Principality Building Society said the changes would come into effect at 9am on 1 October, with the current range removed at 5pm on 30 September.
On the rate decrease side, within its residential range, selected rates will fall by up to 0.05%.
Its two- and five-year fixed rates at 65% loan to value (LTV) with £1,499 and £1,395 fees respectively will fall by 0.01% and 0.02%.
The lender’s two-year fixed rate at 90% LTV with no product fee will decrease by 0.04%, along with its three- and five-year fixed rates.
Principality Building Society’s five-year fixed rate at 95% LTV will go down by 0.05%.
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The firm’s two-year fixed rate residential offering with cashback at 65% LTV will reduce by 0.02%.
Within its new-build range, the two-year fixed shared ownership rate at 95% LTV will go down by 0.1%, along with its two-year fixed Help to Buy Wales product at 0.1%.
The company’s five-year fixed Help to Buy Wales product at 75% LTV will fall by 0.05%.
In its JBSP range, Principality Building Society’s two- and five-year fixed rates at 90% LTV will decrease by 0.05%.
Within its BTL range, the five-year fixed rates at 60% LTV and 70% LTV with a £1,395 fee will go down by 0.05% and 0.02% respectively.
Looking at its holiday let range, two-year fixed rates at 60% LTV will reduce by 0.1%, while its five-year fixed rate at the same LTV with a £1,395 fee will decrease by 0.05%.
The firm’s two- and five-year fixed rates at 75% LTV with no fee will go down by 0.4% and 0.2% respectively.
Regarding rate increases, residential two- and five-year fixed rates at 65% LTV with no fee will rise by 0.02% and 0.01% respectively.
At 75% LTV, its two-year fixed rate with an £895 fee will go up by 0.02%, while its two- and five-year fixed rates with no fee will decline by 0.01% and 0.02%.
The firm’s five-year fixed rates at 80% LTV will decrease by 0.02%, and its two-year fixed rates at 85% LTV will jump by 0.02%.
Its two-year fixed 90% LTV product with an £895 fee will increase by 0.02%.
Looking at its residential with cashback products, its two-year fixed rate at 80% LTV will go up by 0.02%, along with its 90% LTV version.
Within its JBSP range, two- and five-year fixed rates at 75% LTV will rise by up to 0.01%, and its five-year fixed rates at 80% LTV and 85% LTV will go up by 0.02%. The firm’s two-year fixed rate at 85% LTV will increase by 0.04%.
Principality Building Society added that its standard variable rate (SVR) will decrease to 6.8% from 6.92% and its holiday let stress rate will fall from 7.8% to 7.4%.
Earlier this month, the firm reduced selected rates by up to 0.1%.
