Mortgage rates today, September 18, 2026, put the latest published Optimal Blue 30-year conforming benchmark at 7.05%, dated Wednesday, September 16, with the 15-year fixed at 6.44% and Bankrate’s national average 5/1 ARM APR at 6.72%. The 30-year reading is a new one-year high and comes from the session in which the Federal Reserve raised its target range by a quarter point to 3.75%–4.00%. Thursday’s mortgage observation, the first full session after the decision, publishes later today. That lag matters because the 10-year Treasury fell to 4.94% Thursday from 5.01% Wednesday, so live lender pricing may already look different from the published 7.05% benchmark.
Mortgage Rates Today: What’s Trending
The published 30-year benchmark has now risen for five consecutive observations, from 6.88% on September 10 to 7.05% on September 16. At 7.05%, a $400,000 30-year loan costs about $2,675 a month in principal and interest. A $400,000 home bought with 20% down, a $320,000 loan, costs about $2,140 a month.
Today’s rate in context
On the comparable market date a year ago, the Optimal Blue 30-year benchmark was about 6.17%. A $400,000 loan at that rate cost roughly $2,442 a month. At 7.05%, the same loan costs about $233 more each month, or roughly $2,791 more over a year.
What to do right now
The published benchmark is at a one-year high, but Thursday’s Treasury move points the other way: the 10-year yield fell seven basis points to 4.94% after the Fed day. If you are shopping today, treat 7.05% as the latest published national lock benchmark, not as a promise of what a lender will quote after Thursday’s bond rally. Re-run the quote before comparing lenders.
Where Rates Are Headed
The same-day comparison on Wednesday is 7.047% for the Optimal Blue 30-year benchmark against a 5.01% 10-year Treasury yield, a mortgage-to-Treasury spread of roughly 204 basis points. On Thursday, the 10-year fell to 4.94%, but the corresponding mortgage observation has not published yet, so a current same-day spread cannot be calculated without mixing dates.
What could move rates next
Industrial production and capacity utilization are scheduled for 9:15 a.m. Eastern today. After Wednesday’s Fed hike and Thursday’s bond rally, the immediate question is whether incoming growth data reinforce that rally or push yields back toward 5%. Mortgage rates do not move mechanically with the federal funds rate; the faster signal for today’s pricing remains the Treasury and mortgage-backed-securities market.
What’s Moving the Market
The Federal Reserve raised the federal funds target range by 25 basis points to 3.75%–4.00% on Wednesday in a unanimous 12–0 vote. The same morning, August retail sales had shown a strong 1.2% monthly increase. Yet long-term yields did not keep climbing after the meeting: the 10-year Treasury eased from 5.01% Wednesday to 4.94% Thursday, while the two-year fell from 4.74% to 4.67%.
The driver right now
Thursday’s housing report added a mixed growth signal. Total housing starts fell 2.6% in August to a 1.275 million annualized pace and permits fell 2.7%, while single-family starts rose 7.6%. The market now moves into Friday’s industrial-production release with a simple question: does the post-Fed Treasury rally hold? For mortgage borrowers, that answer matters more immediately than the fact that the Fed moved its overnight policy rate higher.
What This Rate Means for Homebuyers
At 7.05%, a $400,000 home with 20% down produces a $320,000 loan and roughly $2,140 a month in principal and interest. Financing the full $400,000 would cost about $2,675 a month. Those calculations use the latest published Optimal Blue benchmark; a live Friday lender quote may already reflect Thursday’s lower Treasury close.
Lock or float?
A year ago, a $320,000 loan at roughly 6.17% cost about $1,954 a month. At 7.05%, the payment is about $2,140, roughly $186 more each month.
Smart shopping moves
If your closing is inside 45 days and the payment works, locking is the more conservative choice after a run to a one-year high. Thursday’s Treasury rally is a reason to re-quote before locking, not a guarantee that rates will keep falling. With 60 days or more, remaining unlocked can be reasonable if your budget can absorb a higher rate; a float-down, where offered, is a separate post-lock feature with its own rules and cost.
For First-Time Homebuyers
A $285,000 starter loan costs about $1,906 a month at 7.05%. Program choice matters at this rate level: on the latest Optimal Blue indices, FHA averaged about 6.76% and VA about 6.69%, roughly 28 and 36 basis points below the conforming benchmark. The lower rate does not automatically mean the lower total cost, because mortgage insurance, funding fees and eligibility differ by program.
Getting in with less down
FHA’s minimum standards remain 3.5% down with a credit score of at least 580, and generally 10% down for scores from 500 to 579; borrowers below 500 do not meet FHA’s minimum credit-score standard. Individual lenders may impose stricter requirements. Compare the total monthly payment, not just the headline rate.
What This Rate Means for Refinancers
A $350,000 balance at 7.25% costs about $2,388 a month in principal and interest. At 7.05%, the same balance costs about $2,340, a reduction of only about $47 a month.
