Diane is self-employed and a member of three registered pension schemes. Her pension input amounts for 2017-18 for each of these schemes are as follows:
Scheme A: £12,500 Scheme B: £4,400 Scheme C: £11,600 Diane's "adjusted income" for 2017-18 is £206,000 and her marginal rate of income tax for the year is 45%. Her "threshold income" for 2017 -18 exceeds £110,000. Compute the annual allowance charge for the year, assuming that there is no unused annual allowance to bring forward from the previous three years.