 less! |
Can’t Afford the 15-Year Payment?
No problem. You can:
- Take the 30-year loan for the lower required payment
- Make extra payments whenever you can
- Pay it off early and save on interest — on your own schedule
Pro Tip: Even one extra payment per year can shave years off your loan and save thousands in interest.
Fixed-Rate vs. Adjustable-Rate Mortgages (ARM)
Fixed-Rate Mortgage
- Your interest rate never changes for the life of the loan
- Predictable payments — great for budgeting
- Rate only changes if you refinance
Adjustable-Rate Mortgage (ARM)
- Rate stays the same for a set period (e.g., 5 or 7 years)
- After that, it adjusts — usually once a year — based on market conditions
- Example: 7/1 ARM = fixed for 7 years, then adjusts annually
The Catch
- ARMs used to start with lower rates than fixed loans
- Lately, ARM rates have been higher or similar — so you might not get a discount
- Risk: Your payment could jump significantly after the fixed period ends
Learn More: How to Choose Between Fixed vs. ARM
What Do Experts Predict for 2026–2027?
| Source | 2026 Forecast (30-Year Fixed) | 2027 Forecast (30-Year Fixed) |
|---|---|---|
| MBA (Mortgage Bankers Association) | 6.50% | 6.5% |
| Fannie Mae | 6.4% | ~6.3% |
Translation: Rates are expected to stay relatively flat — no big drops, no big spikes. If you’re ready to buy, waiting probably won’t save you much.
Summary: Key Takeaways
- 30-year fixed rate: 6.53% (essentially unchanged)
- Most other rates: Up slightly from Monday
- Refinance rates are higher than purchase rates
- 15-year loans save huge on interest — if you can handle the payment
- ARMs aren’t currently offering a rate advantage
- Forecasts suggest rates stay near 6.5% through 2027
- Use a full mortgage calculator (with taxes/insurance) to budget accurately
- Shop multiple lenders — your rate can vary by 0.5% or more!
FAQ: Your Mortgage Rate Questions Answered
1. What is today’s 30-year fixed mortgage rate?
The national average is 6.53%, down just 1 basis point (0.01%) from yesterday.
2. Will mortgage rates go down in 2026?
Most forecasts say no significant drop. MBA expects 6.50%; Fannie Mae says 6.4%. They’ll likely hover around current levels.
3. How low could rates go by 2027?
Not much lower. MBA sees 6.5% all year; Fannie Mae is slightly more optimistic at ~6.3%. Don’t bank on a big decline.
4. Is a 15-year mortgage worth the higher payment?
Yes — if you can afford it. You’ll pay off your home in half the time and save hundreds of thousands in interest. But the 30-year with extra payments gives you flexibility.
5. Should I get an ARM to save money?
Probably not right now. ARM rates aren’t lower than fixed rates, and you take on future payment risk. Fixed is safer for most borrowers.
Final Thought: Rates are just one piece of the puzzle. Your credit, down payment, and lender choice matter a lot. Get pre-approved with 2–3 lenders to find your real rate — not just the national average.