In QuickBooks Online (QBO), employees may be exempt from FUTA, Social Security, and Medicare taxes under specific circumstances, typically for certain categories such as:
Religious organizations and employees.
Specific small businesses.
Certain employment types like student or government roles.
However, exemptions vary based on organization, employment status, and tax laws. I suggest consulting a tax professional or IRS guidelines for the eligibility criteria on FUTA, Social Security, and Medicare tax exemptions.
Additionally, I've added these articles to learn more about tax wages: