Udemy Instructors get paid on the 8th of each month. The revenue they receive on the 8th corresponds to sales from 2 months back. So for example, a payment an Instructor receives in March relates to sales from January. This 2 month period between payouts allows for 1 Month of Sales and 1 Month of Refunds. In practice, once an Instructor has been with Udemy for more than 2 months he or she will be receiving a payment every month (as long as he or she had sales of course.)
The “Revenue Report” in Udemy allows Instructors to check the exact payout date (expected payment date).