On September 3, 2026, Freddie Mac's weekly survey put the average 30-year fixed mortgage at 6.71%. On October 1 it was 7.28% — the highest since November 2023, and up a full quarter point in a single week. The daily lender averages that update every morning were higher still, at about 7.43% to 7.44% on October 1 and 2. Behind the move is the bond market: the 10-year Treasury yield touched 5.34% on October 1, its highest level since 2002.
For anyone shopping for a house this autumn, that is not an abstract headline. On a $400,000 loan, four weeks of rate movement added $153 a month to the payment and $55,110 to the interest over 30 years. Put the other way, the payment that bought a $500,000 house in early September buys a $472,000 one today. This guide prices the jump on three loan sizes, shows how much house the same budget now buys, and works through the three things a buyer can actually do about it: lock, buy points, or take an adjustable rate — plus the arithmetic of waiting.
Where rates areFive weeks, 57 hundredths of a point
The October 1 reading of 7.28% is the highest since 7.29% on November 22, 2023.
Show these figures as a table
| Value (% average 30-year fixed rate) | |
|---|---|
| Sept 3 — 6.71% | 6.71 |
| Sept 10 — 6.76% | 6.76 |
| Sept 17 — 6.95% — the day after the Fed hike | 6.95 |
| Sept 24 — 7.03% | 7.03 |
| Oct 1 — 7.28% | 7.28 |
Source: CalculatorAI · calculatorai.app · Freddie Mac Primary Mortgage Market Survey, releases of Sept 3 to Oct 1, 2026
Three different numbers are quoted for "today's mortgage rate" this week, and they are all correct. Freddie Mac's 7.28% is a weekly average of what lenders charged borrowers with 20% down and strong credit, collected Monday to Wednesday and published Thursday. The Mortgage Bankers Association's 7.30% is the average contract rate on applications for the week ending September 25, and it came with 0.75 points paid up front. The daily averages of about 7.44% are quotes collected from lenders each morning; they move first, and they caught Thursday's bond selloff that the weekly survey had not yet seen.
What it costsThe same loan at last month's rate and this week's
$300,000
- At 6.71%
- $1,937.82
- At 7.28%
- $2,052.64
- Extra a month
- +$114.81
- Extra interest, 30 years
- +$41,333
$400,000
- At 6.71%
- $2,583.77
- At 7.28%
- $2,736.85
- Extra a month
- +$153.08
- Extra interest, 30 years
- +$55,110
$500,000
- At 6.71%
- $3,229.71
- At 7.28%
- $3,421.06
- Extra a month
- +$191.35
- Extra interest, 30 years
- +$68,888
| Loan | At 6.71% | At 7.28% | Extra a month | Extra interest, 30 years |
|---|---|---|---|---|
| $300,000 | $1,937.82 | $2,052.64 | +$114.81 | +$41,333 |
| $400,000 | $2,583.77 | $2,736.85 | +$153.08 | +$55,110 |
| $500,000 | $3,229.71 | $3,421.06 | +$191.35 | +$68,888 |
Source: CalculatorAI · calculatorai.app · CalculatorAI arithmetic · drafts/mortgage-rate-spike-numbers.mjs
At the daily 7.44%, the gap on $400,000 widens to $196.68 a month and $70,804 over the life of the loan. A useful rule of thumb at this level: every tenth of a point is worth about $6.79 a month per $100,000 borrowed. A quote that is 0.25 points worse than another on a $400,000 loan costs about $68 a month — which is why getting three written Loan Estimates on the same day matters more this month than usual.
What it buysThe same payment, a smaller house
Most buyers do not start from a loan amount. They start from a payment they can carry and work backwards. That is where the rise does its real damage.
A $2,584 budget, before and after
In early September, $2,583.77 a month of principal and interest carried a $400,000 loan at 6.71% — a $500,000 house with 20% down. Hold the payment fixed and re-price the loan at this week's rates.
