Products include 2-year fixes at 3.15% to 75% loan-to-value with a £995 fee, while the lender has also launched a tracker range.
All products in the buy-to-let range are available with free valuation and a £150 application fee.
John Heron, managing director of mortgages at Mortgage Trust, said: “Our research has consistently shown that fixed rate products remain most popular with landlords. So our new range includes 24 new fixed rates with a variety of terms and product fees.
“This range of fixed rates is one of our most competitive this year as we continue to develop our offering, ensuring we are providing intermediaries with plenty of variety to offer their landlord clients.”