Principality to adjust mortgage rates from Monday 22nd September

Principality Intermediaries is set to introduce a refreshed mortgage range at 9am on Monday 22nd September 2025, with the current range closing at 5pm on Sunday 21st September.

The update brings a mix of rate cuts and rises across residential, cashback, Help to Buy (Wales), joint borrower sole proprietor (JBSP) and holiday let products.

On the reduction side, the biggest moves include a 0.10% cut to 2-year fixed holiday let deals at 60% loan-to-value (LTV).

Residential borrowers will see 5-year fixed products at 90% LTV without a fee trimmed by 0.08%, while the equivalent cashback product will fall by 0.06%.

Help to Buy (Wales) 2-year fixed rates at 75% LTV will drop by 0.08%.

In the joint borrower sole proprietor range, 5-year fixed rates at 85% and 90% LTV will be lowered by 0.06% and 0.08% respectively.

However, a series of small increases will offset these reductions.

Selected residential 2-, 3- and 5-year fixes across 65% to 85% LTV will rise by between 0.03% and 0.11%, with similar marginal uplifts in some cashback and joint borrower sole proprietor products.

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