A $28,000 to $35,000 cut in budget is the difference between two neighbourhoods in many markets. It is also the number to bring into a negotiation: sellers who priced their homes in August priced them for buyers with August's rates. If you are working out how much income a given home needs in the first place, our salary-to-buy-a-home guide shows why the rate matters as much as the price.
Lock or floatWhat a quote is worth while you shop
A rate lock is the lender's promise to hold a quoted rate for a set period, usually 30 to 60 days, while the purchase closes. In a quiet market, floating — waiting to lock in the hope of a better rate — is a coin toss. In a market where the weekly average moved 25 hundredths in one week and the daily averages ran another 16 above it, it is a bet with a known downside: on $400,000, a quarter point lost while floating is about $68 a month for as long as you keep the loan.
Lock once you have an accepted offer
A lock before a contract is usually not available; after it, waiting only exposes you to moves like this week's. Ask whether the lock covers the full time to your closing date.
Ask about a float-down
Some lenders let a locked rate drop once if the market falls by a set amount before closing. It often costs a fee or a slightly higher starting rate; it is worth pricing when rates are this volatile.
Know what an extension costs
If the closing slips past the lock, an extension is typically priced as a fraction of a point. A 45-day lock that needs 60 days can cost more than a 60-day lock bought up front.
Compare Loan Estimates on the same day
Rates are re-priced daily, sometimes intraday. Two quotes taken a week apart this month differ by the market's move, not by the lenders.
PointsBuying the rate down, and when it pays back
A discount point is 1% of the loan paid at closing to lower the rate. How much one point buys varies by lender and by day; a quarter of a percentage point per point is a common rule of thumb and the assumption used here.
1% × $400,000 = $4,000$2,736.85 − $2,669.27 = $67.58$4,000 ÷ $67.58 ≈ 59 months, just under 5 yearsPoints pay only if you keep this exact loan longer than the break-even. That is the catch in a rate spike: the buyers most tempted to buy down a 7.28% rate are the ones who also hope to refinance when rates fall — and a refinance in year two throws the points away. If you expect to refinance, keep the cash; if you expect to hold the loan for a decade, a point at roughly a five-year break-even is a reasonable trade.
The adjustable optionA 0.83-point discount with a reset attached
Adjustable-rate mortgages are back in fashion for a reason. In the MBA's survey for the week ending September 25, the 5/1 ARM averaged 6.47% against 7.30% for a 30-year fixed, and ARMs rose to 10.3% of all applications — the highest share since October 2025. "ARM loans, with rates around 80 basis points lower than fixed-rate loans," said MBA economist Joel Kan, accounted for that rising share.
Cheaper for five years, unknown after
On $400,000 the payment is $2,520.39 — $221.90 a month below the fixed loan, $13,314 over the first five years. After 60 payments $374,314 is still owed, and the rate resets once a year to an index plus a margin. A reset to 7.47% makes the payment $2,758.85; to 8.47%, $3,006.52; to 9.47%, $3,262.57.
More expensive, and settled
The payment is $2,742.28 for all 360 months, whatever the bond market does. After five years $377,709 is owed. If rates fall, you can refinance; if they rise, nothing changes. You are paying about $222 a month for that certainty.
The number that decides it: if the ARM resets to about 7.58% and stays there for the remaining 25 years, it costs the same in total as the fixed loan. Below that, the ARM wins; above it, the fixed loan does. The ARM is a reasonable choice for a buyer who expects to sell or refinance within five years — and a risky one for a buyer who is choosing it only because the fixed payment does not fit the budget.
Buy now or waitThe arithmetic of waiting for 6.5%
Waiting is a decision with a price too. Rents keep being paid, and home prices do not stand still while rates move. The cleaner way to think about it: buy at today's rate only if today's payment works, and treat a future rate drop as an option you can exercise by refinancing — not as a plan.
