4.9834 reviewsNow serving all of California
Measured byresults, notpromises.
25+ years, 500+ businesses, $12M+ in IRS debt negotiated, and a senior advisor who knows your file.
- “Best tax preparation service I have used. Mauricio really takes care of his clients.”Juan M.
- “Mauricio literally saved the day and was so accommodating to my last minute requests.”Christine H.
- “I don't know how I would do it without Mauricio and his team.”Rafael R.
- “Alondra is amazing! She took the time to explain everything to me in detail.”Valerie M.
- “Mauricio will educate you on how to save money on your taxes and do it RIGHT!”Chelsea J.
- “Thank you for your patience, expertise, and easygoing professionalism throughout tax season.”Danielle C.
- “Mauricio did an excellent job walking me through the tax filing process being a property owner.”Cynthia R.
- “Mauricio, is amazing! Very knowledgeable & professional.”Ron B.
- “Mauricio and his team is the Best in the tax industry!”Marisol V.
- “Professional, and easy place to get your taxes done!! Recommended.”Donald S.
- “I cant express how happy I am with Mauricio and his team.”Peter F.
- “Both Christian and Mauricio were great.”Javier P.
- “Mauricio did an amazing job helping us with our taxes.”Theresa B.
- “Mari was so knowledgeable.”Teresa
- “Mauricio and Alondra were of great help!”Drew
- “Mauricio and his team are amazing.”Lizbeth P.
Why MM.TAX
Not your average tax practice.
Two and a half decades of standing beside California taxpayers, with the reviews to show for it.
We deal with the IRS so you don't
We file your power of attorney and take over IRS and state communication, from first notice to final resolution.
Audit-ready, all year
Books, filings, and documentation kept clean, so an audit, loan application, or sale isn't a fire drill.
Strategy before the filing
Filing is the last step. Planning during the year is where the savings come from.
A senior advisor on your file
One named professional who knows your history. Our online team answers the phone and connects you fast.
Built for complexity
Multi-entity structures, high-net-worth returns, cross-state nexus, and trust filings.
Flat fees from day one
Clear scope and price in writing before any work begins.
- years in practice
- 25+
- years in practice
- businesses and families advised
- 500+
- businesses and families advised
- in tax liabilities negotiated
- $12M+
- in tax liabilities negotiated
Client voices
Trusted by the people who trust us with everything.
Industries
Built for the businesses that drive California.
Professional services
Law firms, consultancies, and agencies with partner compensation and complex structures.
Real estate
Investors, developers, and property managers. 1031 exchanges and passive activity rules.
Technology and startups
Equity compensation, R&D credits, and multi-state nexus.
Healthcare practices
Physician groups and dental practices: entity structure and retirement plans.
Construction and trades
Job costing, equipment depreciation, and bonding requirements.
High-net-worth individuals
Complex personal returns, estate coordination, and wealth preservation.
Common questions.
Why choose MM.TAX over a bigger firm?
You get senior-level attention and one advisor who knows your file, without the layers and turnover of a large firm. And you get 25 years of Bay Area experience and an 834-review track record behind it.
What does it mean that MM.TAX is expert-led?
Your plan and your file are owned by a senior professional, not passed between junior staff. The owner, Mauricio Midence, is directly involved in the practice.
Do you serve clients outside the Bay Area?
Yes. Our online branch serves clients anywhere in California by phone, video, secure upload, and e-signature. Texas, Arizona, and Florida are coming soon.
How do you keep my information secure?
Documents move through a secure client portal, not email attachments. Access to your file is limited to the people working on it.
What happens on the first call?
We listen to what's going on, ask a few questions, and tell you plainly what we'd recommend and what it would cost. No pressure to sign anything.
Questions about your situation? Talk to the online team today.
Get started
Ready to work with a practice that stands by you?
A free 30-minute online consult with a senior advisor to map your path forward. No pressure.