Computershare have sent me a "Form NR301 - Declaration of eligibility for benefits under a tax treaty for a non-resident taxpayer", in relation to obtaining a reduced rate of foreign withholding tax on "Interest, Dividends, and/or Royalties", or "Trust Income", received from a Canadian shareholding I have.
The form asks for a "Non-Canadian Tax Identification Number" (TAX ID #).
Should I disclose my Australian Tax File Number (TFN) here?