KEY
TR tax refund of half of tax credit (20% less 10%)
NR no refund of tax credit
NETTP no extra tax to pay, over and above tax credit
ETTP 1 extra tax to pay of 20% times gross savings income which
falls above higher rate threshold =25% of net
ETTP 2 extra tax to pay of 22.5% times gross dividends which fall
above higher rate threshold =25% of net
Note: Dividends/savings are usually treated as top slice of income.
Personal allowances are set off first in way most beneficial to
taxpayer - ie usually against earned income first.
