Ethics and budgeting · 3 min read
How much to pay research participants
Fair pay isn't only an ethical question. Participants who feel fairly treated pay more attention, drop out less and come back for your next study. Setting pay well comes down to three things: an honest time estimate, a fair hourly rate, and clear rules for everything that isn't a normal completion.
Updated November 02, 2026
Estimate time honestly
Pay is set per completion, but it should be fair per hour. Pilot your study with a few people, or run it yourself at a normal pace including the consent form, and use the median time rather than the fastest. If your estimate turns out to be too low once real data comes in, raise the reward or pay a bonus.
Choose a fair hourly rate
There's no single official rate for research participation, but there are useful reference points. Many institutions and ethics boards look for pay that compensates time without being so high it pressures people to take part. Platforms also set floors. As published in November 2026, Prolific's minimum is $8.00 an hour with $12.00 recommended, CloudResearch Connect's is $7.50 with $10.00 recommended, and every Populiva study pays at least $10.00 an hour, or $15.00 for work that trains or evaluates AI.
Pay screen-outs for their time
If you end the study early for people who don't qualify, pay them for the minutes they spent, and don't count it against them. It's fair, and it keeps people answering screening questions honestly.
Use bonuses carefully
Bonuses can reward effort or performance, but say in advance what earns one and how much. Never use a bonus to make up for a base rate that was too low by design.
Reject rarely, and with a reason
A rejection means someone isn't paid for time they spent. Reserve it for clear cases, such as not completing the study or failing a fair attention check, give the reason, and let people appeal. Review promptly: participants are waiting for that money.
Budget the whole study
Your cost is participant pay plus the platform fee. For example, 300 participants in a 10-minute study at $12 an hour is a $2.00 reward each, or $600 in pay; with a 15% academic fee that's $90 more, $690 in total. Add a margin for screen-outs and any bonuses.
See exactly what a study costs, including the platform fee, before you launch.