I wonder if someone would care to explain this to me:
I am an emplyee and pay tax at the 40% rate. and I have some savings and investment income. The HMR+C have written to me saying they will not be sending me further tax returns. They say that I should request one if (among other things) my savings and investment income exceeds £10,000.
My savings income is taxed at source, but not at the 40% rate (I think). if this income is less than £10,000 how is the extra tax collected? How do they know about it unless I tell them?
Do they assume that this income is going to be the same every year, and adjust my tax code accordingly?
puzzled, Cambridge