Hello and welcome to the site. Thank you for your question.The difference is on tax relief on mortgage interest .. this would be restricted to basic rate of tax i.e. 20%.Buy to let landlords -
In a Budget the Chancellor slashed the tax relief that private landlords receive on their mortgage interest payments, cutting it from 40pc or 45pc to 20pc by April 2020.
There is some useful information here
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Sorry I just need to no the difference in numbers I cant understand this 20% or 40% tax relief at the moment I just seem to pay 20% on profit will that stay the same I am not a 40% tax payer