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(877) 552-9224



13610 Barrett Office Dr Ste 200, Ballwin, MO 63021

Closed Now

9:00 am - 6:00 pm

Regular Hours

Mon - Fri

9:00 am - 6:00 pm


9:00 am - 12:00 pm



Your Hometown CPA Firm

Extra Phones

Office: (314) 238-1700

General Info

We understand that every dollar on your tax return is something you worked hard for. Let us help you find every dollar and get your maximum return.

Payment Methods

Visa, Master Card, Amex, Discover, Debit, Check, Cash


On site parking


Barrett Office Park off of Manchester Rd.




Member AICPA Member MSCPA

Languages Spoken

English, Vietnamese

GALLERYView All (1)

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  • Triton Group puts the EZ in the 1040EZ

    As a Realtor by trade dealing with contracts, deadlines, negotiating and more, I met my match with three tax returns that sat in procrastination station til deadline day because they were suppose to be EZ. Those two letters surely fooled me!

    This is a big shout out to Mike Riordan with The Triton Group for being willing to go the extra mile to get me on track on time and teach me a little in the process. Mike's expertise, patience and flexibility turned a stressful TO DO into a WELL DONE! Thanks Mike!

  • IRS issue resolved because of Triton!

    I had an IRS collection issue come up with my ex which had me in a slight panic. Mike Riordan suggested that I file an innocent spouse form, and the IRS has now granted relief for me, which means they will ONLY go after my ex for the money owed to them! I had already spent 9 months battling with the IRS about this, and thanks to Mike, I am now free and clear of this and can finally sleep at night!

  • Handles Accounting for all of my Businesses
    Joe Ord

    Mike and the Triton team have been handling my taxes for two years now. I have several different income streams and business entities so my return can get complicated fast.

    I also do not have a problem admitting that I can be a difficult client.

    I am always impressed with the final product Mike puts together and his level of knowledge.

    I refer Mike and Triton Group to other buisness owners whenever I have the chance.

  • Small Business and Personal Accounting
    Bright Beginnng

    I have been in business for 20 years and have had 3 different accounting groups. Triton group has gone above and beyond the other 2 accounting firms at being proactive with financial advice. I use the Triton Group for daily accounting needs and personal and business taxes. The staff are very friendly and prompt. I would highly recommend this group for your accounting needs.

  • Small Business Accounting

    Our small business has been very pleased with The Triton Group. Not only have they been a great help with taxes and accounting questions they have also helped our firm to maximize deductions. They have a knowledgeable staff and I will continue to recommend them to all.

  • Small Buisness Accounting

    I have a small manufacturing Company of 13 people. The Triton Group has given me great input on acccounting and Tax considerations to help me successfully run my buisness. I would absolutely recomend them. However you must get in line behind me.

  • Mike

    My family asked Mike for help a couple of years ago and he found out that we had been overpaying our taxes a lot for the past few years. He then filed them correctly and we had a big refund for the past 3 years. We would very gladly recommend him to everybody . He does a very thorough job.

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