Jeff is great. This was my first year using him and I'm very pleased. He got me in and out in a timely manner. He is very thorough in his answers and always answers the phone if you have questions. His wife is also a very wonderful lady. I will continue to come back and send referrals. read more

Jeffery Rondini is very rude. I called his office explaining I was trying to upload my father's taxes to the portal. I simply followed all instructions to register for an account. The next step was to wait, to receive an email with further instructions. I never received the email, so I decided to call. He was rude from the start. I simply told him sir I did everything I was suppose to do. He was very adamant that I had to a mistake which I didn't. He didn't even try to look into the problem or see who I was filling for. I'm going to make sure my father save his $400 dollars from now on! read more

I've been going to Mt Diablo Tax Pros for about 5 years now. They are absolutely the best! Very informative and helpful. It's so much better going to them, than trying to work through turbo tax and make guesses. I turned in my documents about a week ago and they already finished all my taxes and should be getting a return in a couple of weeks! read more

I rarely leave negative reviews, but I had an unprofessional experience with Mt. Diablo Tax Pros. As a first-time tax filer--recently purchasing a condo and managing student loans--I reached out to a local professional service to ensure my taxes were filed correctly. I chose Mt. Diablo Tax Pros because I support local businesses and had seen positive reviews online. During my consultation with Jeff Rondini, I inquired about the firm's experience with issues related to homeownership and student loans. However, I felt that the questions were posed in a condescending manner. When I mentioned that I was a recent homeowner, I was questioned about the legitimacy of my claim. Jeff then proceeded to ask detailed questions about rent, mortgage payments, property taxes, HOA fees, and even assumed I had children--an assumption that seemed to be based on background noise from a nearby coffee shop rather than my actual situation. While I understand that asking detailed questions is necessary to determine the proper filing status, the manner in which these questions were asked made me feel uncomfortable. I recognize that tax season is busy and that professionals may be under pressure, but I did not appreciate the customer service I received. read more

Great service and prompt as well. Always a pleasure to do business with. Highly recommend

My wife and I have been using Jeff and Meg's services yearly for several years including today's visit. Jeff is knowledgeable and prompt, I just wish we had discovered them sooner. They also take care of the kids' returns and we appreciate that so much!! Thank you and we'll return every year!!! read more

Beware: Unprofessional Tax "Expert" with Aggressive Behavior My experience with Jeff Rondini at Mt. Diablo Tax Pros was nothing short of a nightmare. Not only did he display a shocking lack of client service skills, but he also resorted to insulting and threatening behavior, making the entire process a harrowing ordeal. A direct quote from his email, "You're messing with the wrong Italian honey." Are those the words of a professional of 27 years. I will be reporting him beyond social media platforms, so that he can explain his behavior of ethics to a board of his peers. Avoid this male chauvinist. read more

Jeff & Meg are great! Jeff has been doing our personal and business taxes for several years now. He always does a great job for us during tax season, and gives us tips throughout the year on how tax laws have changed and how we might be able to qualify for additional deductions. Meg has been a great addition to the business. She's able to review my documents and let me know if anything is missing, so that once my file gets to Jeff, he can move through it smoothly and get it filed. I'm grateful to have a tax advisor that I can trust. Thanks Jeff and Meg! read more

Jeff went ABOVE AND BEYOND and made concerted efforts to help us. He worked in a professional and efficient manner. We had a tight timeframe and he was able to provide the service we needed within crucial guidelines. We very much appreciated the service we received and will continue to use his excellent services. read more

Jeff Rondini messed up my federal and state tax returns and then wrote me a letter calling me a deadbeat. His mistakes caused me significant financial loss with State and Federal tax authorities and he doesn't care to help. I've asked for an apology but seems like that won't happen and so I will take it further. Give this place a miss and save yourself grief ! read more

Jeff and his wife have an amazing business and are so attentive! This is our first year using him, and not only did he explain everything very thoroughly, he took the time longer than our appointment to make sure that we understood everything! His service is amazing, and they are extremely quick to respond. I am a local fireman and was referred here by many of my coworkers, he truly values his clients and I will never go anywhere else! read more

I've had better customer service at bars that I've gotten kicked out of... I asked a simple question via the Yelp app that apparently got the owner's panties in a bunch. See my photo for this brief interaction. Seriously, don't complain because Yelp monitors your response time, or because you can't respond to people's inquiries within the timeframe you're advertising (i.e., 1 hr). It's not my fault you were asleep - or God knows what else - when I asked a simple question. This interaction was enough for me to look elsewhere and waste 5 minutes of my life writing this review. And...who the heck is Charlie?! smh read more

