The lender, which is part of Nationwide Building Society, is reducing rates for selected limited company and 80% loan to value (LTV) mortgages by up to 0.10%.
It has also added a cashback option of £1,000 on some deals.
A range of limited company options are also being introduced, including those with a £995 fee and a five-year fixed rate houses in multiple occupation (HMO) product.
It is also adding 65% LTV HMO products with a £995 fee and a five-year fixed-rate further advance product for existing customers, with rates starting at 2.79% with a 1% fee.
TMW managing director Paul Wootton (pictured) said: “These changes are aimed at supporting landlords with varied needs and requirements, helping them to access a choice of products with competitive rates and to manage their cashflow.
“With ongoing improvements to our product proposition, this further illustrates TMW’s continued commitment to supporting intermediaries and landlords.”