2 days, min., easy peezy.
I agree, at least 2 days. By the time he pulls all of the taxes figures off the regular monthly utility bills, cable TV/internet, phone bills, etc.
Most months there are 20 work days. Two days of taxes would be roughly 10%. The 9.25 days would be around 46% effective tax rate.
Not knowing where the writer lives its hard to be accurate, but I’d say its between 9.25 and 11 days.