Is it worth it yet?
At that savings level, closing costs can take a long time to recover. Divide total refinance costs by the monthly savings to estimate break-even in months, then compare that with how long you expect to keep the loan. The decision improves quickly if your existing rate is materially above 7.25%, but it should still be made from costs, savings and holding period rather than a universal rate threshold.
For Real Estate Investors
Illustrative investor pricing, roughly 60 basis points above the latest conforming benchmark, would put the example rate near 7.65%. A $225,000 loan at that rate costs about $1,596 a month before taxes, insurance, maintenance and vacancy.
Making the numbers work
Underwrite to a rate a lender will actually lock, not to the lower Treasury yield you hope will reach rate sheets later. If Thursday’s bond rally carries into mortgage pricing, treat a better quote as upside to the deal rather than an assumption required to make the property pencil.
Quick Tips by Buyer Type
15-Year vs 30-Year: Which Is Right for You?
A $350,000 loan over 30 years at 7.05% costs about $2,340 a month and about $492,516 in total interest. The 15-year at 6.44% costs about $3,037 a month and about $196,722 in total interest, a lifetime interest difference of roughly $295,795.
Who the 15-year fits
The 15-year benchmark sits about 61 basis points below the 30-year. That discount is meaningful, but the monthly payment is almost $700 higher on a $350,000 loan. The shorter term fits borrowers whose budget can comfortably carry the required payment; the interest saving is the benefit, not a reason to stretch cash flow.
Why Mortgage Rates Can Ease Even After a Fed Hike
The Fed raised its overnight policy rate on Wednesday, but the 10-year Treasury fell from 5.01% that day to 4.94% on Thursday. That is not a contradiction. Fixed mortgage rates are priced off longer-term bond and mortgage-backed-securities markets, which react to the Fed’s action, its guidance, inflation expectations, growth expectations and investor demand—not just the new federal funds target.
What it means for you
Freddie Mac’s weekly survey, released Thursday, put the 30-year fixed at 6.95%, while the latest daily Optimal Blue benchmark is 7.05%. The gap reflects different timing and methodology. A borrower making a decision today should focus on a live Loan Estimate or lender quote and use the national benchmarks to understand direction, not to assume every lender should match one published number.
What would change it
If the 10-year holds near or below Thursday’s 4.94% close, the next daily mortgage observations could show some relief. If growth data push yields back above 5%, that relief can disappear before it reaches every lender. The direction is observable; the size and timing of the pass-through are not guaranteed.
Rate Lock Tips
The Bottom Line
The latest published Optimal Blue 30-year conforming benchmark is 7.05%, dated Wednesday, September 16, with the 15-year at 6.44%. The 30-year is at a new one-year high, and a $400,000 loan costs about $2,675 a month in principal and interest at that rate. But Thursday’s 10-year Treasury close at 4.94% was seven basis points below Wednesday, so the next published mortgage observation may tell a softer story than the current headline.
Your move
If you are closing soon, get a fresh quote today and compare it with the published 7.05% benchmark before deciding whether to lock. If you have more time, the key is whether Thursday’s Treasury rally survives today’s industrial-production data and carries through to lender rate sheets.
What to watch next
Watch the September 17 Optimal Blue observation when it publishes, industrial production at 9:15 a.m. Eastern, and the 10-year Treasury reaction afterward. Those three pieces will show whether the post-Fed decline in long-term yields is turning into actual mortgage-rate relief.
Frequently Asked Questions
What are mortgage rates today for a 30-year fixed?
The latest published Optimal Blue 30-year conforming benchmark is 7.05%, based on the September 16 observation. Live September 18 lender quotes may differ because the September 17 benchmark has not yet published.
What are mortgage rates today for a 15-year fixed?
The latest published Optimal Blue 15-year conforming benchmark is 6.44%, also based on the September 16 observation. It is a note-rate benchmark, not an APR.
Did the Fed raise rates this week?
Yes. On September 16 the Federal Reserve raised the federal funds target range by 25 basis points to 3.75%–4.00%. Mortgage rates do not move one-for-one with that policy rate; longer-term Treasury and mortgage-backed-securities markets matter more directly for fixed mortgage pricing.
Should I lock in mortgage rates today?
That depends on your closing timeline and risk tolerance. If you are closing soon and today’s payment works, locking can be the more conservative choice. Because Treasury yields fell Thursday, get a fresh lender quote before locking rather than relying only on the lagged national benchmark.
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30-year and 15-year figures are note rates from Optimal Blue. The 5/1 ARM figure is Bankrate’s national average APR as of September 18, 2026; the sources use different methodologies and date bases and are not directly comparable. Sources & further reading: Optimal Blue (OBMMI) via FRED, U.S. Treasury Daily Rates, Federal Reserve September 16 FOMC statement, U.S. Census New Residential Construction, Freddie Mac PMMS, and Bankrate 5/1 ARM rates.














