I work for a recognized 501(c)3 organization. We have coaches that are contracted with our organization to teach. As a 501(c)3, what are we obligated to pay them in terms of mileage? Do we have to pay them the standard business rate of $0.545 a mile, the non-profit deductible rate of $0.14 per mile, or nothing at all. The contract does not specify that they will receive any payment for mileage. If we wanted to pay them, what rate should we be reimbursing them at?