6.75%
- New payment
- $2,597.11
- Saving a month
- $139.74
- Break-even
- 85 months
6.50%
- New payment
- $2,532.25
- Saving a month
- $204.60
- Break-even
- 58 months
6.25%
- New payment
- $2,468.09
- Saving a month
- $268.76
- Break-even
- 44 months
| Refinance rate | New payment | Saving a month | Break-even |
|---|---|---|---|
| 6.75% | $2,597.11 | $139.74 | 85 months |
| 6.50% | $2,532.25 | $204.60 | 58 months |
| 6.25% | $2,468.09 | $268.76 | 44 months |
Source: CalculatorAI · calculatorai.app · CalculatorAI arithmetic · drafts/mortgage-rate-spike-numbers.mjs
A refinance needs a real drop to pay — roughly a full point for a break-even under four years. Our refinance guide walks through the rule in detail. The other side of the ledger is the house itself: if prices in your area rise 2% while you wait a year, a $500,000 home becomes $510,000, and even at 6.75% the payment on the larger loan ($2,646) is only $91 below today's. Whether waiting wins depends on your rent, your market and how long you plan to stay — the Rent vs Buy Calculator puts those three together with your own numbers.
Where these numbers come from
Weekly rates are from Freddie Mac's Primary Mortgage Market Survey, releases of September 3 (6.71%), September 10 (6.76%), September 17 (6.95%), September 24 (7.03%) and October 1, 2026 (7.28%, with the 15-year at 6.60% and the year-ago 30-year at 6.34%). The application data, the 7.30% contract rate with 0.75 points and the 6.47% 5/1 ARM are from the Mortgage Bankers Association's Weekly Applications Survey for the week ending September 25. The daily averages of about 7.43% to 7.44% are from daily lender-rate trackers on October 1 and 2. The 10-year Treasury level is the intraday high of October 1 as reported by financial press.
Every payment uses standard amortisation, the same formula as the Mortgage Calculator. Payments are principal and interest only; property tax, insurance and PMI did not change with the rate and are left out. "How much house" assumes 20% down and holds the payment constant. Points assume one point lowers the rate by 0.25 percentage points, which varies by lender. The ARM comparison assumes a single reset that then stays put for 25 years — real ARMs reset yearly and are capped, so the outcome can be better or worse than any single row. The refinance table assumes closing costs of 3% of the balance; lower costs shorten every break-even. None of this is a recommendation of a product or a lender; a written Loan Estimate is the number to decide on.
Frequently asked questions
Why did mortgage rates go up so fast?
Fixed mortgage rates follow the 10-year Treasury yield, which touched 5.34% on October 1, the highest since 2002. Bond investors expect more Fed hikes after the September 16 increase, energy prices are keeping inflation high, and heavy government borrowing adds supply. The Fed itself does not set mortgage rates.
What is the average 30-year mortgage rate today?
Freddie Mac's weekly survey published October 1, 2026 put it at 7.28%, up from 7.03% a week earlier. Daily lender averages were about 7.44% on October 2. Your own quote depends on credit score, down payment and points.
How much does a 0.5% rate increase cost on a mortgage?
At current levels, about $34 a month per $100,000 borrowed. On a $400,000 30-year loan, going from 6.71% to 7.28% adds $153.08 a month and $55,110 of interest over the full term.
Should I buy a mortgage point at 7%?
One point on $400,000 costs $4,000 and, if it lowers the rate by a quarter point, saves about $68 a month — a break-even near 59 months. Buy points only if you expect to keep the loan longer than that and not refinance.
Is an ARM a good idea right now?
A 5/1 ARM averaged 6.47% against 7.30% for a fixed loan in late September, saving about $222 a month on $400,000 for five years. It makes sense if you expect to sell or refinance within the fixed period; if you plan to stay and the rate later resets above about 7.58%, the fixed loan ends up cheaper.
Should I wait for mortgage rates to drop before buying?
Only if the wait costs less than it saves. Refinancing later needs roughly a one-point drop to pay back its closing costs within four years, and rising home prices can offset a lower rate. Buy when the payment at today's rate fits your budget, and treat a refinance as an option, not a plan.
