A lot of BTL mortgages are interest only so will still see significant rises.Remember that it is likely that most landlords have already paid off many years of the properties mortgage, so even with rates rising, it might only translate to £100 more per month. The worst will be landlords that have just taken a property with very little deposit, so have a huge mortgage still to go, at high rates due to being a buy to let. No idea what those landlords do. Accept 5 years that they will he paying into more of the mortgage then they wanted to as rent won't cover it all? Increase rent?