@shzh6688 wrote:
Will this guy or his parents have to pay tax if his parents help him to pay $1million for his mortgage?
No.
The recipient of the gift (the "guy", aka the donee) would not pay tax as a result of receiving the gift.
The giver (the parents, aka the donors) would not pay tax as a result of giving the gift unless the value of the gift exceeded their lifetime exemption.
The giver (aka