Mrs. Nickle is a California licensed CPA with a forensic accounting and tax practice in Rancho Cucamonga, California. Leighanne has over 20 years working in both public accounting and private industry. Mrs. Nickle owns and operates a California CPA firm, where the focus of her practice is representing taxpayers before the Internal Revenue Service, California Franchise Tax Board, the California Department of Tax and Fee (CDTFA), the California Employment Development Department (EDD), and California Child Support offices in Orange County, CA. In addition, she has served as an expert witness for civil and criminal court proceedings regarding forensic accounting, tax, payroll issues, and child support payments.

Leighanne currently serves as the Vice-President for the Inland Empire Chapter of the California Society of Tax Consultants, where she oversees continuing education and work as the liaison between the chapter and the IRS Stakeholders Liaison.

Mrs. Nickle also serves on the Committee on Tax (COT) with CalCPA (California CPA). As a member of the COT, she works directly with the California Franchise Tax Board (FTB) on tax matters and acts as a liaison between the local and state chapter and the California Franchise Tax Board.