Need advice cancel TFN

[#1]

Hi,
Can somebody give me advice on how do i cancel my TFN ?
I had TFN from aug 2019 and i didn't working at all, stay at home wife and pregnant.
What should i do?
Thank you in advance

[#2 · Accepted solution]

@Nathe_2020 

You generally don't 'cancel' a TFN.

This TFN will stay with you for life.