What is a UAE Tax Registration Number (TRN)?
A Tax Registration Number (TRN) is the 15-digit number the UAE Federal Tax Authority gives to a business registered for tax. For VAT it starts with 100. It appears on tax invoices and returns. VAT began in the UAE on 1 January 2018 at a standard rate of 5 percent.
Who needs to keep TRNs on file?
Any business that issues tax invoices needs its own TRN. Any business that claims input VAT needs the supplier TRN printed on each invoice it receives. Finance teams therefore store supplier TRNs next to invoices so that a quarterly return can be checked against the paperwork.
How can you check the shape of a TRN?
A VAT TRN has 15 digits and starts with 100. A strict pattern for that shape is shown below.
^100\d{12}$The pattern checks the layout only. It does not prove that the number is active or that it belongs to the named supplier.
What does an example look like?
The number 100123456789003 is a made-up example that matches the layout. It is not registered to any business.
How does InstantDrive read a TRN from an invoice?
InstantDrive extracts the text of the invoice and runs its deterministic pattern engine first. A match is accepted without calling a language model. Vision AI is used only as a fallback when text recognition confidence is below 90 percent.
What does InstantDrive not do with TRNs?
InstantDrive does not look up a TRN with the Federal Tax Authority, does not file returns and does not give tax advice. It reads the number, stores it with the file and names the file so the invoice can be found at filing time.
Primary source: UAE Federal Tax Authority
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InstantDrive stores your licences, Emirates IDs, tenancy contracts and invoices, reads the numbers and dates, and names every file in one pattern.
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