One of the scariest situations a person or a company seems to face is an IRS tax audit. This is usually because the average individual does not know enough about the tax law. This is the reason why many businesses and individuals seek the help of a qualified full-service accounting and business consulting firm. At GYL Decauwer LLP, we offer tax audit assistance to businesses and individuals in Rancho Cucamonga, and in the surrounding areas.

At GYL Decauwer LLP, you can count on our top professionals to provide you with notable results. Going beyond the books and numbers, we guarantee our service. However, if we do not produce the results you were hoping to achieve, GYL Decauwer LLP offers you a money-back guarantee. We feel confident we will be able to assist you with the service you need.


We will keep businesses informed on various areas of their company. Our three levels of financial statements that we prepare include audits, reviews, and compilations.

The audit process involves an evaluation of a company’s internal controls, testing of accounting records, and observation, inquiry, and inspection of the overall business. In order to prepare you for your company’s income tax audit, we will provide insight on whether the financial statements presented conform to generally accepted accounting principles (GAAP).

The professionals at GYL Decauwer LLP are experts in preparing audited financial statements, including governmental and non-profit audits. It is important to understand that reviews are different than an audit; a review of procedures is performed to provide limited assurance that we are not aware of any material adjustments that should be made with respect to your financial statements. A compilation is accumulated information provided by the client from which we prepare statements, such as audits.


In addition to tax auditing and financial statements, we offer our clients tax and consulting services. We can also provide your staff with onsite training. Our professionals have the ability to sharpen your employee’s skills in accounting software, internal and reporting controls, customer service, and more. As a full-service accounting and business consulting firm, we will do everything we can to meet your financial needs. We pledge to provide you with financial information in a timely and accurate manner.

As members of CPAmerica, a national and international organization, we have the resources of a national firm. This allows us to be independent and maintain a rate structure that is competitive with local firms.

To schedule a free consultation with one of our Ontario tax planning professionals, please call (909) 948-9990 or toll free at (800) 644-0696. A contact form is also available to contact a member of our team.