Section 117 of the Income Tax Ordinance, 2001 is the legal basis for cancelling an NTN — but in practice, deregistration mostly applies to business NTNs (sole proprietorships, AOPs, companies) rather than individual CNIC-based NTNs, since your CNIC continues to exist as a national identifier regardless of tax status.
When You’d Actually Deregister
- Shutting down a sole proprietorship or partnership that will no longer trade
- Winding up a company (in coordination with SECP dissolution)
- Discontinuing a Sales Tax Registration Number (STRN) tied to a business that's stopped operating
- Handling the tax affairs of a deceased individual's estate
The Business Closure Process
- Notify within 15 days: submit a formal notice of discontinuance of business to your Commissioner as soon as the business stops operating — this deadline is strict
- File a final return: a return is still required covering the period up to the date of discontinuance, even if there was no income in that final stretch
- Clear all liabilities: any outstanding tax, penalties, or pending returns must be settled first
- Commissioner's order: once everything checks out, the Commissioner issues an order cancelling the NTN/STRN in IRIS
What Happens If You Just Stop Filing Instead
Simply going silent instead of formally deregistering keeps the filing obligation alive in FBR's eyes — you'll keep accumulating late filing exposure and non-filer status on an NTN that, as far as the system knows, is still an active business. Formal deregistration is what actually stops the clock.
For a Deceased Taxpayer
The legal heirs or representative should visit the local FBR facilitation center with the death certificate and CNIC, so the record can be updated appropriately. This process is largely manual rather than fully online given the sensitivity involved.