DeMartini & Company Services

Overview

At DeMartini & Company, we believe great accounting is built on trust, expertise, and a commitment to personal service.
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Located in San Mateo, California, our full-service firm provides year-round support for individuals, families, and businesses seeking honest, reliable financial guidance. From everyday tax preparation to complex business planning and estate strategies, we help clients navigate each stage of life with clarity and confidence.

With decades of experience, we offer tailored solutions that reflect your goals—whether that means minimizing your tax liability, improving business operations, or preserving generational wealth. Our team is dedicated to helping you strengthen your financial future while delivering responsive, high-quality service that keeps our clients coming back.

What We Can Help With:

  • Keeping your taxes as low as legally allowed

  • Building wealth through strategic tax and financial planning

  • Designing accounting systems that streamline operations

  • Solving business challenges and boosting profitability

  • Protecting your estate and most valued assets

  • Maximizing savings opportunities tailored to your situation

Specialized Services:

  • Tax planning and preparation

  • Estate planning

  • Business valuations

  • Financial statements (compilation and review)

  • Personal financial planning

  • Litigation and marital dissolution support

  • Business consulting and entity structuring

  • Forecasts, budgets, and projections

We proudly serve a diverse client base across industries such as law, healthcare, construction, real estate, retail, and nonprofit. Whether you’re a small business owner, a professional, or managing a trust, our team offers the experience and discretion you can count on.

Pledge of Confidentiality
Your privacy is paramount. No matter who referred you to us, your business and tax information remains entirely confidential.

New Clients Welcome
Thinking about a change? Don’t wait until deadlines loom. Let us evaluate your current position and recommend smart steps to improve your long-term outcomes. Contact us at (650) 343-5900—we look forward to supporting your financial goals.