QUOTE(cells @ Aug 4 2007, 01:13 PM)

don’t forget you get interest on the amount that would have been taken by tax too
for example you have 100k here at 6%. that is £6000 interest, but 20% is taken out for tax so your left with £4800. so the second year you have 104.8k in the bank and get 6% interest on that
but offshore, you get 106k at the end of the first year, and then 6% interest on 106k apposed to 104.8k
Blimey. You're right. I hadn't thought of it like that. So even if your tax circumstances don't change, provided deferring for "n" years doesn't change the tax band you'll pay tax in, you'll get "n" years of compounding at the gross rate.
You wonder why people bother with trying to get 10% YOY from the stock market paying 40% tax when realising their capital gains in cash, when you can get effectively more than this right now, YOY, for no risk, just by saving offshore.