I agree with Guya 100%.
I would further recommend that if you owe money on your UK return, you should pay the tax 31 Dec 07 rather than 31 Jan 08 so that you can claim the tax paid during calendar year 2007 on your US 2007 tax return. This assumes you are using the "paid" basis for Foreign Tax Credits.
Another recommendation: Do not invest in Unit Trusts and Investment Trusts, as these are subject to PFIC taxation rules (higher US taxes than investing directly in shares like BT, GE, IBM, etc.). If you wish to know more about PFIC taxation, read about it here:
http://en.wikipedia.org/wiki/Passive_foreign_investment_companyCheers,
Lizzit
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