The primary requirements to apply for an eTA are that you must have a valid passport from a visa-exempt country, an active email address, and a valid credit card. Here are the five simple steps you can follow to apply for an eTA:
Step 1: Keep your credit card or debit card and passport ready. Also, review the given help document.
Step 2: Fill out the online application form.
Step 3: Complete the eTA fee payment by paying $7 after filling out the form.
Step 4: Receive an official email about the eTA.