Client Reviews

We strive to provide the best possible service for our clients. Please leave a review to let us know how we are doing and to share your experience with others.


Thumbtack Reviews


Grace R.


Individual Tax Preparation

Overall experience was good. Although, overpriced. I would highly advise to contact tax preparer to confirm their fees for service prior to making an appointment.

Jan 27, 2018


Margaret H.


Individual Tax Preparation


Prepared my 2016 tax returns. It was obvious how knowledgeable Mr. Rondini was through out the process. He was very easy to work with and extremely helpful in his explanation of the various entries/forms and attachments. It was a pleasure working with him.

Feb 6, 2017

Kenneth B.


My wife and I have full confidence in Jeff's knowledge, ethics and abilities. We greatly appreciate his care and concern in wisely managing our tax burden, and we find him to be a very personable gentleman who takes the stress out of tax preparation.

Nov 24, 2015

Ashley F.


Jeff prepared my 2014 taxes. He did a timely and thorough job, getting me the maximum return, without taking risks that would put me in jeopardy if audited. His expertise was greatly appreciated.

Nov 12, 2015

Mario C.


Individual Tax Preparation

Jeff was great. He explained everything as he was doing our taxes. I would highly recommend him.

Mar 7, 2017

Yelp Reviews


Michael B. 


I had a non-resident California state tax question and Mr. Rondini was very quick in his response, generously offering the guidance I needed even though it directed me away from his services. I am impressed with his integrity and professionalism!


Brandy L.


Our returns were subject to an in-office IRS audit this year, and Jeff Rondini was our super-hero! I was grateful for his calm demeanor and professional skill at puzzling through our situation. Not only did he make the audit process easy to understand, he was with me every step of the way. He made great arguments to the auditor on our behalf, and he sleuthed-out some errors that were actually in our favor. I will consider myself lucky to be able to continue to work with Jeff on "growing up" our business practices. Thanks Jeff!


Betty C.


If you're fed up on giving your money to Uncle Sam, then Jeff is your go to tax guy. Jeff will try his very best to maximize your returns. He is extremely knowledgeable and will give helpful advice on ways to 
My husband and I have found our tax guy and couldn't be happier with his services.

Google Reviews


Jill Carabelas 


I made an appointment to ask some questions about filing my taxes and about my deceased father's taxes.  Jeff was very knowledgeable, forthcoming and completely honest. He took time to talk with me at a time when he didn't have any and did not pressure me to use his service. I highly recommend this office!


Eddie Franich


After many years of using another tax professional, we felt it was time to make a change.  So three years ago, we made the change and started using Jeff at Mt. Diablo Tax Pros.  Since we own a business, he prepares our Corporate Returns, as well as our Personal Returns.  He is diligent in making sure he asks questions that might uncover additional deductions.  And, when questions have come up, after filing, he is there to help us understand what needs to be done in order to resolve them.  He also advises us on how we can best position ourselves to take advantage of possible deductions in future years.  Thanks Jeff!


Janelle Fautt


I have worked with a few other accountants through the years. Jeff by far is the most responsive and is diligent in understanding all of the details that go with filing. I needed help with self employment questions and he responded quickly and with details. He really seems to care about providing correct and pertinent information, and is thorough. I highly recommend working with him. I appreciate that he is available and doesn't leave me without answers. It helps with the stress that comes with taxes and filing.


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