It is also cutting rates on a number of its fixed-rate mortgages whilst reducing or removing arrangement fees on selected products.
Highlights include a 75% LTV 5-year fixed rate at 2.98% and a 75% LTV 3-year fixed rate at 2.68%, both products have a £995 fee.
John Willcock, head of Post Office Mortgages, said: "These mortgage rates are among the most competitive deals available in the market. We are committed to helping as many borrowers as possible find an affordable mortgage that meets their needs.
“This commitment is reflected in the service and rates we are able to offer which appeal to all types of borrowers, whether they are a first time buyer with a small deposit, a mover or a remortgage customer with more equity.”
