The range also includes two fee-free 2-year fixes at 2.38% up to 65% LTV and 2.58% up to 75% LTV.
John Willcock, head of Post Office Mortgages, said: “In a competitive market it is important to stand out, and with our rates and service offering we are able to offer customers an alternative to traditional high-street lenders.
“Customers want to know they’re in safe hands when it comes to taking out a new mortgage. A big part of this is ensuring they feel reassured by the service and information they receive – and that as well as knowing they are getting the best deal.
“At Post Office, we are always looking for opportunities to review our product range so that we can offer our customers the best mortgage possible to meet their needs.”
In 2014 Post Office signed up to the Help to Buy scheme, recruited over 100 mortgage specialists and re-entered the buy-to-let market.
Wilcock added: “We are committed to offering customers the best deals and service across our full range of financial services products, whatever their needs.
“Whether they’re looking for a new mortgage, current account, or way to manage their savings, we recognise that no two customers are the same.
“By giving them the choice of contacting us online, over the phone or in one of our 11,500 branches we are able to cater to their needs.”