Mortgage rates ended the week higher, but the gap between lenders is the bigger story

Posted mortgage rates at the 8 lenders RateZip tracks ended the week of September 14–18, 2026 mostly higher: of the 27 posted rates with readings on more than one day this week, 0 finished lower than they started it, 11 higher, and 16 unchanged. The week’s largest move: Rocket Mortgage’s posted 15-Year Fixed, up 0.25 points to 6.625%.

Rates are each lender’s own published rate, collected each weekday from their public rate pages and feeds. Each cell shows the lender’s final posted rate / APR of the week of September 14–18, 2026 — the APR is the better cross-lender comparison, since posted rates reflect each lender’s own assumptions about credit, points, and loan size. A figure in parentheses is the change from the lender’s first to last posted rate of the week; a ‘—’ means the lender doesn’t post that product.

How we collect and publish this: our rate methodology.

By product, across the lenders that post each one:

30-Year Fixed — ended the week lower at 0 of the 6 lenders with more than one reading, higher at 2, unchanged at 4; week-ending posted rates run from 5.99% (AmeriSave) to 7.25% (Rocket Mortgage).
15-Year Fixed — ended the week lower at 0 of the 6 lenders with more than one reading, higher at 3, unchanged at 3; week-ending posted rates run from 5.125% (AmeriSave) to 6.625% (Rocket Mortgage).
20-Year Fixed — ended the week lower at 0 of the 2 lenders with more than one reading, higher at 1, unchanged at 1; week-ending posted rates run from 6.875% (U.S. Bank) to 7.125% (Bank of America).
FHA 30-Year Fixed — ended the week lower at 0 of the 2 lenders with more than one reading, higher at 1, unchanged at 1; week-ending posted rates run from 6.25% (New American Funding) to 7.125% (U.S. Bank).
VA 30-Year Fixed — ended the week lower at 0 of the 4 lenders with more than one reading, higher at 2, unchanged at 2; week-ending posted rates run from 6.375% (New American Funding) to 6.75% (U.S. Bank).
7/6 ARM — ended the week lower at 0 of the 3 lenders with more than one reading, higher at 0, unchanged at 3; week-ending posted rates run from 6.5% (Bank of America) to 7.25% (U.S. Bank).

Related: Today’s mortgage rates

The week’s biggest lender moves: Rocket Mortgage’s 15-Year Fixed went from 6.375% to 6.625% (+0.25); FourLeaf Federal Credit Union’s HELOC (variable) went from 6.75% to 7% (+0.25); U.S. Bank’s FHA 30-Year Fixed went from 6.99% to 7.125% (+0.135).

Across the week, posted 30-year fixed rates in the tracked set ran from 5.99% (AmeriSave) to 7.375% (Bank of America). At the week’s close, the gap between the cheapest and most expensive posted 30-year rate is 1.26 points (AmeriSave at 5.99% vs Rocket Mortgage at 7.25%) — on a $400,000 loan, about $333 a month. That spread is larger than any single lender’s 30-year move this week — lender shopping still matters more than timing.

Week over week — each rate’s closing level against the same lender’s posted rate a week earlier — 0 of the 27 tracked rates with a prior-week reading ended lower, 22 higher, and 5 unchanged. The largest week-over-week change: Rocket Mortgage’s 15-Year Fixed, up 0.375 points.

AmeriSave also posts refinance pricing: 30-year fixed ending the week at 6.375% (6.882% APR) and 15-year fixed ending the week at 5.625% (6.487% APR).

In the broader market, the 10-year Treasury yield — the benchmark long-term mortgage pricing most closely tracks — ended the week at 4.94% (close of Thursday, September 17, per FRED), down 2 basis points from the prior week’s last close. That is not a move that repriced the market: there is no clear macro driver behind this week’s posted-rate changes, and week-to-week drift of this size is routine lender-level pricing.

Where borrower demand is heading: RateZip’s Mortgage Demand Index — built from the mortgage inquiries consumers submit across our network — shows August 2026 inquiry volume 11% higher than July 2026’s and 157% higher than August 2025’s. Behind the total: home-equity products (HELOC plus reverse) drew 76% of inquiries over the three months through August 2026, versus 43% in the same months a year earlier; refinance went from 39% to 2% of the mix. Product-level detail and the full series are on the index page.

RateZip is operated by Peklava LLC, DBA RateZip, a licensed mortgage broker (NMLS ID 1592292). We are compensated by some of the partners shown on this page, which may affect which offers appear and where. It does not affect our reporting or our recommendations. Rates shown were last updated September 19, 2026 at 9:50 a.m. ET. See our editorial standards and how we use AI.

How we track rates: methodology. Found an error? Tell us.

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This article originally appeared on RateZip and was syndicated by MediaFeed.co.