Contacted Jeff to do my taxes one more time since I moved out of state. I figured it would be the easiest way to do it since I sold my house. I was completely wrong. First I noticed that I would send emails with the requested information that somehow were either lost or not read, then there was the complete mess with the payment. He requested that I pay using Venmo or Zelle, both of which I do not use. I use Paypal mainly and prefer not to have my information on several different sites. I offered to pay over the phone with a credit card and was told I would be charged a $35 fee. Feeling I had no other choice I made a Venmo account to pay for this transaction and contacted my bank to cancel the check. After completing this transaction, I was told "Next time, don't lie about sending money" and then accused of putting my "file in a constant state of delay this year". Finally adding that he was "glad to be done with it". I have never dealt with someone so unprofessional and insulting. read more

Very professional and kind. Direct, assertive, and knowledgeable! He helped me with a tax form I knew nothing about! Thank you for your help! read more

I needed help with my taxes that TurboTax couldn't provide, so I got in touch with Jeff. He was able to fit me in around a full schedule, and take care of my return in under an hour. Highly recommend! read more

I can't say enough good things about Jeff and Meg. They are extremely responsive and were willing to take myself and my partner on as clients even though the schedule was fully booked. We moved to California partway through the tax year, had a recent property purchase, military retirement, incomes from multiple states, and Jeff navigated all of it for us and answered all our questions. When I later received a notice from the Franchise Tax Board and reached out for help, Jeff reviewed it and helped me figure out how to resolve the issue. We will definitely be using Jeff as our tax preparation service going forward. It sounds like he does have an extensive repeat client list, so it works to your benefit to get in touch with him early if you need his services and are a new client. read more

I am setting-up a business and have been shopping around for advice from a professional. After consulting with several professionals recommended on here, I came upon Jeffrey. And I am glad that I did. Where the other conversations I thought were helpful, Jeffrey offered his complete honest opinion for what would be the best route for me to follow without any regard for how he could could profit from my choice. I felt like I mattered most. He is incredibly knowledgeable, very professional, a great no-nonsense guy, the kind of partnership I am looking for in an accountant to help me as I embark on this new journey. My mind is made up. I will be working with Jeffrey from here on. read more

A gem for Clayton, Mt Diablo Tax Pros! Such an excellent service! Jeff and his staff worked to resolve my mistakes in prior tax's as well as advised on how to setup my wife and I for success. My wife and I truly appreciate the excellent service. Very fair prices and I highly recommend Mt Diablo Tax Pros! read more

Would not recommend Jeff Rondini. Not only arrogant but condescending. Moreover, insulting for inattentiveness as by all indications he didn't read what I had written and documentation provided. My tax refund was reduced by a penalty. Requested payment of the difference since I have never had any penalties and always pay on time for what tax preparer tells me. I was met with blame that it was my fault and with indications that what I had written and provided to him were totally ignored. Jeff's response was an offer to reduce tax prep fee next year. The amount was not huge but the lack of integrity and admission is huge. read more

Horrible experience last year. I inquired about my tax forms for student loan interest and he brushed me off. Come to find out that I will be getting way more than he quoted me for it for the last 4 years and even made me feel dumb for even asking about about it. I felt very rushed during my experience. Definitely would not recommend for any one looking for a new tax person in the Concord area. read more

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. read more

Mr. Jeff Rondini is an exceptional tax professional. He is nice decent person, expert and very knowledgeable when it comes to all tax related matters. The wait is never long at his office. Mr. Rondini went above and beyond to help me when he knew about my situation. He never accepted to charge me a penny since 2017. No word can explain how decent, professional and expert he is. On top of that a great person to deal with, humble and honest. Definitely he will be the one to go for my taxes for the years to come. I can't thank him enough for all his done. read more

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! read more

Very late review! Had review saved in my drafts. Jeff was awesome! He does look a little different than his photo, but he is a very genuine person. He excels at what he does. I will give him my repeat business even if I move completely out of the Bay Area. He's that good. read more

That was an amazing experience! I called Jeff with a question related to property taxes and he spent 43 minutes on the phone describing various details and clearing out a whole picture. It seems like he just won a new loyal client! :) Thank you for your help, Jeff! read more

We scheduled a consultation with Jeffrey for some tax questions since we planned to move out of the state. Jeffrey really knows tax rules inside out. He answered all of our questions concisely but precisely, along with suggestions what we should do to minimize taxes. He didn't even charge us at the end of consultation. I am deeply impressed. Will definitely recommend him to anyone who needs a professional tax accountant. read more

