Is the online 90-day TM47 form easy to complete and what date should I use for the visa expiry?

To complete the online 90-day TM47 form, you only need to fill out the required 'starred' fields. You should enter the expiration date as the date your current stay visa is stamped until, typically the 6-month stamp expiry you received upon entry. After submission, you will receive an email acknowledgment and a notification once your report is accepted.