Anyone can 'gift' you $16,000 a year without that gift incurring any federal tax consequences. Beyond that, anyone can gift you an additional $12MM+ lifetime without federal tax consequences. All state tax levels are different. If someone gifts you more than the $16K limit in a single year it only discounts your federal limit by that amount. Within these limits there are no federal tax consequences.
Rule #1, Don't lose money. Rule #2, read rule #1. - WB.