About Us

Sines & Associates was established as a full service CPA firm to serve the tax, accounting and consulting needs of individuals and small businesses in the Frederick area. We strive to strike the perfect balance between small, local, attentive service and professional experience and expertise.

We believe that listening is the foundation of a lasting client relationship built on trust and respect. Our goal is to provide financial leadership, guidance and advice that you can rely on to help you grow your business and become more successful.

Timothy Sines, CPA

Timothy J. Sines, CPA is the principal of Sines & Associates, Certified Public Accountants. The firm, which was founded in November of 1988, provides complete tax services as well as financial statement preparation, financial projections, cash flow management, business valuation services and business development planning. These services are provided to a wide variety of businesses in the Frederick Metropolitan Area.

During his career as a Certified Public Accountant, Mr. Sines has built a reputation as an expert in tax and business consulting for self-employed businesses and owners of closely held corporations. He has been engaged in extensive tax research, tax planning and tax law compliance for over 28 years. Mr. Sines is skilled in dealing with Federal, State and local tax authorities.

Tim received his Bachelors of Science Degree from the University of Maryland. He is a member of the Maryland Society of Accountants. Originally from Annapolis, MD, Tim has resided in Frederick since 1988. He is married, and enjoys spending time with his 4 children.

Aside from his professional responsibilities, Mr. Sines extends pro bono assistance to numerous organizations and individuals in need of assistance.


  • Maryland Society of Accountants (MSA)