Sanderson, Perry & Associates, PLLC is a CPA and advisory firm located in Huntsville, Alabama that serves clients in multiple states. The two members of SPA have a combined 60 plus years in serving clients in public accounting. Responsibilities. Business Accounting Services (BAS) personnel are directly responsible for various client accounts that are assigned to them. BAS includes bookkeeping, payroll and payroll tax, sales and use tax, financial...