The bank has reduced rates on its 90 per cent LTV five-year fix by 0.4 per cent for purchase and remortgage.
For new lending the rate is now 3.59 per cent, while for remortgaging it is at 3.64 per cent.
Metro has also adjusted its interest-only offering by allowing debt consolidation as a borrowing reason.
The maximum age at the end of the mortgage term is now 80 for all repayment types, and part and part is now available up to 75 per cent LTV when using sale of subject property with a minimum property value of £600,000.
Metro Bank director of mortgage distribution Charles Morley said: “Right now there are plenty of borrowers with smaller deposits looking for a mortgage.
“Metro Bank is proud to continue to support these customers, as they move to a new home or look to jump on the housing ladder for the first time.
“We have really exciting plans to improve our specialist mortgages range in 2021 and the new products that you’ll see will be as individual as our customers are.”
Last year Metro made its first change aimed at pushing it more towards the specialist lending market by easing its buy-to-let stress test and it is continuing to hire people to tackle that approach.
The lender has also widened its distribution by adding Brilliant Solutions to its intermediary panel.
Metro’s products will be available through the Brilliant mortgage club and its packaging.
Matthew Arena, managing director of Brilliant Solutions, said: “Metro Bank is a lender with plenty to offer in the market and importantly, one that values intermediaries.
“The commitment Metro Bank has to this sector and its plans for 2021 and beyond make this a lender that all intermediaries will be even closer to in the years ahead.”
Morley added: “We’re thrilled to be working more closely with Brilliant Solutions as they join our intermediaries’ panel.”