You went under contract when rates felt manageable. Now you're watching them climb - and you keep refreshing your email wondering if your lender is about to say the number got worse.
Here's what you need to know: mortgage rates just hit their highest point in six months. The 30-year fixed is running 6.44-6.66% as of March 31, 2026, and the 10-Year Treasury is sitting at 4.34%. The Fed paused at 3.50-3.75% and no cut is expected until June at the earliest.
The question isn't whether to eventually lock your rate. The question is whether locking right now - today - is the right call, or whether floating a few more days could save you money. I'm going to give you a direct answer based on what the market is doing this week.
What "Locking Your Rate" Actually Means
A rate lock is a commitment from your lender: your interest rate will not change between now and your closing date, for a set window. Standard lock periods are 30, 45, or 60 days.
- It protects you if rates rise - you keep the rate you locked regardless of what the market does.
- You give up upside if rates drop - once locked, you're committed to that rate unless your lender offers a float-down provision.
- A 30-day lock is essentially free - the cost is built into your rate, and for short windows it's negligible. Longer locks (45-60 days) may carry a small premium.
- You can't lock until you're in contract - once you have a signed purchase agreement, you can lock any time before closing.
- The lock is confirmed in writing - your Loan Estimate will update to reflect the locked rate. Until you have that in writing, it's not locked.
What Rates Are Doing Right Now (March 31, 2026)
The numbers are not friendly right now - but they're also not surprising. Here's the current picture:
| Benchmark | Current Level | Direction |
|---|---|---|
| 30-Year Fixed (Purchase) | 6.44-6.66% | 6-month high |
| 30-Year Fixed (Refi) | 6.75-6.85% | Declining demand |
| 10-Year Treasury | 4.34% | Up 2 bps |
| Federal Funds Rate | 3.50-3.75% | Paused |
| Next Fed Cut Expected | June 2026 (earliest) | - |
Rate ranges reflect current market observations as of March 31, 2026. Rates change daily. Your actual rate depends on your credit profile, loan type, down payment, and lender. These are not a commitment to lend or a guarantee of terms.
The driver is geopolitical energy volatility combined with the Fed's "higher for longer" posture. Bond yields stay elevated when inflation fears stay elevated. There is no economic release on the calendar in the next two weeks that is likely to meaningfully reverse that.
For the full weekly rate breakdown, see this week's Rate Watch.
Lock or Float - The Decision Framework
For most buyers right now, the answer is: lock. Here is exactly who falls into each category.
Lock now if:
- Your closing is within 60 days
- You cannot absorb a higher payment if rates move another 0.25%
- You're a first-time buyer on a tight debt-to-income ratio
- You've already negotiated your purchase price - waiting does not improve the deal
- You don't have a float-down provision built into your lock agreement
Float if (narrow conditions):
- Your closing is 90+ days out and you have written float-down protection
- A specific economic release in the next 7-10 days (jobs report, CPI) has a real chance of pushing rates down - right now there isn't one
- Your lender offers a free float-down at no additional cost within the lock period
Most buyers in contract today are not in the "float" scenario. If your closing is in the next 30-60 days and you don't have float-down protection, locking now is the right call. Waiting for a Fed cut that isn't coming until June is not a strategy - it's a bet.
This is not personalized financial advice. Your situation depends on your loan type, credit profile, closing timeline, and lender-specific lock policies. Consult your loan officer for guidance specific to your transaction.
The Move Most Buyers Overlook: Seller-Paid Buydowns
Locking your rate and lowering your rate are two different tools. Most buyers only think about one.
Right now, 22% of active listings have seen price cuts. Sellers are motivated. That creates a negotiating window that has nothing to do with waiting for the Fed.
A seller-paid 2-1 buydown can reduce your effective interest rate in year one and year two of your loan - funded by the seller as a concession rather than a price reduction. At current rates, this is often a better outcome than waiting for organic rate drops that may not come before your closing date.
The short version: lock your rate today, and separately negotiate whether the seller pays a buydown on your deal. These are not mutually exclusive. They work together.
How to Lock Your Rate - The Practical Steps
- Call or email your loan officer and say: "I'd like to lock my rate today. What's the current rate and what lock period options do I have?"
- Confirm the lock period covers your closing date plus a 7-day buffer. If your closing is May 15, your lock should run through at least May 22.
- Get the lock confirmation in writing. Your updated Loan Estimate will show the locked rate. Until that document is in your hands, the rate is not locked.
- Ask about float-down options. "If rates drop more than X% before closing, do I have any ability to re-lock at the lower rate?" Not all lenders offer this - find out now, not at closing.
- Do not wait for "the perfect moment." There is no signal on the calendar for rates to meaningfully drop before most buyers' current closing dates.
You're Under Contract
Let's Lock It.
If you're in contract right now and watching rates move, bring me your closing date and loan amount. I'll show you your lock options and whether a seller-paid buydown makes sense on your specific deal. No application required.
Get My Lock Options →Frequently Asked Questions
Can my locked rate change after I lock?
Once confirmed in writing by your lender, your rate is protected for the lock period. It cannot increase due to market movement. If your closing is delayed and you need to extend the lock, there may be a small extension fee - typically a fraction of a percent of the loan amount per week of extension.
What happens if rates drop after I lock?
Without a float-down provision, you keep the rate you locked. Some lenders offer a one-time float-down: if rates drop by a defined amount (usually 0.25-0.50%) before closing, you can re-lock at the lower rate. Ask your loan officer whether this option is available and what the trigger conditions are before you lock.
How much does a rate lock cost?
A standard 30-day lock is typically free - the minimal cost is built into your rate and not itemized separately. Longer lock periods (45-60 days) may carry a small premium, usually reflected as a slightly higher rate rather than an upfront fee. Ask your lender to quote you both the 30-day and 45-day lock options so you can compare.
I haven't found a house yet - should I lock?
You cannot lock a rate without a signed purchase agreement - there's no property to attach the loan to. What you can do is get fully pre-approved so you're ready to lock the moment you go under contract. In a market where rates are moving fast, that head start matters.
Is a 6.44% rate actually bad?
It's the highest in six months, but it's not historically extreme. The real question is whether it fits your payment. What most buyers miss is that rate is only one variable - purchase price, seller concessions, and down payment all affect your monthly payment just as much. A 6.5% rate with a seller-paid buydown can outperform a 6.0% rate on a stale list price you overpaid for.