Testimonials & Reviews

Susan Cook - WHAT A GOD SEND!!!! As a previous client of Mr Micheal Moore, I was so sad to hear of his passing. Gregg is a force to be reckoned with! He is above convenient and efficient. He knows every loophole in order to assure that you get the best results possible. My Mom passed away in December 2025 and it was a mad dash to get all her financials together by April 15th. I was cutting it close, but he was there and had them returned immediately! I can’t say enough about his knowledge and expertise when it comes to an area very few of us like to venture. And at the very low cost he charges…he will definitely be on my speed dial next year!

 

Brian Wood - I used to do my own taxes using Turbo. This past year, I felt I had made a mistake but couldn’t figure out how to identify it. That’s when I searched and found Greg. He had good reviews, so we gave him the opportunity this past tax year, and we plan to stick with him. His customer service is top drawer, and his thoroughness and explanation of our tax returns is detailed. Would highly recommend him for those looking for a tax professional.

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Diane Peasley - Gregg was GREAT!! He was very professional, but at the same time very personable. He is knowledgeable, which makes me feel confident in him. I would highly recommend him.

M B (DarkenWrath) - Greg is the best. He cranked out my taxes in a day and even went back through everything to find additional options that increased my refund. He’s personable, professional, and clearly cares about helping his clients. Highly recommend — use him, he deserves it.

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Tyler Alan - Amazing local option for getting your taxes filed locally

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Amy Bryant - Thorough, fast, accurate and detail oriented. I appreciated that Gregg met me for about an hour to discuss tax strategies and get to know me and about our family. There was so much “personal touch” which is a welcome change from prior tax preparers. Will definitely continue using Gregg in the future!

 

Bud Harte - Gregg was fantastic! Kept me informed of the progress the entire time. I had moved in 2025 to Kansas from California so had income and taxes with both states. Additionally had to deal with capital gains tax from the sell of my California home. Needless to say I was not looking forward to the tax season! Gregg ensured a quick and (mostly) painless experience. I highly recommend Gregg for you tax needs and have found my “tax guy” for years to come

 

Karra McGreevy - Gregg was great to work with and provided great guidance on how I should handle my tax return as well as my daughters. Looking forward to utilizing his services for as long as he will let me!!

Rosie Ayala - We recently moved back to the area from out of state, so I was in need of a new tax person. I was uneasy and skeptical about hiring just anyone though. I had read some positive posts online concerning Gregg doing peoples taxes. I decided to give him a call, and I am so glad I did. He was very nice, understanding, knowledgeable, efficient and professional. He made me feel confident that I had made the right decision in choosing him. He did an excellent job on our taxes this year and I will be giving him a call again next year! Thank you Gregg!

Janet Clarke - ⭐⭐⭐⭐⭐

Shannon Harris - Greg is a great tax guy, we got everything started via phone/email and then he drove a long way to my house to hand deliver everything. And he did it much cheaper than other professionals charge. If you need a tax pro, you're gunna want Greg to do them!

Kim Wheeler - ⭐⭐⭐⭐⭐

 

Cristina Kinnard - Gregg answered my call the first time, set up an appointment for my convenience; that same weekend and was prompt with my return the same day. We couldn't ask for anything better! Thanks Gregg I will be referring you to everyone!

 

Deborah Alexander - Gregg is amazing. He is fast and his communication. Is top notch, from the time he picks up your information to completing and even afterwards. He is knowledgeable. He is professional. He is friendly. Do not hesitate to reach out to Gregg for all your tax needs.

 

Michelle Luckner - During 2025, we lost our tax preparer. We were always happy with the process and were concerned because we had to start all over! I went out on a limb and reach out to a stranger....Gregg. My husband and I were so happy and thrilled not only with the service that Gregg provided but also the education that came along with that service. He is the best. He is efficient, fast and customer service oriented. We will continue to use Gregg's preparation/filing service as long as he will have us as customers. Thank you Gregg!!!

 

BevA Buckley - Gregg The Tax Guy did my taxes this year & did a great job. Gregg is very professional knowledgeable and I would highly recommend him in the future. Also his price was comparable to other tax companies. Tyvm Gregg

 

Kathryn Blundell - Absolutely brilliant! Gregg was extremely professional, prompt, an excellent communicator, and had our taxes filed within 48 hours of initially meeting him. It was the best experience we have ever had with tax preparation and filing. We highly recommend him!