I found Mt Diablo Tax Pros on Yelp only a couple weeks before the tax deadline. Everyone else had declined to do business with us, because we waited too long to get help. My husband and I just moved to Contra Costa county and we had a lot going on, so taxes fell to the bottom of our priorities. Thankfully Jeff and his team took us on, despite being very busy with other clients. We are so grateful that he did, because he literally made all our tax problems disappear. Due to the COVID restrictions, the process was all done online. But, when he was finished, he did ask us to come in to the office so he could explain everything, which I greatly appreciated, because my husband and I are completely lost when it comes to taxes. Jeff is a very intelligent person and extremely knowledgeable about taxes, laws, and finances. He took his time with our appointment and answered all of our questions thoroughly. When we were done, my husband and I felt like we had a huge weight lifted off our shoulders knowing that our taxes were finally done. After meeting with Jeff and Meg it is obvious that they truly have a passion for helping people. My husband and I highly recommend them for all you tax needs! We plan on doing business with Jeff and Mt Diablo Tax Pros every year now. Thank you Jeff and Meg! read more

Mt. Diablo Tax Pros was suggested to me by my financial services professional. I am a first time client of Jeffrey and Margaret Rondini at Mt. Diablo Tax Pros after my long time CPA had retired. I was very pleased with the services provided. It was a seamless transition from my prior tax vendor. Jeffrey talked me through the process and logic of my families tax preparation at my appointment and I walked away with everything sorted. I was very satisfied and felt safe with my decision to go with Jeffrey and Margaret at Mt. Diablo Tax Pros and I'll be back. read more

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! read more

I have been going to Jeff for 5 years now. I love walking into his office to see his friendly smile. He's super efficient and I have 100% trust in his knowledge and skill. I don't think I could ever go to anyone else. I have had so many issues with my personal taxes that Jeff has helped me through. I don't know what I would do if I had not met Jeff. Thank you so much for all your time and patience. YOU ROCK! See you next time. I'm sorry this review was not done sooner. Give Jeff a try. You won't regret it. read more

Call this guy at 8 am and left him a voice mail. Received a call back around 8:15, the first thing out of his mouth was a complain that I called him at an "ungodly early hour" and what can he do for me. Thanks but no thanks; the second star is for calling back. read more

Had an extremely shitty day & was not looking forward to ending that shitty day with getting my taxes done. But I was pleasantly surprised. Jeff & his wife are awesome! So nice, funny, & knowledgeable. I will be going to Jeff from now on!! read more

I just went to see Jeff to ammend taxes that another "Tax Professional" had prepared for me. It is the first time I have ever needed to do this. I picked him due to the high reviews and praise I had seen, just to get a second opinion. It was a grest decision and he will be doing my taxes from now on. His experience and knowledge of current tax laws showed how professional he is and he was able to keep me from losing out on $6000.00 the other guy missed. Thanks Jeff, see you next season! read more

I was referred to Jeffrey Rondini by a friend in real-estate. He was able to help me in so many ways. His knowledge in his field is unparalleled. I know very little when it comes to taxes. So it was a breath of fresh air to have someone, not only help you, but educate you on what it really means to do your taxes. I will be referring anyone looking for real tax professionals to Mt. Diablo Tax Pros and to Jeff Rondini. read more

Excellent service. Gets things done on time and we'll. Has been great to answer questions for those who aren't the most literate in tax law! Have been a happy client for 5 years. read more

Absolutely will recommend Jeff for taxes. My mother passed away leaving myself and siblings with some complicated taxes and issues to contend with. Jeff helped us ...and I'm so grateful he took us on as clients. I don't think we could have found a better person for the job. He is intelligent and thorough and got the job done. Thank you Jeff! read more

After 18 years my CPA retired and I was nervous trying to find a skilled new accountant. Fortunately, I met Jeffrey and Mt Diablo Tax Pros. Jeff and his wife Meg were most welcoming, very kind and extremely helpful. They worked with my complicated paperwork immediately and were able to complete the filing process in a short period of time. I was so impressed by their professional knowledge, sincerity and reliability that I can only say I was very lucky to find them. MH-Alamo read more

Great person to deal with, he is very down to earth, help us with the 2017 and 2018 taxes that was due, thank you so much for your professionalism and your help Mr. Jeff Rondini read more

After going to a different CPA for about two decades and discovering many mistakes, I decided to try someone closer to home. Jeff was professional, swift, and accurate. My only regret is not switching sooner. Will definitely be back again for the next tax season and any other consultation needing tax advise. Thank you!! read more

Jeff is very knowledgeable and professional. He answered my questions and I felt an instant trust due to his experience. I highly recommend him and will definitely continue to obtain his services. read more