/tæks ˈnʌmbər/ – Phrase
Definition: Số thuế
A more thorough explanation: an identification number issued by a tax authority. Different authorities have different terms for this, for example the US Internal Revenue Service (IRS) issues US taxpayers with a Taxpayer Identification Number (TIN)
Example: If everything goes according to plan you will be instructed to go to the local tax office to obtain a tax number.