How much can I borrow on a buy to let mortgage?
The amount you can borrow on a buy to let mortgage is mainly based on the monthly rental you are getting or are likely to get. This buy to let mortgage calculator will give you an idea of what you can borrrow based on the expected rental income.
Of course, some lenders are more generous than others so this estimate is to be taken purely as a guide, and some lenders will want to look at how much earned income you have from employment or self employment too.