TSB is cutting rates by up to 40 basis points tomorrow, withdrawing some deals and launching others.
Most of the changes are to its residential products, but some new buy-to-let deals are being introduced.
Its biggest reductions will be to shared ownership and shared equity products, with two-year fixes dropping by up to 40bps and five-year deals by up to 25bps.
Other substantial cuts are to remortgage rates, with five-year fixes down by up to 30bps.
Two-year fixes at 95% LTV for first-time buyers and home movers will fall by up to 20bps.
TSB is launching fee-free three-year fixes at 95% LTV for buyers and movers and withdrawing some with a £1,495 or £495 fee.
Meanwhile, Zephyr has cut rates on the majority of its fixed rate deals today.
Following the reductions its buy-to-let rates now start from 3.44%.
It has also added a number of fee-free options on two and five-year deals.
And Vida Homeloans is withdrawing its residential and buy-to-let products for a reprice.
Applications for existing products must be completed by 6pm tomorrow.