The rate is offered on loans from £250,000 to £1m for individual landlords and limited companies for residential units.
The rate of 3.93% is the same for two, three and five-year fixed rates, all offered at up to 80% loan-to-value, on purchases and remortgages.
Charles Haresnape, Aldermore’s group managing director, mortgages, said: “Aldermore looks to support buy-to-let investors wherever possible, and our newest competitive rate is a sign of that commitment. By offering the same rate for two, three and five-year fixes, customers will have the flexibility to make the best decision for their situation, rather than feeling steered towards a fix that may not be a perfect fit.”
Haresnape said the numbers of buy-to-let loans granted in March held up despite all the regulatory change, and he expected to see further growth this year with most landlords see it as a long-term investment.
Earlier in April, the lender launched its bridging and property development products into Scotland.