About Us

About Winther & Company

We have a large client base from Southern and Central California and many of our clients that have moved out of California continue to use our services. Most of our valued customers reside in
Simi Valley, Thousand Oaks, Westlake, Moorpark, Visalia, Fresno, San Diego, Ventura, and
Los Angeles. At Winther & Company we provide tax, investment, and accounting services for all 50 states. You can schedule a phone appointment with one of our CPAs for tax preparation, IRS Tax Controversy Representation, or Forensic Accounting.

Our qualified accountants provide training and assistance for the Quick Books accounting program.  Our services advise small business owners and corporate owners in accounting, tax planning, financial statements and day-to-day operational questions such as, tax preparation, bookkeeping, payroll tax, and sales tax issues right here in Simi Valley.

Anyone can type numbers into a computer tax program and produce a tax return.  We offer the answers to your questions that only experienced C.P.A.’s can provide to maximize the deductions you are allowed, by law,  and to advise you on what not to do, to reduce your risk of audit.

To schedule your Tax Return appointment, or to speak to an Investment Advisor, please call
805-583-2720, and our friendly staff will personally schedule your tax appointment. Don’t delay, as our Accountants book up fast!


The Winther & Company Staff

CPA in Simi Valley, Thousand Oaks, Westlake, Moorpark