The lender said the changes would come into effect from 26 March.
Two-year residential purchase exclusive rates will be cut by up to 0.05%, and on the professional side, two- and five-year residential professional rates from 65% to 80% loan to value (LTV) will be reduced by around 0.37%.
Two- and five-year residential newly qualified professional rates at 90% LTV will be cut by 0.03%.
Last week, the firm announced rate cuts for select products.
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Principality BS to cut select rates by 0.35% and up some deals by up to 0.12%
Principality Building Society will reduce select residential mortgages and joint borrower sole proprietor (JBSP) mortgages by around 0.35%, while some deals will be decreased by around 0.12%.
On the residential mortgages side, two- and five-year fixed rates at 65% LTV will be lowered by 0.01% and 0.19%.
At 75% LTV, five-year fixed rates at 75% LTV will be lowered by around 0.17%.
Two- and three-year fixed rates at 80% LTV will be cut by around 0.06%, and five-year fixed rates at the same LTV will be cut by around 0.13%.
At 85% LTV, two-year fixed rates will decrease by 0.29% and three- and five-year fixed rates will be lowered by around 0.16%.
Going up to 95% LTV, two-year fixed rates will fall by around 0.25% and five-year fixed rates will be cut by around 0.15%.
For residential mortgages with cashback, five-year fixed rates at 65% LTV will be cut by 0.11%, while it will be 0.16% at 75% LTV and 0.13% at 80% LTV.
Two- and five-year fixed rates at 85% LTV will fall by around 0.15%.
JBSP deals will decrease by around 0.35%, with the biggest cut being for two-year fixed rates at 85% LTV. Five-year fixed rates at the same LTV tier will go down by around 0.19%.
At 75% LTV, five-year fixed rates will decrease by around 0.17% and two- and five-year fixed rates at 80% LTV will fall by around 0.01% and 0.13% respectively.
Principality Building Society will increase select residential mortgages, including its two-year fixed rate at 65% LTV with a product fee by 0.02% and its two-year fixed rate at 75% LTV by up to 0.04%.
The lender’s residential mortgages with cashback, including its two-year fixed rates at 65% and 75% LTV, will rise by 0.1% and 0.12% respectively.
On the JBSP side, the firm’s two-year fixed rate at 75% LTV will go up by 0.03%.
