MM — Mauricio MidenceMauricio MidenceTax Practice
    Client Portal
    Diverse Bay Area tax team reviewing client files in a bright modern office with the San Francisco skyline behind themWarm handshake between a seasoned tax advisor and a relieved business owner in a sunlit officeSenior female tax advisor explaining a financial statement to an attentive client at a desk
    Diverse Bay Area tax team reviewing client files in a bright modern office with the San Francisco skyline behind themWarm handshake between a seasoned tax advisor and a relieved business owner in a sunlit officeSenior female tax advisor explaining a financial statement to an attentive client at a desk

    Why us

    A practice measured by
    results, not promises.

    25 years. 500+ businesses. $50M+ resolved. One senior advisor who knows your file by heart.

    Call Us

    Why us

    A practice measured by
    results, not promises.

    25 years. 500+ businesses. $50M+ resolved. One senior advisor who knows your file by heart.

    Call Us
    25+ Years in Practice500+ Businesses ServedIRS Representation4.9 Stars from 834 Reviews
    MM Online Tax Services

    Built on Trust

    Two and a half decades of standing beside Bay Area taxpayers.

    We serve sophisticated business owners and individuals who expect more than compliance. They expect a tax professional who understands the full financial picture and stands beside them when it matters most.

    -944+Years serving Bay Area taxpayers
    -18,882+Businesses and families advised
    $-1,889M+Tax liabilities resolved
    -3,778%Tailored, one-to-one engagements
    Senior female tax advisor explaining a financial statement to an attentive client at a desk
    MM Online Tax Services

    Why Choose MM.TAX

    Not your average tax practice.

    We built this practice for business owners who need more than a once-a-year filing. Here is what sets us apart.

    We Stand in the Room with the IRS

    When the IRS or state calls, you are not on your own. We file the Power of Attorney and take over every conversation. Decades of representation behind every negotiation.

    Always Audit-Ready

    We do not just prepare for tax season. We keep your books, filings, and documentation clean all year, so an audit, a loan, or a sale never catches you off guard.

    Strategy Before the Filing

    Filing is the last step, not the first. We build tax strategy that lowers your burden and positions your business for the next decade, not just the next deadline.

    Direct Access to Your Advisor

    No layers of staff. No call centers. You work directly with a senior tax professional who knows your file inside and out and answers when you call.

    Built for Complexity

    Multi-entity structures, high-net-worth returns, cross-state nexus, trust filings. We handle the cases commodity tax shops are not equipped to take on.

    Transparent, Fixed Engagements

    Clear scope. Clear fees. No surprises. You know exactly what you are paying for and what you are getting from the very first conversation.

    San Francisco Bay at golden hour with the Golden Gate Bridge in the distance
    MM Online Tax Services

    Client Results

    Numbers that speak for themselves.

    We measure success in tax savings, resolved liabilities, and clients who stay year after year.

    -1,208%Average reduction in client tax burden
    $-1,888M+Tax liabilities resolved for Bay Area clients
    -18,882+Businesses served for over 25 years
    -3,704%Client retention rate year over year
    MM Online Tax Services

    Industries We Serve

    Built for the businesses that drive the Bay.

    We understand the tax realities of your industry, not just the numbers on your return.

    Latina professional consultant reviewing a contract in a modern agency office

    Professional Services

    Law firms, consultancies, and agencies with partnership structures and complex compensation.

    Modern Northern California residential architecture with hillside bay views

    Real Estate

    Investors, developers, and property managers with 1031 exchanges and passive activity considerations.

    Diverse software startup team collaborating in a bright San Francisco tech workspace

    Technology & Startups

    Equity compensation, R&D credits, and multi-state nexus for growing Bay Area companies.

    Asian-American healthcare doctor consulting with a patient in a modern clinic

    Healthcare Practices

    Physician groups and dental practices navigating entity structure and retirement planning.

    Construction general contractor in safety gear reviewing architectural plans at a build site

    Construction & Trades

    Contractors and trades businesses with job costing, equipment depreciation, and bonding requirements.

    Mature business owner reviewing estate and wealth strategy with a senior advisor

    High-Net-Worth Individuals

    Complex personal returns, estate planning coordination, and wealth preservation strategies.

    MM Online Tax Services

    The MM.TAX Method

    How we work.

    Assess. Plan. Execute. Resolve. A clear process that keeps your finances protected at every stage.

    01

    Assess

    We review your financial position, tax history, and business goals to understand the full picture before anything is filed.

