Here at Polston, we accommodate our vast tax expertise to any situation our clients might face. Today's blog post is for any of our clients that don't have a Social Security Number, and instead have an ITIN. ITIN stands for Individual Taxpayer Identification Number, and is used by the IRS to identify taxpayers who are obligated to pay taxes but do not have, and cannot legally obtain, a SSN. If you're an ITIN holder and you need to file a tax return in 2017, you may need to renew your ITIN.