With the spring Budget less than two weeks away, it's easy to forget some major changes due to come in this spring unlikely to be changed by the Chancellor.
Property Interest Tax Relief - Full restriction
Four years ago this seemed a long way off, but we're now here. From April, there will be no tax deduction for interest on your buy-to-let mortgage. You'll get a calculated tax credit at 20% offset against your tax bill, but your taxable income is reduced only by repairs, professional fees, void period costs, etc.
This means you're more likely to find yourself in the higher rate tax band than before or having to pay back child benefit. Or even at the £100k threshold where your tax free personal allowance starts to get taken away.