If an officer of a company loans the company money, how should the rate of interest on this loan be calculated? At what rate?

The interest should be no more than current market rates.

If the company can go get a bank loan at 5%, then they should not be borrowing this money from the officer at more than 5%

But it is all very subjective and will vary based on the type of company, the type of people involved, etc.

The interst rate would be based upon the agreement of the involved parties.

Good answer bhet