Final answer:
GHI, Inc. may deduct $8,000 per month for the amount paid to Tom's son.
Step-by-step explanation:
GHI, Inc. can properly deduct $8,000 per month for the amount paid to Tom's son.
Tom owns 100% of GHI, Inc., so any payments made to his son can be considered as a distribution of profits from the company. However, the payment of $10,000 per month to Tom's son is excessive compared to the payment of $2,000 per month to the other worker performing essentially the same duties. It is important to ensure that payments to related parties are reasonable and in line with market rates. In this case, the appropriate amount to deduct for Tom's son would be $8,000 per month, which is the difference between $10,000 and $2,000.
It is crucial for businesses to adhere to fair and reasonable compensation practices to avoid any potential legal or tax issues.