The term 'TIN' means taxpayer identification number*. A TIN is a unique combination of letters or numbers assigned by a jurisdiction to an individual or an entity to identify the individual or entity for the purposes of administering the tax laws of such jurisdiction.
In some jurisdictions TINs are not issued. In such cases, instead of the TIN, a functional equivalent can be used, such as a high-integrity number with an equivalent level of identification. Examples of that type of number include, for entities, a business/company registration code/number.
Please note:
- In the US for individuals, their TIN would be referred to as their Social Security Number
- For a US entity* (US person*), it’s TIN is referred to as their Employer Identification Number.
- In the UK for individuals their TIN would either be tax number, OR their National Insurance Number is also used as a TIN.
