Jon is 28 and is in graduate school. He has a few years to go to finish his degree program, and when he has finished will have accumulated approximately $200,000 in student loan debt (he already has $100,000 in debt, and anticipates borrowing another $100,000). Jon is a biochemistry major and has already had a few offers from firms that either want to hire him after graduation or provide him with assistance while in school. He has asked his parents for their advice about what to do. Offer #1: One potential employer has proposed to give Jon a $12,000 per year bonus for every year he is employed with the firm, for up to five years. Jon can use the money to pay back his loans, or for whatever else he would like. Offer #2: The second potential employer has offered to contribute extra funds to Jon 401(k) plan for every dollar Jon pays toward his student loans, up to $12,000 per year, for up to five years. This would be over and above the regular company match. Offer #3: A private company has contacted Jon and offered to fund the cost of his remaining education (approximately $100,000 for two more years of school) in exchange for a 10% share of his future earnings, with payments capped at $158,000. Jon explained that this was known as an income share agreement. He is interested in this option, but is concerned that the tuition payments would be considered income to him, and wants to know if his future payments would be deductible.

What are the tax ramifications of the three proposals?