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GYL Decauwer Accounting & Bookkeeping

GYL Decauwer LLP is one of the Inland Empire's largest public accounting firms. GYL Decauwer LLP provides a full range of accounting, audit, business advisory and tax services for businesses, not-for-profits and individuals. Additionally we work in non-traditional areas such as financial planning, employment search and all types of business problem solving. We provide customized solutions to our clients unique to them and no one else. Our reputation is renowned in the business and banking community. The professional services you received are only as good as the team that delivers them. Our team members respond to the challenges you face and anticipate the opportunities of tomorrow. What sets our partners apart is they are business people first and accountants thereafter. We speak the language of business not accounting jargon unfamiliar to you. At GYL Decauwer LLP, we emphasize industry specialization across a range of accounting and advisory services. Our professionals know the env

Phone: (909) 948-9990

Closed now

  • Fri 8:00 AM - 2:00 PM

4120 Concours Dr, Ste 100 Ontario, CA 91764 ·2148.59 mi

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Reviews

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2.5 7 reviews
5 star
2 4 star
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1 1 star
4
Daniel S. 12/10/12

As a client with 12 years or more with Steven Williams and GYL Decauwer LLP, I can confidently endorse what has been a positive and professionally experience for our firm. Steven has consistently...

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Sapna L. 09/22/25

Do not recommend. The customer service and tax planning services are poor. Invoices are incorrect and they feel justified billing greater than 50-75% more than the market value of CPA services. We...

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Colleen P. 05/01/23

The CPA I was previously using joined this firm. From the start I had difficulty getting responses to my emails, and they were extremely slow in completing my taxes, which includes a trust. I...

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Aileen A. 04/03/24

If you are looking for payroll services, keep looking. The staff is friendly, but not able to provide basic insights on invoicing and billing. After repeatedly asking for clarification on...

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Taxweb 2. 06/20/22

This company is idiot. They lack the very basic skill in dealing with pple & technology. Lack real estate ,& tend to screw up over & over . very ruse pple. Don't trust what the operation & finance...

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