The changes applies to individual and limited company lending products.
For BTL portfolio landlords the limited company ICR has been reduced to 125% with it cut to 140% for an individual.
For HMOs with more than six bedrooms, the ICR is dropping to 140% for limited company and to 155% for individual applications.
Last month Hampshire Trust increased the loan-to-value and maximum value it would accept on the same product line.
The lender has also appointed Richard Winston as business development manager in its specialist mortgages team, joining from Mortgages for Business.
Winston’s previous positions include relationship management roles at Santander and HSBC.
Hampshire Trust Bank head of sales, specialist mortgages Anna Lewis said the lender had “more enhancements in the pipeline”.
“This is the latest enhancement we have made to our BTL and HMO product and we believe this will help our broker partners to better support their portfolio landlord customers.
She added: “In addition to improving and developing our products, we are focused on growing our team so we can better support our intermediaries across the country.
“We are delighted Richard has joined us, he is an excellent addition to our team.”