Managed IT & Cybersecurity for Accounting & CPA Firms in Southern California
Protect Client Financial Data. Maintain Compliance. Eliminate Downtime During Critical Filing Periods.
Xperts Unlimited provides proactive managed IT and cybersecurity services for accounting and CPA firms with 10–200 employees across Southern California. We help firms safeguard sensitive financial information, stay compliant with data protection standards, and keep operations running especially during high-pressure tax and audit seasons when there’s no room for downtime.
Why Accounting & CPA Firms Need a Specialized IT Partner
Tax season doesn’t wait for IT problems to get resolved, and a breach involving client tax data isn’t just a technical incident, it’s a professional liability and trust issue. CPA firms sit on some of the most sensitive personal financial data that exists, from SSNs to full financial histories, which makes them a specific and repeated target for cybercriminals.
A generalist MSP treats every client the same. A firm handling taxpayer data during a six-week filing crunch needs a partner that understands the actual stakes of an outage on April 10th versus a random Tuesday in June.
EXCELLENT Based on 43 reviews Posted on Google Mike KolbTrustindex verifies that the original source of the review is Google. Working with David at XPU was a real blessing today. Been struggling to get an API connected for some applications we use and he was the ultimate professional. Highly recommend this team for all of your businesses IT needs!Posted on Google Susan OlivasTrustindex verifies that the original source of the review is Google. I'm incredibly grateful for our IT support team - specifically Aaron and Dhennis! Anytime I have a computer issue - big or small - they respond right away and always get it resolved quickly and efficiently. For example, I work between two properties and couldn't access a share drive I needed to finish a project that morning. I know IT support can get very busy supporting many of our offices; however, Aaron jumped right in, diagnosed the issue, and had everything up and running in no time. Another example is when Dhennis took the time to work on an ongoing Comcast issue with me. He stayed on the phone with Comcast several times and worked with the rep to troubleshoot the issue we were having. I highly recommend them because they consistently provide lightning fast response times, clear communication, and effective solutions. Their professionalism and reliability give our office(s) total peace of mind, knowing our systems are always in good hands. Many thanks!Posted on Google BirgitTrustindex verifies that the original source of the review is Google. The Xperts Unlimited team has been a tremendous support to our entire company for years. Aaron & Dhennis are both professional, knowledgeable, kind and extremely patient. They respond to requests quickly, are committed to seeing a problem through to the end, demonstrate great attitude and a genuine desire to help regardless of the type of problem. I can always count on Aaron and Dhennis and feel fortunate to have them on our support team. Thank you!Posted on Google Juliana FinbergTrustindex verifies that the original source of the review is Google. Xperts Unlimited has been an absolute pleasure to work with. Their team is knowledgeable, responsive, and truly goes above and beyond to make sure everything runs smoothly. A special shout‑out to Dhennis and Aaron—they are outstanding, always quick to help, and great at explaining things in a clear, easy-to-understand way. Highly recommend Xperts Unlimited to anyone looking for reliable, top‑notch IT support!Posted on Google Erin CutlerTrustindex verifies that the original source of the review is Google. Xperts Unlimited has been invaluable for my company. They regularly assist us with anything we run into - migrating systems from one platform to another, onboarding and off-boarding staff, helping with google and gmail issues, hardware issues and resets, and more. The team is very responsive and always amiable and helpful. I would recommend Xperts Unlimited to anyone looking for a top notch IT company.Posted on Google Jorge LopezTrustindex verifies that the original source of the review is Google. ry Positive Communication was outstanding. The team was highly responsive, proactive, and always available when needed, Dhennis and Aaron have been a joy to work withPosted on Google yahir GamezTrustindex verifies that the original source of the review is Google. Xperts Unlimited has been our company’s IT provider since I joined nearly two years ago, and Aaron and Dhennis have consistently gone above and beyond in providing support whenever needed, no matter the time of day. Their professionalism and responsiveness have been exceptional, and I would highly recommend them.Posted on Google Corinne RuckleTrustindex verifies that the original source of the review is Google. Aaron & Dhennis are always professional and there to assist with any needs that may come up.Posted on Google Private PrivateTrustindex verifies that the original source of the review is Google. Aaron and Dhennis are so great to work with! I always receive fast responses, great communication and they can always find a solution to any of the problems I find or sometimes accidentally create. They always have a great attitude and go above and beyond to provide a positive experience. Thank you Aaron and Dhennis!!!Posted on Google Darlene McKinneyTrustindex verifies that the original source of the review is Google. I truly enjoy working with Dhennis and Aaron from Xperts Unlimited. They are consistently friendly, patient, and incredibly supportive—even on days when my questions might fall into the “I probably should’ve known that” category. While I can usually troubleshoot a few things on my own, on those extra challenging, head-scratching days, I know I can reach out and they’ll be ready to help without hesitation (and without judgment!). What really stands out is their professionalism, paired with a great sense of humor—they somehow manage to keep things light and positive, even toward the end of a long day. It definitely makes the whole support experience a lot less stressful and a lot more enjoyable.Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Compliance & Regulatory Framework
The IRS and FTC don’t just recommend safeguarding taxpayer data, they require it, and the burden of proof sits with your firm. Whether you’re meeting IRS Safeguards Rule expectations or FTC data protection standards, the standard is the same: you need documented, working controls, not just good intentions.
We help you build the documentation and controls your regulators and clients expect, not scramble to produce them during an audit or after an incident.
"Are we a target for phishing and business email compromise?"
Yes, accounting firms are specifically and repeatedly targeted because criminals know you handle tax documents and financial transfers. We implement email authentication and staff training built around the exact BEC tactics targeting CPA firms, not generic phishing awareness.
"Can our systems handle the tax season crunch without breaking?"
Downtime during filing season isn't an inconvenience, it's a missed deadline with client consequences. We build monitoring and support specifically around your firm's highest-stakes weeks, not a one-size-fits-all support model.
"Can our staff and partners securely access tax software and client portals remotely?"
Similar to other modern businesses, CPA firms operate remotely and hybrid, and their staff need secure access to tax prep software, document management systems, and client portals from home, the office, or client sites. We design remote access that doesn't sacrifice security for convenience.
"Are we meeting IRS and FTC data protection requirements?"
See compliance section above, but this is a common area where firms discover gaps only when it's too late to fix them quietly.
"Can our IT handle the specialized software we run?"
Tax prep platforms, bookkeeping systems, document management tools, and secure file-sharing portals all have different requirements and quirks. We manage these as a coordinated environment, not a pile of disconnected tools.
Common Pain Points
What We Provide for Accounting & CPA Firms
Proactive Managed IT Services
Monitoring and maintenance that prevents issues before they become filing-season emergencies
Advanced Cybersecurity Protection for Financial Data
Built around the specific threats targeting tax and accounting firms
Secure Backup & Disaster Recovery
Tested recovery, so you know your actual recovery time if disaster strikes mid-season
Strategic IT Leadership & Fractional CIO Support
Planning technology investment around your firm’s growth and filing calendar
Human Support When It Matters Most
Real people, fast response, especially during the weeks when a delay is costly
Predictable Monthly Costs
Flat-rate pricing so firms can control expenses and avoid surprise IT bills
FAQ
Do you understand the specific software CPA firms use (tax prep, document management, etc.)?
Yes, we manage the specialized platforms accounting firms rely on as a coordinated environment, not generic IT support layered on top.
Do you help with IRS Safeguards Rule or FTC compliance documentation?
Yes, we help build and maintain the documentation your firm needs to demonstrate compliance.
Can you support firms with hybrid or remote staff during and after filing season?
Yes, we design secure remote access for staff and partners working from multiple locations.