Postby Lambs » Sat Oct 12, 2013 11:41 am
G,
While resident in the UK, you are generally liable to worldwide income and gains - including those in the US.
According to standard domestic UK tax law, a 3-month 'stint' in the US will not stop you remaining resident in the UK.
So generally, you will have to account for your foreign earnings to the UK tax authorities - but you should be able to set any foreign (US) tax paid on that income, against any corresponding UK liability - although what you cannot do is end up with an effective refund of US tax through the UK regime: the US credit may get you down to 'nil' but no further.
You are right to mention that the UK/US DTA is relevant. But there are several factors to consider and it is no easy ask for a forum to provide the answers. If you don't mind my asking, what was the nature of the work - was it a private third-party employer, a secondment within a group of companies, or a governmental appointment?
Finally, there is the question of domicile. If you are an Indian citizen, it may well be that you are domiciled without the UK: what we refer to as a "non-dom". In which case, the "remittance basis", which taxes in the UK broadly only that income, etc., which is put at your disposal in the UK, may well apply. If you have remitted all your US income to the UK anyway, the point is moot. (Clearly something where advice beforehand might have served you better). But likewise, if the tax paid in the US exceeds your potential UK liability, then again, effectively moot. (But again, you'd prefer to know before the tax bill lands). It may be helpful if you can give us an idea of the amounts involved. The rules are broadly similar at any level of income. But the tax rates are not.
HMRC will say that you should have notified them of potential chargeability to UK tax over and above your normal UK liability, in the tax year ended 5 April 2013, before 5 October. You are potentially exposed to penalties for that failure to notify - but NOT so long as you are settled up (or otherwise have no UK liability for 2012/13) by 31 January 2014 - the normal filing/payment date. But I think you will probably have at least to file a UK return by no later than 31 January next.
Much to think about, which may be why the stalwarts on the forum have taken time to ponder.
Regards,
Lambs