While financial incentives are allowed, they must abide by all gambling and raffle laws in the state of Michigan. So internet surveys that want to use incentives must do so as a game promotion or sweepstakes and must be geofenced to the state of Michigan. You can find more information about raffles and gambling here:
https://controller.msu.edu/tax-services/raffles
https://controller.msu.edu/manual-of-business-procedures/section-49
https://controller.msu.edu/manual-of-business-procedures/section-44
Removing the element of consideration can change a raffle to a sweepstakes. To do this there must be an alternative method of entry that does not require any type of participation or survey completion. This can often be achieved by allowing participants to mail in their name for entry without completing the survey. For sweepstakes potential participants much be advised of the date prizes will be awarded, what the prizes are, how the winners will be selected and the approximate odds of winning a prize (which can be a generic statement that odds are based on the total number of entries).
To avoid these requirements, the element of “chance” can be removed by making the survey “skill based.” This could be as simple as “the first 15 to respond.”
If considering using incentives, please confirm with OGC that it meets all gambling and raffle laws.