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Tax Preparation for Today &
​Tax Planning for Tomorrow!

You think of doing taxes as a burden. We think of them as an opportunity.
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About Us

We stand apart from other financial firms in that our tax team has created and maintains its own systems to oversee and discover new federal and state tax law activity and to estimate how and when proposals may impact you. Furthermore, we are always striving to uncover existing and less utilized tax code that can enhance a clients financial outcome.

Call today at (303) 858-0000 for a free consultation and guaranteed pricing. We have experienced tax professionals who specialize in personal, business, and trust/estate returns and are willing to work when, where, and how you want to complete your taxes accurately and on time.  

Services Offered


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Personal Income Tax Preparation

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Business Tax Preparation

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Estate/Trust Tax Preparation


We can prepare past and current returns, regardless of changes in your status or the amount of W-2’s.   We make tax preparation easy for you with drop off services, payment from your refund and we can mail your finished return directly to you.
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Tax laws are always changing, and noncompliance puts your business at risk – our certified public accountants keep these changes to help keep you compliant. We offer a wide range of tax planning and return preparation services for a variety of corporations.  
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Proper planning can reduce the heartache – and the burden of taxes – your heirs will have to endure during an already difficult time. Our experienced professionals can help you with estate planning and the preparation of estate and trust income tax returns.
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Proactive Tax Planning

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Estate attorney

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Financial Services


Even small reductions in your tax costs today can have a big impact on the amount of wealth you're able to build over time and how quickly you build it. Our highly experienced team provides comprehensive tax planning to individuals and businesses with seamless communication with your wealth management team.
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Coordinating...... holdings with your wills and trusts for superior confidence in estate planning. Your simple and streamlined estate planning process begins with a complimentary consultation with Jennifer R. Bailey, Esq. at the Tier One Tax office. Jennifer is a partner with Robinso​n Bailey PC, a boutique law firm that specializes in estate planning & trust and estate administration.
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Integrating.... your investment strategies with your tax strategies to increase wealth. Updating..... your portfolio using the modern investment products and programs.
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Tier One Wealth Management is a Registered Investment Advisor.
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Vicki has been doing our taxes for 10 years. She is thorough, timely, trustworthy, and personable. I look forward to tax season because not only do I get to see Vicki but the process of filing is so easy. Everyone at Tier One Tax is friendly and welcoming. I would highly recommend Tier One Tax.
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Centennial, CO
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Extremely helpful, Joseph was outstanding, knowledge able and friendly. We  got my taxes figured out in no time! Will countine coming here with my business.
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Jeremy G.

Grand Junction, CO 
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01/16/2020

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​My husband, daughter and I became clients of Vicki's last year.  When picking something, no matter what, and using just the information on reviews there is always a small amount of doubt.  We will never use anyone else.  Vicki is very professional, patient and soft spoken and thorough.  She also offered to review our previous years taxes as we were nervous about the tax office we had both used.  She reviewed both returns at no charge.  I feel very lucky to have found this office and to have been directed to Vicki.  I would recommend Vicki and this office to anyone with confidence.
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Diane S.

Aurora, CO 
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02/26/2019

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​Vicki has been doing our taxes for 10 years. She is thorough, timely, trustworthy, and personable. I look forward to tax season because not only do I get to see Vicki but the process of filing is so easy. Everyone at Tier One Tax is friendly and welcoming. I would highly recommend Tier One Tax.
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Jennifer J

Castle Rock, CO 
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I've been having Ros Aguinega do our taxes for probably the last 8 years or so. She moved to Tier One about 3 years ago and we naturally followed her.
She is very professional, detail oriented, pleasant and always has our best interests at heart. Continuing to look for ways to save us more money every year.
The office staff has always been very friendly as well.
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Charlie M.

Castle Rock, CO
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4/15/2019

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Got my taxes done here for the first time. My tax specialist was very professional and the charge was much less than I've paid in the past. Also received a tax rebate for the first time since I can remember. Going back to Tier One Tax next year for sure.
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Carole P.

Littleton, CO
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03/09/2016

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​Suzanne Burrill was/is an awesome professional. She has been doing taxes and accounting for years, and it shows.  This was the first time my family and I used her for our returns.  We are always a little bit complicated, and as a group, a little bit unique to work with, and she did an incredible job for each one of us.  She spent about 4 hours getting the 4 of us completed on a SATURDAY!  One return was simple; the next was a little more complicated with multiple w2 and educational considerations; the next had more forms, more complications, including disability and outside income; and the final one was worse than all 3 of the previous ones, with contract employment, estate income, health insurance, and self employment.
She was great.  She has a very inviting friendly personality, and smiles a lot. I have been telling all my friends about Tier One Tax.  AND, it is a beautiful building.
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Pamela S.

