William Costley LLC

William and his team were very responsive and easy to work with. Thanks for the help!

Very professional! We recommend his services and the staff nice too on phone.

I highly recommend Will Costley and his team. I came to Will’s firm after working with a previous accountant and had several issues that needed to be corrected and sorted out. From the beginning, Will and his team were extremely knowledgeable, responsive, and professional. It is a great feeling to have an accounting team I can trust and rely on. I would highly recommend Will and his team to anyone looking for knowledgeable, dependable, and professional accounting services.

We have had a great experience working with William Costley and his team for both our tax preparation and payroll needs. William has prepared our taxes for the past two years, helped us amend prior-year tax returns, and also handles our payroll.

His team is knowledgeable, professional, responsive, and thorough. Whether we are dealing with annual tax preparation, amended tax returns, payroll, or questions that come up throughout the year, William and his team are always helpful and make the process much easier.

If you are looking for a reliable tax preparer, payroll provider, or tax professional in Woodstock, GA, I highly recommend William Costley. He is a great resource for businesses and individuals needing tax preparation, amended returns, payroll services, and dependable tax guidance in Woodstock and the North Georgia area.

We truly appreciate...

Knowlegable and helpful with small business matters

William and his staff were thorough, professional, and helpful with my questions and concerns about future tax planning. I highly recommend him.

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We came to Will with years of unfiled taxes as a result of family illness, death and the relocation of our business. It has been a long journey trying to get everything caught up. Will and his team have walked us through the process, and they are continuing to help us finalize everything. They have helped alleviate sooo much of the stress and anxiety that has come along with trying to get everything done at once. I had prayed God would send us to the right people and I feel like He did. It has been a long journey, but we are finally starting to see the light at the end of the tunnel. In the last week have come to remember why we started our small business and what we once loved about having it. Thank you, Will, Chris, Gavin, and Jeo. We appreciate ya'll more than you know.

Had an initial consultation with William and came away feeling very confident. He took the time to answer our questions and explain everything clearly. Sounds like we’ll be in very good hands. Thank you for your time!

After interviewing a few CPA’s it was a refreshing thing to finally sit in front of William - his character immediately stood out to me as the kind of CPA I could trust to not only learn and understand the intricate needs of my personal and business needs. Truly been an honor to work with him and look forward to the years ahead. Took me too long to find him, but know that I have I’ll be sending all my friends and family his way! Incredible service. Up to date online tools that are simple and make the process pain free and simple as possible. I could go on and on. Please book a time to meet with him. You and your financial future self will thank you!

Great service, very efficient.

This was our first experience with William Costley for our tax preparation. From our first experience over the phone to making an appointment, or interaction with the other employees, and finally meeting William was definitely a great experience. William is truly a professional. We never had any issues during the process. Taxes were completed in a timely manner.

William is great to work with. Very detailed and a good communicator. He does a fantastic job on our taxes every year.

The individual that did my tax preparation for the last six years retired. I needed to find someone new and was so glad I found William Costley LLC in the Towne Lake area. Test. They were thorough and worked quickly. I highly recommend that you use them

WIlliam was very efficient and quick doing my tax returns. The online platform is easy to use, and it hardly took any time at all to upload my documents. The staff is friendly and helpful.

I am very happy with the service that I received with the William Costley, LLC staff in processing my 2025 Fed and GA tax returns. My Fed tax refund was deposited into my account within 7 days - much sooner that I expected. The staff always answered my phone calls and questions promptly and respectfully. Thank you to all.

William Costley is amazing and explains everything in great detail. Definitely recommend doing your taxes with him.

William and his team is the best! Super responsive, knowledgeable, and helpful! We trust him with our taxes and would highly recommend!

William & his team were extremely professional and helpful. A great choice!

William and his team have been a great resource to me as a small business owner. They have a great portal to communicate through and were always there when I called or needed to schedule meetings.

William and team are very responsive and customer focused. This was my first time using them to file my income taxes. Very efficient with electronic filing and made the experience stress free. Definitely using them again next year ! Bill Thompson

Very knowledgeable and friendly during the entire process . Great App lets you put all tax info in one place. I would recommend them for your tax prep needs.