Researcher Referrals

You can find your referral URL at Sharing this URL with your friends/colleagues is a great way to earn free credit to use on Prolific studies!

When a researcher registers on Prolific using your referral URL and tops up their account by at least £200 / $250 for the first time, we will credit both of your accounts. 

You (the referrer) will earn a credit of £40 / $50, and the new researcher will receive a bonus of £80 / $100 in addition to their top-up!

You can use this credit to pay any study fees, including representative sample costs & bonus payments. Note that you can't cashout/refund this bonus from a researcher account.

After signing up with a referral code, the new researcher must top-up within 30 days in order to receive the bonus credit. When this period expires, neither the referrer nor recipient will receive the referral credit.

To earn the referral credit, the top-up must be a value of at least £200 / $250. The first top-up on the account does not have to be of this value, as long as an eligible top-up is made within the 30-day period. 

Please follow our best practice guidelines when promoting the referrals scheme:

  • Don't conceal the fact that you are using a referral link.
  • Don't be spammy in promoting your link.
  • You should not send your link to anyone who has not confirmed to you in advance that they would be happy to receive it.
  • Don't make any false claims, or do anything that might bring Prolific into disrepute.
  • Self-referrals (i.e. signing up yourself to multiple researcher accounts using different email addresses) will not be eligible to receive the bonuses. If we have reason to suspect that this is occurring, we reserve the right to withhold any referral bonuses earned.

Please feel free to be innovative and creative, but in general use common sense. If you are in doubt as to whether something is acceptable, please get in touch with us via


Referral Scheme Terms

  1. The referral bonus must be claimed by topping up within 30 days of signing up. Top-ups after this period will not be eligible for the referral bonus
  2. Only top-ups of £200/$250 are eligible for the referral bonus
  3. The referral bonus is only rewarded on the first eligible top-up after sign-up
  4. Referral bonuses for new researchers can be spent on any study type including representative samples
  5. The referrer will receive their bonus when the researcher that they referred tops-up
  6. There is no limit to the number of people that you can refer and there is not limit on the bonus you can receive for referring new researchers.
  7. Top-ups from credit/debit cards that have been used on another researcher account are not eligible for the referral bonus. The top-up will be successful, but no bonus credit will be added to the account
  8. If a researcher requests a refund on an account with an unspent referral bonus, the bonus will not be included in the refund
  9. Researchers cannot pay study rewards to accounts that they control
  10. The referral bonus can only be used on the researcher's account that it is originally credited to, and cannot be transferred to another researcher's account.
  11. Prolific can change the referral bonus, for referrers and recipients, and eligibility period at any time, without notice
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