William Costley LLC

William completely takes the stress out of filing annual tax returns. He is very professional, thorough and gets everything done in a very timely manner. I appreciate his responsiveness and the ease of working with him. I highly recommend him to anyone searching for an ace accountant.

Working with them has been awesome! Small business and personal taxes

I had an excellent experience working with my tax specialist on my 2025 tax return. This is the 3rd year we have used them and they have been wonderful. They were highly knowledgeable, responsive, and thorough throughout the entire process. Complex topics were explained clearly, and I always felt confident that my return was being handled accurately and thoughtfully. Deadlines were met without stress, and communication was proactive and professional. I truly appreciate the attention to detail and strategic guidance, and I would highly recommend their services to anyone looking for a reliable and trusted tax professional.

William and his team are the right people to manage my personal tax needs. I've had some questions and William takes time to listen and offers suggestions and confirmation that I am thinking the right way and doing the right things to reach my goals. I have worked with this team for two years now and I am happy I found them.

William was great. His team was very thorough and communicated effectively. Highly recommend! Biggest refund I have ever had.

William Costly has been doing my taxes for the past three years, and I’ll definitely be a customer for life. I have total peace of mind knowing my taxes are done correctly every time. They also have an app that makes submitting everything and getting your taxes done incredibly easy and convenient.

I do wish the turnaround time was a little faster, but honestly all the positives far outweigh that. Because of the quality of service and the confidence they give me each year, they still get 5 stars from me!

This was my first time to have to file a 1099. William was very informative and helpful and extremely friendly. He made me feel comfortable and not so afraid of what I was going to encounter down the line.
I highly recommend him!

Needed help in filing back taxes for a friend - and William Costley got things sorted quickly and efficiently. This would have taken me months to figure out. 10 out of 10, would definitely use again.

I contacted the office of William Costley LLC after being unable to reach my previous tax preparer for several months—right in the middle of the extension deadline crunch. When I called, Chris was reassuring and promised that the firm would take care of me before the October 15th deadline.

The office staff were very professional and promises were kept. For me, the experience has been a life changing- fresh air. I will continue to use the services and refer others.

I contacted the office of William Costley LLC after being unable to reach my previous tax preparer for several months—right in the middle of the extension deadline crunch. When I called, Chris was reassuring and promised that the firm would take care of me before the October 15th deadline.

The office staff were very professional and promises were kept. For me, the experience has been a life changing- fresh air. I will continue to use the services and refer others.

I was very impressed with the prompt and courteous response to my first inquiry and found it fast, easy and convenient to work with William. I liked the process of having an in person first meeting, and then being able to upload additional documents to their secure tax portal. Very pleasant and efficient service and beautiful office meet space!

William is courteous, caring, and competent. I appreciate the excellent financial services he provides.

I needed help with taxes and back taxes plus a 401k that wasn’t handled correctly by the financial firm. On top of that I sold my house. It was complicated. Mr. Crostly was a wealth of information and straightened all of it out. Everything was handled in a timely and professional manner. I will always have him taking care of my financial matters now.

William Costley LLC has been outstanding in handling both my business and personal accounting needs. Their professionalism, attention to detail, and ability to clearly explain complex matters made the entire process stress-free. I truly appreciate their responsiveness and the peace of mind they provide knowing everything is taken care of properly. Highly recommend them to anyone looking for a knowledgeable and friendly accountant!

Met with William Costley today. He was very informative and easy to talk to regarding a pre tax season review for 2025.

I had a great experience during an online consultation with William Costley. He was patient and attentive. He listened carefully and then fully answered all my questions. He was encouraging without being pushy. I highly recommend!

Started using William and his business for my business and personal tax matters as well as strategy. Very helpful on both fronts and can always count on getting my questions answered.

Everyone in this office is amazing. They take the time to answer questions and explain everything. 10/10

Im very happy with the service I have received over the last several years. I highly recommend William Costley.

Had great trust and they did a great job

I found William following an urgent need for accounting help. The entire year William has been very helpful and informative and helped me to maximize deductions and plan for the future. Communication has been great and prompt and the software used makes it easy to stay on top of things . Happy to recommend William to anyone.

So grateful to be working with William and team. They are quick to respond and collaborate to ensure we're making the right decisions for our businesses and our family