Shannon signs a $100,000 contract to develop a plan for integrating the computer operations of State University in December. Under the contract, she receives a $30,000 advance against future payments on the contract upon signing the contract. The contract stipulates that if Shannon does not produce an acceptable plan, she must repay any portion of the advance not earned to date. Does Shannon have any income from the receipt of the advance? Explain in terms of the income tax concepts presented in the chapter.