 

Barbara Mallory - Gregg is amazing! He helped me wade through a mess for far less $$ than I anticipated.

 

Renee  Benson - I had my taxes done by Greg this year and had great service, I was a last minute client and he was excellent to work with. I won’t be doing my taxes anymore, as soon as I have everything for my taxes I will take to him and not wait til the last minute. I thought his prices were wonderful.

Leigh Corporal - Please use Gregg! He is wonderful, and I trust him 100%. The cost you pay to get them done is totally worth it and gives you peace of mind. I won’t ever use anyone else! He is simply the best!

Terence Masters - Exceptional, is an understatement. This year was my first time filing taxes as a business owner and Gregg made the process a piece of cake! He goes above and beyond for his clients, I’ll be back next year! Best experience ever. If you need a tax guy, look no further!

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Teresa Teddy - Tax preparation referral. I had a wonderful experience with Gregg Katz who came to me and completed our taxes, did an awesome job and brought everything back to me with explanations and addressed envelopes. Very Efficient!!!! I can’t give enough stars or kudos to Gregg. He is awesome! You will find him on Nextdoor. Give him a call.

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Greg Schmidt - Gregg was quick and efficient with our last-minute tax preparation. I appreciated his thoroughness and confidentiality. I normally do my own taxes, but ran out of time this year and Gregg stepped in completing ours (Federal & State) within a couple days. I'd definitely use his services if I need help filing in the future.

 

Karen Crane - Once again, superb tax preparation service from Gregg Katz. Picked up, prepared and delivered back to me in the same day. Affordable, up front pricing. Highly recommend!! ⭐⭐⭐⭐⭐

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Stacy A. - I want to highly recommend Gregg Katz for tax preparation. He is very knowledgeable, friendly and really fast at getting them done! He emailed a list to follow of needed documents then went through the list with our paperwork when he picked them up. He answered any questions and explained he does them in the order he receives them. We met late afternoon on the 1st and I got notification that my return from Kansas was pending in our account today! He dropped off the paperwork prepared professionally this morning too. 5/5 stars!

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Nancy Green - I would highly recommend Gregg for your tax preparation. He came to our home, sat down with us to review our information and answer any questions we had regarding filing of our taxes. He completed and filed Federal & State tax forms electronically, confirmed acceptance of the forms, and returned our copies the following day. I would give Gregg: ⭐⭐⭐⭐⭐

 

Michelle Luckner - If you are in need of tax preparation services, please reach out to Gregg K. We had reached out to Gregg for taxes this year as our tax guy did pass this past year. Gregg had big shoes to fill and I must he say he exceeded our expectations. He did come to our home and went through our documents with us, then had the returns done and filed by the end of that day. Wow! Fast, efficient and friendly! Thank you Gregg, we will be back next year!!!

 

Deborah Alexander - I have to give a HUGE shout out to Gregg Katz. Gregg did my taxes today and the result was fantastic! He is very thorough, explains everything and fast. He opened my eyes to a mistake made last year that was shocking how wrong it was. I definitely will have him do an amendment for my 2024 taxes.

 

LuAnn Fox - In an age when it seems impossible to find someone you can work with and like in important financial matters, Gregg Katz is a standout. He's a needle in the haystack of professionals who do your taxes. His brand of professionalism, humor, and outright plain humanity doesn't read like a brand. It's all him. For the first time in years, I have my taxes done right—the first time. When he met me I was navigating some new life transitions, and his knowledge, patience, and grace floored me. His communication is terrific as are his fees for the services he expertly provides. You will be so happy you are working with him when you decide to switch.

 

bp - Gregg Katz is a Marine vet who has built a business around cleaning up the taxes for others. He is clear, concise and direct to the issues you are worried about, slicing them down to manageable talking points so you will understand what is happening, what is your responsibility and what is due you and how he can assist you. He is organized and works with focus and integrity, he will meet with you where you are comfortable. He doesn't talk in circles, he's been doing taxes for a number of years and is quick to clarify confusing topics so you can understand. Personally, I was behind, he didn't blink, told me what he needed, when we met he explained what I could expect, delivered the paperwork within a few days, explained the process involved, how to pay, and that was that. 3 days from first contact to completion. 10/10 recommend.

