If you’re staring at today’s 15-year fixed mortgage rates and wondering whether to jump or wait, you’re not alone. The gap between a 15-year and a 30-year loan can mean hundreds of dollars a month and six figures of interest. But acting on a rate quote without a plan is how people leave money on the table. This walkthrough gives you a concrete, step-by-step process to evaluate the rate, compare offers, and lock in a payment you can live with.
We’ll use real numbers: a $350,000 loan, a borrower with a 740 credit score, and rates that look like what lenders are actually posting. By the end, you’ll know exactly how to turn a headline rate into a signed deal.
Step 1: Get a Real Read on 15-Year Fixed Mortgage Rates Today
Headline rates are a starting point, not a quote. On any given morning, you’ll see 15-year fixed rates ranging from 5.875% to 6.5% depending on the lender, your profile, and whether you’re paying points. Before you call anyone, check three sources: a major bank, a credit union, and an online broker. Write down the rate, the APR, and the points quoted.
Don’t assume the lowest rate is the best deal. A quote with a lower rate but $4,000 in points might cost more over five years than a slightly higher rate with no points. That’s why a closer look at how a 15-year fixed loan actually works matters before you get attached to a number.
Step 2: Pull Your Own Numbers Before You Talk to a Lender
Lenders price your loan based on four things: credit score, loan-to-value ratio, loan amount, and property type. Get your middle credit score from all three bureaus. If it’s 740, you’re in the best pricing tier. If it’s 680, expect to pay 0.25% to 0.5% more in rate.
Next, decide on your down payment. On a $400,000 home, putting 20% down ($80,000) gives you a $320,000 loan and avoids mortgage insurance. Putting 10% down means a $360,000 loan, a higher rate, and PMI. Run both scenarios so you know the real monthly cost.
Here’s a quick example. On a $350,000 loan at 6.25% for 15 years, the principal and interest payment is about $3,002. On a $350,000 loan at 6.75% for 30 years, it’s about $2,270. The 15-year costs $732 more per month, but saves roughly $276,000 in interest. That trade-off is the heart of the decision.
Step 3: Collect and Compare at Least Three Loan Estimates
Within three business days of applying, each lender must send you a Loan Estimate. Put them side by side. Look at these lines first:
- Interest rate and APR – the APR includes fees, so it’s a better apples-to-apples number.
- Origination charges – these can range from $0 to $2,000 or more.
- Points – one point equals 1% of the loan amount and typically lowers your rate by 0.25%.
- Third-party fees – appraisal, title, and credit report costs vary by lender.
- Lock period and extension fees – a 30-day lock is cheaper than a 60-day lock but riskier if your closing slips.
If you want a structured way to do this, this six-step mortgage shopping walkthrough uses the same side-by-side method with real loan estimates.
Step 4: Calculate the Break-Even on Points and Fees
Say Lender A offers 6.25% with no points and $1,200 in closing costs. Lender B offers 5.875% with one point ($3,500) and $1,200 in closing costs. The lower rate saves you about $75 per month on a $350,000 loan. To recover the $3,500 point, you need 47 months (almost four years). If you plan to stay in the home longer than that, buying the point makes sense. If you might refinance or sell in three years, take the no-point option.
This is also where you should understand what’s moving the market. When you see 15-year fixed mortgage rates today, they’re tied to the 10-year Treasury yield, inflation reports, and Fed expectations. Pulling your own quote apart to see the drivers helps you know whether to lock now or float.
Step 5: Use a Historical Chart to Time Your Lock
No one can predict rates perfectly, but you can avoid locking at a local peak. Pull a 12-month chart of 15-year fixed rates. If today’s rate is in the bottom third of that range, locking is a solid move. If it’s in the top third, you might float for a week or two, but set a limit: if the rate drops 0.125%, lock immediately.
For a deeper method, reading a historical mortgage rates chart before you lock shows you how to spot trends without overthinking them.
Step 6: Lock the Rate and Confirm the Numbers in Writing
Once you decide, ask for a written rate lock confirmation. It should list the rate, the APR, the lock expiration date, and the cost of any extension. Check that the loan amount and term match your Loan Estimate. If the lender tries to add fees at the last minute, push back. A good faith estimate is not a final offer, but it is a strong baseline.
One more move: ask if the lender offers a float-down option. This lets you get a lower rate if rates drop before closing, usually for a small fee. On a 15-year loan, even a 0.125% drop saves about $25 per month, which adds up.
Putting the Steps to Work
Imagine you’re three weeks from closing. You’ve got three Loan Estimates. Lender A: 6.25%, no points, $1,400 fees. Lender B: 6.0%, 0.5 points, $1,800 fees. Lender C: 6.125%, no points, $1,600 fees. You plan to stay 10 years. The break-even on Lender B’s points is about 23 months, so it wins on total cost. You lock with Lender B, get a float-down, and set your first payment for the 1st of the month.
That’s the whole game: know today’s 15-year fixed mortgage rates, compare the full cost, run the break-even, and lock with confidence. No guesswork, no regret.