It is common NY big house publishing that on a mass original, the author receives 6% to 150,000 copies sold and 8% thereafter. It is just now becoming common NY big house publishing that on a mass market original, the author receives 8% to 100,000 copies sold, and 10% thereafter.

Bestselling authors receive a larger royalty.

Small press authors may or may not receive more. E-pubbed authors will often get up to 40% or 60% of the cover price -- less overhead = more profit.