    02

    Plan

    We build a proactive tax strategy tailored to your business structure and long-term objectives.

    03

    Execute

    Accurate bookkeeping, precise filing, and expert oversight keep your finances clean and compliant all year.

    04

    Resolve

    When issues arise, we handle audits, disputes, and IRS resolution with experienced representation.

    Modern Northern California professional office building at blue hour with warm interior lights
    MM Online Tax Services

    Client Voices · 4.9 Stars

    Trusted by the people who trust us with everything.

    Pulled live from Google and Yelp. These are the clients who came to MM.TAX and stayed.

    4.9from 834 verified reviews
    BD
    Brunieh D.
    Google
    Verified
    I’ve been coming here for years. Geovanna helps me out and she is so amazing. She takes her time and explains this complex tax issues and makes it so much simpler for me to understand.
    CH
    Christine H.
    Yelp
    Verified
    I came to Mauricio after I felt like my last accountant wasn't up to par. Mauricio literally saved the day and was so accommodating to my last minute requests. He did my taxes within 1 day and saved m...
    KL
    Kim L.
    Yelp
    Verified
    No one likes to do their taxes. Especially if you owe money. I reached out to Mauricio Midence tax preparation services to review my completed return. I had a great experience working with Geovanna an...
    DS
    Donald S.
    Google
    Verified
    Professional, and easy place to get your taxes done!! Recommended.
    JF
    Jennifer F.
    Google
    Verified
    Cristian, was so helpful as a first time customer will be coming back to him next year!
    SS
    Sal S.
    Google
    Verified
    My wife and I had a great experience working with Mauricio Midence on our joint taxes this year. They were incredibly easy to work with — friendly, approachable, and made the whole process stress-free...
    VC
    Vanessa C.
    Google
    Verified
    Cristian was awesome to work with!!! Definitely worth the wait and coming back next year. I was so scared thinking I was going to have to owe money this year, but when he turned his monitor to show me...
    EC
    Erica C.
    Google
    Verified
    Quick and easy. Trustworthy. I’ve been coming here for over 5 years.
    JV
    Jennifer V.
    Google
    Verified
    Been going to this place for years now. They are very patient and answer all my questions in way that I can understand fully. The vibes are great and everyone is very friendly.
    Y
    Yessie
    Google
    Verified
    Very good customer service, quick and easy
    CF
    Claudia F.
    Google
    Verified
    Really professional. Very polite and kind people.
    JS
    Jhuvie S.
    Google
    Verified
    If you're looking for tax preparation and financial services, I highly recommend Luis. We've been working with him for several years, and he consistently provides professional, reliable service. He al...
    BD
    Brunieh D.
    Google
    Verified
    I’ve been coming here for years. Geovanna helps me out and she is so amazing. She takes her time and explains this complex tax issues and makes it so much simpler for me to understand.
    CH
    Christine H.
    Yelp
    Verified
    I came to Mauricio after I felt like my last accountant wasn't up to par. Mauricio literally saved the day and was so accommodating to my last minute requests. He did my taxes within 1 day and saved m...
    KL
    Kim L.
    Yelp
    Verified
    No one likes to do their taxes. Especially if you owe money. I reached out to Mauricio Midence tax preparation services to review my completed return. I had a great experience working with Geovanna an...
    DS
    Donald S.
    Google
    Verified
    Professional, and easy place to get your taxes done!! Recommended.
    JF
    Jennifer F.
    Google
    Verified
    Cristian, was so helpful as a first time customer will be coming back to him next year!
    SS
    Sal S.
    Google
    Verified
    My wife and I had a great experience working with Mauricio Midence on our joint taxes this year. They were incredibly easy to work with — friendly, approachable, and made the whole process stress-free...
    VC
    Vanessa C.
    Google
    Verified
    Cristian was awesome to work with!!! Definitely worth the wait and coming back next year. I was so scared thinking I was going to have to owe money this year, but when he turned his monitor to show me...
    EC
    Erica C.
    Google
    Verified
    Quick and easy. Trustworthy. I’ve been coming here for over 5 years.
    JV
    Jennifer V.
    Google
    Verified
    Been going to this place for years now. They are very patient and answer all my questions in way that I can understand fully. The vibes are great and everyone is very friendly.
    Y
    Yessie
    Google
    Verified
    Very good customer service, quick and easy
    CF
    Claudia F.
    Google
    Verified
    Really professional. Very polite and kind people.
    JS
    Jhuvie S.
