Enabling paid subscriptions allows your fans to support you on a recurring monthly basis. Here's how it works:
Paid subscriptions are currently only available for verified creators. If you're not already verified, please apply for verification. We'll be opening paid subscriptions to non-verified creators soon.
When you're verified, you can enable paid subscriptions on your channel from the “Monetization settings” page.
Once this is enabled, a "Subscribe" button will appear on your channel and video pages.
You'll keep 90% of your earnings, after transaction fees.