Google One members can now get YouTube and YouTube Music ad-free. Activate by 31/7/23, $14.99/month once trial ends. Limited eligibility and restrictions apply.
It gave me one month because I already had trialled YouTube Premium, so their terms may be incorrect.
This YouTube Premium 3-month free trial promotion is only open to participants in Australia who have activated a Google One account by 30/6/23. Offer not available to customers who currently have, or have previously had, a subscription or free trial of YouTube Premium (previously YouTube Red), YouTube Music Premium or Google Play Music. Offer must be redeemed by 31/7/23. Valid form of payment required at sign-up, but you will not be charged until the trial period expires. At the end of the trial period, you will be automatically charged the standard subscription price, currently $14.99. You can cancel your trial at no charge at any time before the trial is over. Offer requires a Google account. Full terms here. Promoter: © 2020 Google Asia Pacific Pte. Ltd., 70 Pasir Panjang Road, #03-71, Mapletree Business City, Singapore 117371
If you want more than the 3 month free you are better off, subscribing to it via another country. Much cheaper after the 3 month expire.
Many posts on here on how this works: https://www.ozbargain.com.au/node/575086