Okay, let’s calculate this. As a CPA, Robert has a solid foundation in accounting and auditing. His skills in tax preparation and financial statement analysis are also valuable. Considering his certification and location in Tulsa, OK, I’m estimating his hourly rate to be around $75. This is a relatively standard rate for a CPA in the US, especially for those with mid-level experience. Some sources suggest that CPAs in larger cities or with more experience can charge upwards of $150-$200 per hour. However, for a smaller city like Tulsa, $75 seems like a reasonable estimate.