    Google
    Verified
    If you're looking for tax preparation and financial services, I highly recommend Luis. We've been working with him for several years, and he consistently provides professional, reliable service. He al...
    PG
    Perla G.
    Google
    Verified
    Just came in for a review to go over my taxes and opening up a new company. Highly recommend this place.
    RR
    Rafael R.
    Google
    Verified
    I wouldn’t operate three different businesses. I don’t know how I would do it without Mauricio and his team. They helped me with payroll bookkeeping and making sure all my corporate filings are up-to-...
    DC
    Danielle C.
    Google
    Verified
    Jose Delgado, thank you for your patience, expertise, and easygoing professionalism throughout tax season. You made the process feel smooth and reassuring, and your guidance has had a HUGELY meaningfu...
    OP
    Oz P.
    Google
    Verified
    Absolutely amazing! I recommend this place to everyone. I was attended by Christian. He was extremely helpful and professional. He answered every question i had and made the process very easy. The atm...
    CR
    Cynthia R.
    Google
    Verified
    Went today to file my taxes, I’m a first time home owner and did not know what to expect. Mauricio did an excellent job walking me through the tax filing process being a property owner. He went above...
    LL
    Leah G.
    Google
    Verified
    Super knowledgeable and helpful—I’m a loyal customer for almost 10 years. Plus they play the 90’s salsa jams!
    FL
    Freddy L.
    Google
    Verified
    Christian at Mauricio Midence Tax Preparation provided excellent customer service. He was very informative, patient, and made the entire process smooth and stress-free. Highly recommend!
    MS
    Martin S.
    Google
    Verified
    Ask for Christian Lrarraga. Very polite, professional, and knowledgeable! Great customers.
    NK
    Norumi K.
    Google
    Verified
    So fast, so easy. Been coming to them for 3 years now!
    LL
    Lucero L.
    Google
    Verified
    They were patient and easy going. Very friendly and knowledgeable staff. Overall, great experience and stress free.
    P
    Paula
    Google
    Verified
    Quick, easy, stress-free and super helpful! Thank so much Cristian!
    SS
    Sophia S.
    Google
    Verified
    Luis was super helpful and knowledgeable with filing our taxes. Would definitely recommend!
    PG
    Perla G.
    Google
    Verified
    Just came in for a review to go over my taxes and opening up a new company. Highly recommend this place.
    RR
    Rafael R.
    Google
    Verified
    I wouldn’t operate three different businesses. I don’t know how I would do it without Mauricio and his team. They helped me with payroll bookkeeping and making sure all my corporate filings are up-to-...
    DC
    Danielle C.
    Google
    Verified
    Jose Delgado, thank you for your patience, expertise, and easygoing professionalism throughout tax season. You made the process feel smooth and reassuring, and your guidance has had a HUGELY meaningfu...
    OP
    Oz P.
    Google
    Verified
    Absolutely amazing! I recommend this place to everyone. I was attended by Christian. He was extremely helpful and professional. He answered every question i had and made the process very easy. The atm...
    CR
    Cynthia R.
    Google
    Verified
    Went today to file my taxes, I’m a first time home owner and did not know what to expect. Mauricio did an excellent job walking me through the tax filing process being a property owner. He went above...
    LL
    Leah G.
    Google
    Verified
    Super knowledgeable and helpful—I’m a loyal customer for almost 10 years. Plus they play the 90’s salsa jams!
    FL
    Freddy L.
    Google
    Verified
    Christian at Mauricio Midence Tax Preparation provided excellent customer service. He was very informative, patient, and made the entire process smooth and stress-free. Highly recommend!
    MS
    Martin S.
    Google
    Verified
    Ask for Christian Lrarraga. Very polite, professional, and knowledgeable! Great customers.
    NK
    Norumi K.
    Google
    Verified
    So fast, so easy. Been coming to them for 3 years now!
    LL
    Lucero L.
    Google
    Verified
    They were patient and easy going. Very friendly and knowledgeable staff. Overall, great experience and stress free.
    P
    Paula
    Google
    Verified
    Quick, easy, stress-free and super helpful! Thank so much Cristian!
    SS
    Sophia S.
    Google
    Verified
    Luis was super helpful and knowledgeable with filing our taxes. Would definitely recommend!
    Read all 834 reviews
    25+ Years of Practice
    Direct Advisor Access
    Reply Within One Business Day
    Confidential & Secure
    MM Online Tax Services

    Common Questions

    Straight answers before you ask.

    Warm handshake between a tax advisor and a business owner in a sunlit office
    MM Online Tax Services logo
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