If you are a contractor and do not meet the "self employment" rules as defined by the Inland Revenue then IR35 is a very important consideration. IR35 took effect in April 2000 and means that the Inland Revenue can tax some contractors as though they were direct employees of their clients.

Depending on what type of tax problem you are facing, there may be more than one tax relief option available to you. You may be looking to file tax returns for one or more years and then be set up on an installment agreement. You may owe taxes for several years, do not have the means to pay the tax debt in full, and would like to propose a settlement or participate in a tax amnesty program.

At one time or another it will happen to just about everyone. You will get your W-2's from your employer, and sure enough you made some money!

This article talks about the importance of understanding the concept of filing expat taxes. It clearly states why one should go for tax preparation service when it comes to expat taxes filing.