Assuming that a shareholder owns 100% of an S-Corp and the same shareholder also owns 30% of C-Corp (completely different companies and industries). Both companies have posted a loss for 2013. To help the C-corp to meet payroll, the shareholder borrowed 9,500.00 from the S-corp and loaned to the C-Corp in January of 2013. The loan was repaid in Februay of 2014 (which the shareholder then used to pay back the S-Corp). The question is:

1) Knowing that the loan is less than $ 10,000.00, should the S-Corp charge interest from the shareholder?

2) Should the shareholder then charge interest from the C-Corp?