“Net earnings” means the gross earnings received for services rendered by a minor during the term of a contract, less:
1. All sums required by law to be paid as taxes to any federal, state or local government with respect to or by reason of such earnings;
2. Reasonable sums to be expended for the support, care, education, training and professional management of the minor; and
3. Reasonable fees and expenses to be paid in connection with the contract and its performance.