Some companies use gift cards, discounts, or physical goods like swag bags. Ultimately, you will need to decide what incentive type and amount is right based on your study length, type, budget, and engagement.
Generally, we recommend $40 an hour for remote unmoderated tests. For remote moderated interviews a good rule is $80 per hour for consumers, $100 per hour for professionals. The harder it is to find a user, the more you will want to offer as an incentive. You’ll also want to offer more for high earners and in person sessions as they are more inconvenient. Keep in mind that even for a shorter session, a $20 minimum is ideal to make it worth most participant’s time.