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Brittany Dunn - Anyone still need help preparing your taxes? I HIGHLY recommend Gregg Katz! He has over 30 years of experience and can handle everything from simple to complex situations... he’s your guy! He only charges a flat fee of $200 and even comes to you, which makes it so convenient. He’s incredibly knowledgeable and really takes the time to break everything down so you fully understand it. We had a more complex filing this year, and he walked us through every step. We will definitely continue using him every year... I’m so happy we found him!

 

John B. - Are you looking for someone to do your tax return this year or into the future? We have had H & R Block for the past years, but decided to give Gregg Katz, the Tax Guy, a shot at our return. I cannot emphasize enough how pleased we are with him. He’s extremely knowledgeable about past and present filing rules and processes; he came over and picked up our paperwork, completed it, and returned two days later with our state and federal filings, along with pre-filled out envelopes. His fee is a flat $200 regardless of the complexity of the return. We highly recommend him!

 

Ken Jennison - Just had my federal & state tax returns prepared and e-filed. I saw Gregg Katz on ND with his post on Q&A on what’s changed and went with him. He charges a flat rate of $200 and had mine completed within a day of when I handed them off to him. I’d recommend him if you’re looking for a cost effective way to prepare and file your taxes.

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Brian Wood - Great advice Gregg, as you know we learned this lesson ourselves with turbo tax. Glad we found you on this platform. If anyone on here is looking for a tax pro, Gregg is top choice. We used him for the first time this year and he saved us several hundreds! His service is excellent and price is unbeatable. We will definitely be using him moving forward. Thanks again Gregg.

 

Jessica Alger - Just wanted to post about the wonderful experience we had with Gregg Katz. Contacted Gregg to do our 2025 Federal and State taxes. We just recently moved to the area in November and wanted to insure that our state taxes were done correctly. Gregg responded right away. We provided the needed information and he got our taxes done and efiled the next day!! He also guided us through some IRS pin issues we had. Highly recommend him if you are looking for someone to do your taxes. Very reasonable also.

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Julie Wallace - I just had my tax returns prepared by Gregg Katz. To my surprise they were completed within about an hour after he picked them up from my home. He is very professional and makes the whole tax process less nerving. Also, his fee is the best. My impression of Gregg, and I just met him for the first time, is he is a guy that likes helping people.

 

Susann White - If anyone is looking for someone to help with taxes this year, I highly recommend Gregg K. He is extremely knowledgeable, very thorough, and completely up-to-date on all the tax law changes this year. He took the time to go through everything carefully and actually saved me money! If you need someone trustworthy and detail-oriented, Gregg is a great choice.

Patricia Ernst - If you are looking for someone to complete your 2025 taxes, or previous years, I highly recommend Gregg Katz. I found him on Next Door recommended by another client. He responded quickly when I asked if he was taking new clients. He met with me and no tax question was too small. He had my taxes completed in 24 hours. He was formerly in the military and very reasonably priced. I am a satisfied customer.

 

Belinda Endicott - I wanted to give a shout out to Gregg. I was in need of a tax preparer and Gregg was recommended. He was professional, communicative, efficient, knowledgeable and prompt. I will be using Gregg again next your.

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Sue R. - I want to give a hugh "THANK YOU" to Gregg Katz. I highly recommend Gregg. He is very professional, knowledgeable of taxes, quick to respond, he communicates and his price is very reasonable.

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Claire Teater - Gregg did my taxes within two days. It took that second day because I had to supply a PIN. He's professional, courteous and fast! Highly recommend him!!

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Kk Shewolf - Great price. I highly recommend Gregg for tax services as he went above and beyond getting me caught up from a domestic abuse situation and I actually had sizable refunds due me! He takes the mystery and fear out of doing taxes regardless of your personal situation for the most reasonable pricing with a personal dedication for doing the best he can!

 

Katie Timm - Reasonable price. Gregg was so easy to work with. He was fast and dependable. He even did further research into my personal situation and answered questions I had. He comes to your house, making it very convenient. I referred another friend to him and she had the same great experience. Highly recommend! I will be using him every year!

