Currently, there is no option to get a sales report by state. If you use Order Entry they is a report in the Customer Report Library that sorts by state, but does not give you totals. But that does not help if you only use AR.
Customer need a sales report by state to report state income.
See KB #66139 Is there a sales report by State?
I just tested it under OE sales order report. For all customers or just uncheck box to choose a single customer. sort by: customer ID, choose date, status: closed. Then go to filters, data field: customer state, condition: equal to, Value: put whatever state you are looking for. It will show you all customers for that state & their totals. I hope this help some.