Marriott’s new program allows members to transfer up to 100,000 points per calendar year to any other member. If you have Gold status or higher, you can transfer points for free, otherwise it will cost you $10. You have to call Marriott Rewards to make the transfer (801-468-4000). Ironically, the automated phone system still mentions the old 50K per year limit, but I’ve verified that you can do up to 100K today.
What’s the rush?
If you want to transfer more than 100,000 points to another member, the best way to do that is to transfer up to 100K today, and then transfer the rest anytime in 2019.