Any disallowed losses can be used by the purchaser on a subsequent sale to an unrelated party.
Here is the excerpt from Ninja Notes:
SALES BETWEEN RELATED PARTIES
Ø Ancestors
Ø Brother/Sister
Ø Spouse
Ø Descendants
Ø Corporation or partnership where you're a 50% shareholder
Ø Seller cannot take a loss on a sale, but the gain is always recognized
Ø Related party gets to use the disallowed loss when sold
o Never below zero – i.e. a net loss is not allowed
o Related party's holding period begins when they acquire property
Ø In-Laws are not related parties
And here is the explanation from the MCQ, which doesn't make any mention of the initial loss other than it's a gift. No explanation as to why this is a gift and not a related party loss.
When Gibson's adult child sold stock valued at $14,000 to a parent for $12,000, the child made a $2,000 gift to the parent as well. Where a transfer of property is in part a sale and in part a gift, the basis to the purchaser is the sum of:
the greater of:
the amount paid for the property or
the seller's adjusted basis for the property at the time of the transfer, and
the amount of basis increase allowed for gift tax paid.
In this case, the seller's $16,000 adjusted basis in the property at the time of the transfer was greater than the $12,000 paid for the property, so this is Gibson's basis in the stock. His gain is recognized as follows:
Sale price $18,000
Basis (16,000)
——–
Recognized gain $ 2,000
Note: For determining loss, the basis of the property to the purchaser cannot be greater than the fair market value of the property at the time of the transfer.
Regulation Sections 1.1001-1(e) and 1.1015-4
I even searched the regulation sections listed in the explanation, and it is also lacking an explanation as to why this isn't a related party transaction.