How mortgage rates are set and why they move
Mortgage rates are set by lenders, but they follow what investors in the bond market will pay for mortgage loans, plus the lender's costs and your own risk profile. That is why the same day can bring a different rate for you than for your neighbor. Rates can change daily, sometimes more than once a day.
Tell me what you are looking for and I will help you narrow it down. Start with the buyer consultation form.
Three layers behind a rate
The market layer. Lenders sell most loans to investors, so the price investors will pay sets a baseline. That price shifts with inflation news, jobs reports, government borrowing and global events.
The lender layer. Each lender adds its costs, its profit and its appetite for new loans. That is why two lenders can quote different rates on the same day.
The borrower layer. Your credit score, down payment, loan size, the type of home and how you will use it all change the price of your loan.
What the weekly survey tells you
Freddie Mac publishes the average 30-year fixed rate each week from loan applications it receives. It reported 7.40% as of October 15, 2026, unchanged from the prior week, compared with 6.27% a year earlier. It is released Thursdays at noon Eastern and averages applications from the prior Thursday through Wednesday. See the current figure at Freddie Mac. It is a useful gauge of direction. It is not your quote.
Why rates move day to day
Mortgage rates respond to information that changes investor expectations about inflation and growth. Strong or weak economic reports, central bank statements and global events can all matter. Since lenders reprice as markets move, a rate you saw yesterday may not be available today. This is why the CFPB explains that rates can change daily, and why a rate lock exists. See the CFPB explanation of a rate lock, last reviewed May 2023.
What you can control
Your credit. Ask your lender what moves your price and when to check it. Do not open new credit before closing.
Your down payment. A larger down payment can change the loan's pricing, though how much depends on the lender and loan type.
Your loan type. Conventional, FHA and VA loans are priced differently.
Your shopping. Compare Loan Estimates from more than one lender on the same day.
Your lock. Ask when to lock and what an extension costs.
What you cannot control
You cannot control inflation reports, central bank decisions or world events. That is why building a budget that still works if rates are higher than you hoped is a sensible habit. I do not predict rates, and I would not trust anyone who promises where they are going.
Points and buydowns
Lenders may offer a lower rate in exchange for paying points at closing, and builders or sellers sometimes pay for a buydown. The tradeoff is cash now for a lower payment later. Whether it pays off depends on how long you keep the loan. I cover this in rate buydowns explained.
A simple way to use this
Treat the weekly survey as the weather report and your Loan Estimate as your actual forecast. Use the first to understand direction and the second to make a decision. When you are ready to see real numbers, I can introduce you to lenders I work with, and you stay free to choose any lender.
A checklist for comparing quotes
Get quotes from at least two or three lenders.
Ask for them on the same day with the same loan amount, loan type and credit assumptions.
Compare the rate, the points and the fees together.
Ask how long the quote is good for.
Ask when you can lock and what a lock costs.
An illustrative lock timeline
These dates are examples only. Suppose your closing is 35 days away. A lender may offer a lock that covers 45 days. If you lock on day 1, the rate is protected through closing, and if a delay pushes closing past the lock you may pay to extend. If you wait to lock, you accept that the rate can rise or fall in the meantime. Ask your lender what fits your closing date.
My take: [ROB INPUT: add one or two sentences of your own view before this is published.]
Frequently asked questions
Who decides the mortgage rate?
Your lender sets your rate, based on investor pricing, its own costs and your profile. No single person or agency sets it.
Why did my rate quote change overnight?
Lenders reprice when markets move. An unlocked rate can change at any time.
Does the Federal Reserve set mortgage rates?
No. It influences the wider economy and short-term rates, but mortgage rates are set by the market and lenders. I explain more in what the Federal Reserve does and does not do.
Sources, checked October 21, 2026
Where to go next
Keep reading: what the Federal Reserve does, rate buydowns explained, what rates mean for your payment. Browse all posts in Market and rates.
Tell me what you are looking for and I will help you narrow it down. Start with the buyer consultation form.
This is general information, not lending, tax or legal advice. Talk to your lender, your CPA and your South Carolina closing attorney about your own situation. Rob "Red" Redziniak, Keller Williams Greater Charleston, Dave Friedman Team.
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