The first two months of a subscription get 10% off and later months get 20% off. The discount comes out of what the buyer pays, not out of your share: a 100 Robux pass costs a Plus buyer 90 or 80, and you receive 70 either way. See the Robux tax calculator for the 70% rule.
FAQ
How much is the Roblox Plus discount?
Plus subscribers get 10% off eligible purchases for their first two months and 20% off from the third month.
Does the discount lower what I earn?
No. Roblox covers the discount, so a 100 Robux pass pays you 70 whether the buyer paid 100, 90 or 80.
How is a discounted price rounded?
Roblox does not publish its rounding for buyer prices, so this calculator rounds to the nearest Robux. Your own earnings are unaffected.