The bank has reduced its rental cover requirements and increased the maximum loan-to-values to 75% from 60%.
The banks fresh products are a 60% LTV 2-year fix at 2.19% with a £1,999 fee, a 60% LTV 5-year fix at 3.29% with a £1,999 fee and a 75% LTV 2-year fix at 2.79% with a £1,999 fee.
Tracie Pearce, head of mortgages at HSBC, said: "We’ve sharpened our offering and expect to be able to help even more customers achieve their buy-to-let ambitions.
“The availability of buy-to-let products is now at its highest point since 2008. High rents and low interest rates mean customers are increasingly seeing buy-to-let as an attractive investment opportunity.
“The policy and pricing changes we have made will make our range available to even more people.”