This URL is the cancellation page — you do not have to hunt through settings
Go to the Microsoft 365 cancellation page
https://account.microsoft.com/services/microsoft365
Cancelling does not cut you off immediately. You keep access until the end of the period you already paid for, so if you have decided not to renew you can cancel straight away without losing anything.
Sign in with the Microsoft account you originally bought it with — any other account simply will not show the subscription.
If the screen offers “Turn on recurring billing” rather than “Cancel”, recurring billing is already off and you will not be charged again. There is nothing more to do.
Not every cancellation is refundable; whether you qualify is only shown after you cancel.
Prices verified , with the official page as the final word. Plans and availability vary by region; these are the official Taiwan prices.
People who forget to cancel are not careless — the moment you decide and the moment you are charged are a whole month apart. Add LapseWatch on LINE and send “Microsoft 365 12/25” to record it. No install, no signup.
Want to see the whole picture? Add up a year of subscriptions (in Traditional Chinese); if you work at a computer there is also a Chrome extension that keeps everything on your own machine.
Interfaces change. Always treat the official page as the final word.