The process is:
EG – Let us assume that Stewart’s target net income is still £10,000 net of basic rate tax and the best annuity rate available to him is still 5.8%. The calculation would now be carried out as follows:
Our target income is net of basic rate tax so we deduct 20% from the gross annuity income to arrive at a net income figure of £4.35 × 80% = £3.48
This gives us a net income of £25 + £3.48 = £28.48 for every £100 of fund, or, put another way, gives us an ‘annuity rate’ of 28.48%.