Castle Rock, CO
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03/24/2016

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​I am very pleased with Tier One Tax! I had Chuck as my tax preparer and he was very professional and also has a "unique" sense of humor. Last week I was dropping off my tax info for Chuck and I was greeted by a couple of people- it was just good customer service. I was also pleasantly surprised when I was told what my fee would be for my tax service.....it was less than I had paid in previous years! Another nice service I was told about was that Tier One Tax has educational workshops throughout the year!  Chuck mentioned a few but I believe the  next one will be Identity Theft and Fraud presented by the CBI and then a few weeks later a Shred Day! I hope I will be able to attend as I am very interested in this topic and for sure I have some documents to shred. I rarely write reviews-- although I admit I always read them-but I was very impressed with Chuck, the service and the educational workshops that I felt I should write a review!
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Kathy L.

Englewood, CO 
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3/9/2016

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We are writing on behalf of Ros - we have been her client for many years now, and when you are providing all of your financial information to someone, especially when it comes to something as important as your taxes, you want a person you can not only trust, but also a person that knows the codes and laws.

With this years many changes to the code, we honestly didn't worry one bit; we knew we were in good hands. Every single year, she just amazes us with her abilities; this year was no exception. Thank you Ros for always having our best interests in mind. Well done as always.
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Micah and Jana

Castle Rock, CO
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04/05/2019

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​For sound sleep at night you want Vicki doing your taxes, simple as that. Our taxes have been filed by Vicki for many years now and she has demonstrated through her perfromance just how knowledgeable and proficient she is. Vicki will give you professionalism, honesty, patience, accurate work, and a smile to top it off with. You want Vicki on your team!
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Jim E.

Montrose, CO
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​I've been going to Ros for serveral years now to prepare my taxes. She is consistantly thorough and answers any questions I have. One great benefit is that she has my information from the prior year so she doesn't need a lot of time from me to get my returns prepared. She is an expert in her field, detail oriented, pleasant to chat with and has her client's best interest at heart both professionally and personally. Thanks Ros!
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Cheri S.

San Francisco, CA
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04/02/2019

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Suzanne works with you so well. She has helped me with all my tax concerns, and has gone above and beyond anything I could ever ask for. She has always shown a personal concern for our tax needs, and is always up to date with the latest tax info. I would highly recommend her for all tax needs! ​
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Sheri B. 

Elizabeth, CO 
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We have worked with Vicki for several years now and have found her to be professional and thorough with a great eye for details.  She makes tax time so much easier with her friendly personality!
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Lisa B.

Castle Rock, CO
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03/03/2019

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My husband and I have been clients of Ros for over 10 years.  She helps my husband with his personal business taxes in addition to our family taxes.  We appreciate her professionalism, her attention to detail, and the personal relationship we have created.  She sends us updates throughout the year and we trust her 110%!  Thanks Ros!  Highly recommend her for any and all tax preparation!
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Emily H.

Lone Tree, CO
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02/25/2019

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​Vicki Welty is a true professional!  She prepared my taxes thoroughly and efficiently, and is always  courteous and above all else, a genuinely kind person.  I trust her completely and am lucky to have her as my tax preparer!
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Julia A.

San Francisco, CA
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02/21/2019

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Jerry has been our tax professional for 7 years. We met him when we moved to Colorado and we've continued to partner with him for all our tax needs through moves to Texas and Tennessee. Why you ask? Jerry is professional, personable, detailed oriented, pleasant and always has his clients' best interest at heart! He provides superb client service year round whether it's taking the time to say hello or answering a complicated question. Thank you Jerry for the kind and caring person you are!
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Stephanie B.

Nolensville, TN
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01/30/2019

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Jerry Hindman is an exceptional tax professional!! Jerry has been doing our taxes for ten years or more and he is always looking our for out best interests. He is very honest and makes sure you understand what your options are. He is a very hard worker that keeps up to date on all the changes and we don't know what we will do if he ever retires. I have recommended him to our friends and they have been with him over 5 years. I would recommend him to anyone that is need of a tax professional.  

We met Garret Jeff the Founding Principal this year when Tier One Tax took their clients out on the George Town Loop Train.  We have never taken the train and it was so nice to enjoy some time with all the Tier One Tax Clients.  

Thank you Jerry and Garret for all you do for your clients!
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Wendy G.

Castle Rock, CO
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12/4/2018

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​Jerry is a great accountant and has been managing my taxes for three years after my lifetime accountant retired . I was in the financial industry so  I have some of the education  to know I'm getting sound advice at a very good price . Jerry is very through and thoughtful and with the many transitions I have been through I'm so lucky to have found him. Mimi N.
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Mimi N.

Englewood, CO
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11/27/2018

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I have been using Angela at Tier One for my Income taxes for the past 3 years. She is so easy to work with, efficient, great at explaining things, and makes the process as pain free as possible. Plus they are so reasonably priced!! I highly recommend Angela and Tier One Tax.
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Danielle M.

Denver, CO
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12/13/2018

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Jerry is so great to work with. He goes above and beyond - he has sat down with me multiple times to help me understand what the changes in my businesses means for our taxes. He's practical and helpful. And I have 100% confidence in him as our tax accountant. I'm so grateful to be able to hand it to him and know it's taken care of.
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Angie S.

Castle Rock, CO
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12/10/2018

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Contact Us Today!

Tier One Tax
​9380 Station Street, Suite 535
Lone Tree, CO 80124

(303) 858-0000​

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