How many digits is a Bangladesh e-TIN?

The current National Board of Revenue electronic TIN (e-TIN) is exactly 12 digits, all numeric. Older paper TINs were 9 or 10 digits and have been replaced by the 12-digit format.

Does the e-TIN have a check digit?

There is no publicly documented weighted check digit on the e-TIN, so this tool validates structure — length, numeric content, and the absence of placeholder patterns — rather than a checksum.

I have an old 10-digit TIN. Is it still valid?

The NBR migrated taxpayers to the 12-digit e-TIN. A 9 or 10-digit number is flagged as legacy; you should re-register online to obtain your current e-TIN.

Why is my all-zero number rejected?

An e-TIN of all zeros or a single repeated digit is a placeholder, not a real taxpayer identifier, so the tool rejects it even though it is 12 digits long.

Is my e-TIN sent to a server?

No. All checks run in your browser using JavaScript. Your number is never transmitted, which makes the tool safe for KYC and procurement use.

Bangladesh e-TIN Validator

The Bangladesh e-TIN Validator checks whether a Taxpayer Identification Number issued by the National Board of Revenue (NBR) is structurally valid. It confirms the 12-digit electronic format, rejects placeholder values, and flags older 9 and 10-digit TINs that have been superseded — all locally in your browser.

How it works

Bangladesh moved from paper-based 9 and 10-digit TINs to a 12-digit electronic TIN (e-TIN) issued through the NBR online registration system. The e-TIN is the identifier required on income-tax returns, large bank transactions, government procurement, and many licence applications.

This tool strips spaces and dashes, then applies three rules. First, the number must be exactly 12 digits and entirely numeric. Second, it must not be a placeholder — an all-zero value, or the same digit repeated twelve times, is rejected. Third, a 9 or 10-digit value is recognised as a legacy TIN and flagged so you know to re-register. There is no public weighted check digit on the e-TIN, so the validation is structural rather than a checksum.

Example

A value such as 123456789012 passes as a valid e-TIN structure and is shown grouped in blocks of four for readability. A value like 000000000000 is rejected as a placeholder, and a 10-digit value such as 1234567890 is flagged as a legacy TIN.

Notes

A valid structure confirms the number could be a real e-TIN, but only the NBR can confirm the taxpayer record is active. Use the NBR taxpayer verification service for live status before relying on the number for KYC or filing. Nothing you type leaves your browser.