I have actually written to HMRC but in the interim I thought I’d post here.
I have a public sector job where I earn about £40000 taxable pay. On top of that I own 2 rental properties which usually adds up to about £17000 income. Each year my tax calculation is worked out at a figure, say £2500, then they add 50% on top. Why do they charge for 150% of the tax owable? Clearly there’s something I have failed to understand. Thanks for any explanations.