Winther & Company is a full service accounting firm located in Simi Valley, California. Most clients of the company reside in communities around Simi Valley such as Thousand Oaks, Los Angeles, Ventura, San Diego, Fresno, Visalia, Moorpark, and Westlake. The business provides investment, tax, and accounting services in addition to assistance and training for QuickBooks. Other services for corporate owners and small business owners include tax planning, financial statement preparation, bookkeeping, payroll, and sales tax issues. Each Certified Public Accountant with the company has more than twenty years of experience offering tax planning services for individuals, corporations, partnerships, trusts, estates, and gift tax returns.