The exchange rate from UK£ to US$ for 2010 is 0.64. This is the treasury exchange rate, and IRS recommends its use, although there is no official exchange rate.
The unofficial IRS exchange rate can be found on the IRS section on the London Embassy website and is 1.54.
If you understand the difference between the rates of 1.54 and 0.64 in this thread, then this post isn’t for you (the vast majority of readers). But I fear there may be a passerby or two who haven’t quite got their heads around this, and may be reluctant to ask given two professionals came up with two different numbers (they aren’t in my opinion). Simply, one figure is £’s to the $, and the other is $’s to the £. One is an unofficial yearly average. One is a figure given at 31 December 2010.
In the case of 1 Pound to the Dollar, £1.00 = $1.54. (IRS unofficial rate)
A figure of £10,000 = $15,400 (10,000
multiplied by 1.54)
In the case of 1 Dollar to the Pound, $1.00 = £0.64. (Treasury rate at 31 Dec. 2010)
A figure of £10,000 = $15,625 (10,000
divided by 0.64)
Are both $15,400 and $15,625 correct answers? Could the Treasury use 1 Dollar to the Pound, and the IRS use 1 Pound to the Dollar or 1 Dollar to the Pound? Are the professionals (and others) allowed to use OANDA with different figures in some circumstances? Since there is no official rate, could another rate (more to your advantage) be valid if it can be substantiated? Could you, at times, be required to use a different rate? Why is the answer to all of these questions YES? Who ever said the Treasury/IRS doesn’t have a love of riddles and a sense of humour.
For basic returns using Form 1040 (with Form 2555 and Schedule B), it would be best to keep it simple. Use £1 = $
1.54 (from the IRS London Embassy site) for Form 1040, etc. The FBAR instructions say to use the Treasury site ($1.00 = £0
.64), the 31 December 2010 figure, when determining FBAR amounts.
As for Form 8938, when it eventually comes into existence, it’s anyone’s guess.
Disclaimer: The above is my interpretation only. Others with more knowledge may rightly disagree. I’m not a tax professional. I don’t have a site on the inter-webby. I don’t want to do a tax return for anyone else: for pay, for free, or for the hell of it. So, take my comments with that in mind.