s 227ZA The chargeable amount
(1) The chargeable amount is the alternative chargeable amount (see section 227B) if— (a) the year is— (i) the tax year in which the individual first flexibly accesses pension rights (see section 227G), or (ii) a tax year later than that tax year, (b) the money-purchase input sub-total (see section 227C) exceeds £10,000 , and (c) the alternative chargeable amount exceeds the default chargeable amount. (2) Otherwise, the chargeable amount is the default chargeable amount. (3) The default chargeable amount is the amount (if any) by which— (a) the total pension input amount calculated in accordance with section 229(1), exceeds (b) the annual allowance for the year in the case of the individual (see sections 228(1) and 228A). (4) If there is no such excess, the default chargeable amount is zero.