Final answer:
Tom's interest income from the bond for the year is $500.
Step-by-step explanation:
Tom's interest income from the bond for the year is $500. As a cash basis taxpayer, Tom recognizes interest income when it is received. Since Tom collected $500 interest from the bond in December, that is the amount he will report as interest income for the year.
The $100 accrued interest that he paid when purchasing the bond is not included as income until it is received. Therefore, his interest income from the bond for the year is $500.