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Shirley Cochran Sandoval - Just giving a shout out to Gregg Katz for tax preparation. He came to my home, reviewed tax documents and had them completed and delivered by 4:00pm the following day. He is very reasonable and courteous.

Rebecca Watson - I just want to highly recommend Greg Katz as your tax preparer. I used him, he's fast, efficient, very professional and friendly and affordable. He met me at a place of my choice, and then I was comfortable to let him drop them off when he was done. It took one day. 5 stars.

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Jane M. - Greg, thank you for your help and your patience with my questions. You gave great explanations to my inquiries and was much appreciated! I highly recommend Greg to help with your taxes.

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Kathy Watkins - This was my first year to use him, and he was great. I’ll continue to use his services, and have given his name to several of my friends.

 

R Sardis - Great price. If you're looking for a quick and friendly tax professional, Gregg is the one to call! He knows all the ins and outs of taxes and will make sure you understand everything along the way. Trust me, you’ll be happy you chose him for your tax needs!

 

Bill Stark - My wife and I HIGHLY recommend the tax preparation services of Gregg Katz. He is incredibly thorough while explaining every single question one may have. He prepared our tax statements in a timely manner and even drove to our residence to start the procedure. As he served his country as a U.S. Marine, he is very prompt and regimented which we sincerely appreciated.

 

Chris Graham - Hey neighbors, if anyone needs a tax guy contact Gregg Katz. We recently discovered our normal CPA has retired and found Gregg from an exceptional recommendation on The Olathe Connect Facebook page. He is fast, personable and reasonably priced and we highly recommend him. Just wanted to share with everyone.

 

JoAnne Grossman - Thank you Greg, for getting me caught up down to the wire. The reviews were truer than true. FYI, he's real and a very kind and knowledgeable man.

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Barb Blauw - I recently worked with Gregg Katz for the preparation of my taxes. He is knowledgeable, professional, and even came to me which made it super convenient! I highly recommend him for your tax preparation needs.

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Barbara Perry - I had a small backlog of tax years to take care of and new parameters having met the golden standard of 'elderly' (65). Totally freaked out prior service (Marine Corps) when I saw Greg Katz's post advising on tax issues and offering to assist for a decent fee. Plus, you know, he's Marine. If you can't trust a Marine to have your back in a jam, who can you trust? I snagged his email and when I finally contacted him he had things cleaned up w/in 3 days.

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Jonathan Ringelspaugh - Reasonable price. Greg has been doing my taxes for years. He’s great! Always finds deductions for my business and gets my return done quickly. Thanks, Greg!

 

Teresa Blystone - Great price. Gregg was fast efficient and came to my home to prepare and return everything! Service is impeccable and so is response time. 5 star all around.

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Dj Castilleja - Reasonable price. Gregg was a real help. He gave guidance and direction that made completing my taxes quick and efficient. I highly recommend.

 

Angela Grevas - Great price. Gregg did a very thorough and timely job on my taxes. I highly recommend him!

 

Ty - Great price. Gregg was super nice and easy to work with. We’re very happy to have our taxes taken care of moving forward! Thank you Gregg.

 

Sparks - Great price. Gregg is the utmost professional and we highly recommend his services.

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Julie W - Great price. Gregg is very knowledgeable and thorough. He's my "go-to" man for taxes.

 

Herb Avery - I used Gregg Katz as well. Way better return than previous tax people, very personable, knows all the new tax laws. I will call him again next year.

 

Carolyn Jobe - Contact Gregg Katz. He is very good and got my sons done and back in two days.

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Geralynn Baxter - Are you needing your taxes done? I used Gregg and he's very affordable and timely.

 

Kalynn Conklin - Reasonable price. Working with Gregg in getting our taxes filed was a pleasant experience. I highly recommend him.

 

Rebecca Watson - Reasonable price. Mr. Katz was very efficient and professional. I would recommend him.

 

Claire Lenz - Great price. Fast, knowledgeable, efficient, informative, nice and easy to deal with.

 

Christine Weitze - Gregg was very easy to work and provided me with a lot of help!!

 

Jacqueline L. - We used Gregg to do our taxes and so pleased with the service.

 

John B. - Gregg is solid.

 

Hope Biggs - Great price