If an investment is made into an account by someone other than the account owner(s), the contributor who gave the money may be subject to gift taxes for the amount.
The gift tax is a federal tax on transfers and conveyance of property in the form of a gift between living people. However, the Internal Revenue Service (IRS) does allow certain amounts to be excluded from taxes and reporting. This amount can change annually, and it’s based on the contributor’s filing status.
Consult a tax advisor regarding your specific situation.