Stephanie Thomas, CPA, is principal of Thomas, Thomas & Thomas, P.C. in Houston. Her career focus has been exclusively on state and local tax (SALT) issues, working with state tax authorities on audit issues, securing sales tax credits, and consulting with clients on tax planning. She worked in the SALT departments of several Fortune 500 oil and gas exploration companies before joining the family business. Stephanie and her sister, Mary, started The Sales Tax Sisters, a practice solely devoted to educating accountants, bookkeepers, small business owners (DIYers), and novices on basic information about sales and use tax. Find Stephanie on Twitter @TaxSisters.