What's my job title if I do payroll, pay bills and credit cards, etc?

I do payroll, I watch and balance several bank accounts, I do billing and statements, I pay bills, I pay and monitor the credit cards, I do the paperwork for the trailers we sell as well as register them. What kind of title would that even leave me with? Basically, I do all the paperwork; I don't have a department.

Wage Clerk