Mr. Tolen made the following interest payments. Determine the extent to which he can deduct each payment on his Form 1040.

a. $4,600 on credit card debt.

b. $14,100 on a $210,000 mortgage secured by his vacation home in Key West. Mr. Tolen incurred the mortgage to purchase this second home.

c. $1,300 on a $22,000 unsecured loan from a credit union. Mr. Tolen used the loan proceeds to add a boat dock to his Key West home.

d. $3,700 on a $100,000 unsecured loan from his mother-in-law. Mr. Tolen used the loan proceeds as working capital for his business as an independent insurance agent.

e. $2,400 on a $50,000 loan from a bank. Mr. Tolen used the loan proceeds to purchase an interest in Farlee Limited Partnership, which is his only investment asset. This year, Mr. Tolen was allocated a $790 ordinary loss from the partnership.

f. $800 in a $35,000 loan from a car dealership that financed the purchase of Mr. Tolen’s new family automobile.

Assume the taxable year is 2018.