Crystall is the Virginia Taxpayer Advocate at the Internal Revenue Service where she leads the Taxpayer Advocate Business Operating Unit in Richmond, VA. Crystall has over ten years of experience providing tax advisory services to multinational companies and has assisted clients in securing more than $50 million in tax incentives. Throughout her career, Crystall has successfully led tax projects in over 35 states and 8 countries. Prior to joining the Internal Revenue Service, Crystall was a Senior Manager in the Indirect Tax Practice at Ernst & Young where she focused her practice on negotiated tax credits and incentives. While at Ernst & Young, Crystall served a three-year term on Ernst & Young's Americas Tax Innovation Council where she was one of 34 tax professionals selected across the firm's 75,000 plus U.S. employees to identify innovative tax solutions.