#000000;background-color:transparent;vertical-align:baseline;">A Tax Identification Number Uk#000000;background-color:transparent;vertical-align:baseline;"> is a unique number that has been issued to any person or company for taxation purposes. NI number is the common TIN for individuals while for business it is Unique Taxpayer Reference (UTR). They also assist HMRC with finding individuals and their tax accounts. Fundamentally, one is needed to file taxes, apply for benefits and to identify oneself for all the issues that has to do with taxation. Evidently, it guarantees that ac counts balances give a correct tax amount revealing and also complies with the existing tax laws.