Scenario 1: Leo is the sole owner of Leo Construction, a proprietorship whose profit was $500,000 for 2017, he had income of $10,000 from interest generated by his personal bank savings

Scenario 2: Leo and four nephews have equal ownership rights in a partnership called Leo and Nephews Construction Company. The company had a profit of $500,000 for 2017, and each of the five partners received $2,000 in interest income.

Scenario 3: Leo and his four nephews decide to incorporate their company as Leo Associates, Inc. In 2017, the corporation earnings before income taxes was $500,000 and all after-tax profit was distributed as dividends to the five shareholders, each one receiving the same amount. Also each of the five stakeholders received $2,000 in interest income.

(1) For the above three scenarios, assuming Leo and his four nephews are all married and filing jointly with no dependent children, and there is no other deductions. For each scenario: (a) How much federal income tax each individual should pay? (b) How much income tax the IRS would receive in total?