Tax & AccountingBookkeeping Services in Tustin, CA

We are a full suite accountingbookkeeping firm in Tustin offering tax preparation / tax planning as well as individual and business services.

Tax Services

Personal and business taxes, IRS problem resolution, amended tax returns, tax planning & more.


Individual Services

Experts for wealth management, estate planning, elderly care & investment tax services.


Hear Why Our Clients Love Us

  • Maria Urquizu
    Linda Williams is a top professional, highly valued for her knowledge and expertise.
  • Carlos Zazueta
    My experience with Linda was Great, I had a very difficult situation and she excepted the challenge and went above and beyond to help me so I’m very thankful for that.
  • Brittany Alvarez
    I've had to pleasure of working with Linda a few times over the years. She goes above and beyond to ensure the job is done exceptionally well. She truly cares about her clients and works tirelesly to deliver perfection. I've recommended her to several friends and colleagues, all who have had a similarly wonderful experience. She is someone you want in your conrer!
  • Rob St Onge (RealtyDude)
    Nobody understands the numbers better than Linda!
  • Kristina Hudson
    I have worked with Linda, for many years and I cannot say enough good things about her. I highly recommend her, she is very knowledgeable.
  • Patrice Madderra
    I cannot recommend Linda Williams Tax Service highly enough! From start to finish, Linda is the epitome of professionalism and organization. She has an incredible ability to simplify what can often feel like an overwhelming process. Every detail is handled with care and precision, and she makes sure to answer all your questions with patience and clarity. Linda’s level of preparation is unmatched—she is always one step ahead, ensuring nothing is overlooked. I was especially impressed by how she customized her approach to my unique situation, making me feel completely confident and stress-free throughout the process. If you’re looking for a tax professional who is knowledgeable, meticulous, and an absolute pleasure to work with, Linda Williams is the one to call. She truly sets the standard for what excellent service looks like! -Patrice If you’re looking for a tax the standard for what excellent service looks like!
  • Raul Barcena
    Linda has been awesome since I started working with her many years ago.
  • Evon Mcmurry
    Paramount Tax and Account has done amazing work year after year resolving my taxes without any issues. There is no other company I would entrust to take care of my taxes filing other than Paramount Tax and Accounting service. You cannot go wrong utilizing their services and professional expertise I assure you.
  • Greta Mitchell
    Thank you Linda your awesome in helping me. I couldn't have did anything without her knowledge. , save me money that I didn't see coming .Thanks so much for your tax knowledge and accounting experience.
  • Christina Acevedo
    Tax season has never been one I looked forward to until I came across Linda Williams. She is a gem! I can say that she was with me every step of the way. She was very patient with me and helpful answering all of my questions. It has been a great experience working with Linda and finally being able to trust someone to file my income taxes without any issues. I would definitely recommend Linda
  • Vicky Iniguez
    Would highly recommend this place. Linda is a professional.
  • RALLO 2k4
    Wonderful experience very knowledgeable I would highly recommend to any one seeking an honest tax Accountant that will not only help you but is also willing to show you to manage your money to get a better refund
  • Magic Gypsy
    Linda Williams is the BEST and I am so lucky to find her!!
  • Lesley Abbey
    Linda is a pleasure to work with - she is knowledgeable and very responsive/attentive. Definitely recommend!
  • Angeli G.
    Linda is one of the best in the area! I was so scared to do my taxes after my divorce and she was so helpful that she helped me out right at the last minute! She is very informative and precise with her work! Definitely going back to her again!
  • John Mclaren
    I had an outstanding experience with Paramount Tax and Accounting in Tustin! Linda was incredibly helpful, filing my taxes seamlessly in under an hour through a quick phone call and a few emails. The level of customer service was amazing—she went above and beyond to ensure everything was handled perfectly. I can’t recommend Paramount enough for anyone looking for efficient, professional, and friendly tax services!
  • Dylan Nguyen
    Linda is amazing!
  • Jaylene Dorris
    Linda is my go to for taxes and really anything financial. Not only does she respond, but she is honest and will tell me if she doesn’t know an answer AND THEN ….she will take the time to research and find the answer!! She is thorough and explains things in detail, but in a way that she knows I understand. She tells me ways that I can save money on taxes in the future. If you want someone who responds, answers their phone and is no BS. Call Linda.
  • Gabriel Reynosa
    I absolutely recommend ParamountTax & Accounting. Linda is professional, efficient , and very knowledgeable . I have trusted Paramount Tax for many years and will remain a loyal customer. I have referred many of my family and friends as I know they will be in good hands. In the onboarding call she gave me an overview of the process, including common FAQ’s and tips for everything to go smoothly. She communicated with me everyday and I felt confident I could rely on her to get the max refund. If you want something done right, done thoroughly, and with the most insight then you need to work with Linda for your taxes!
  • John Flores
    The experience you will have working with Linda makes tax season an ease. She makes the process simple and easy. She is very knowledgeable with maximizing the process. Her integrity and selfless care shows with every interaction. I would highly recommend her to handle your booking keeping or taxes 💯.