It’s not compulsory to tell us your TFN. However, if you don’t, you might be liable for extra tax to be taken out of your super contributions and we can’t accept any non-employer contributions, such as if you or your spouse want to add money to your super account.

Also, if you don’t add your TFN to your super account and you change jobs, you might lose track of your super, making it difficult to find again.