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Trusted Tax Planning & Accounting Services in Costa Mesa
Kempton Accountancy is a tax planning firm founded by Mark Kempton, dedicated to helping business owners legally minimize tax liabilities while ensuring compliance. Our proprietary tax planning process combines personalized solutions with expertise in real estate, probate, and estate administration. With over 22 years of experience in accounting and auditing, Mark brings a deep understanding of financial institutions and regulatory compliance. We prioritize client education, transparency, and proactive strategies to optimize financial outcomes.

Our services extend to bookkeeping, tax preparation, and business consulting, tailored to meet the unique needs of each client. We serve businesses across Costa Mesa, Newport Beach, Huntington Beach, Irvine, Santa Ana, Tustin, and surrounding areas. Our commitment to excellence is reflected in our client testimonials, highlighting our ability to deliver measurable financial benefits and exceptional service.
Services
Tax Planning Tax Preparation Bookkeeping Business Consulting Probate & Estate Administration
Highlights and features
  • 22+ years of experience in accounting and auditing with expertise in financial institutions.
  • Proprietary tax planning process to legally minimize tax liabilities.
  • Personalized service tailored to unique business and individual needs.
  • Proven track record in real estate tax planning and compliance.
  • Commitment to client education and transparent financial strategies.
Associations and certifications
  • QuickBooks ProAdvisor
  • CTEC Registered Tax Preparer
What people say
Expertise and experience Personalized service Effective tax solutions Proactive approach Highly recommend
Services
Tax Planning
Our tax planning services focus on minimizing liabilities through customized strategies. We analyze financial situations to implement deductions, credits, and compliance measures. Clients benefit from proactive planning aligned with long-term business goals.
Tax Preparation
Accurate and timely tax preparation ensures compliance and maximizes refunds. We handle individual and business returns with attention to detail, leveraging deductions and credits. Audit representation is also provided for added security.
Bookkeeping
Maintain organized financial records with our bookkeeping services. We ensure accuracy in transactions, payroll, and reporting. Real-time cloud-based tools provide transparency and support informed business decisions.
Business Consulting
Strategic consulting services drive business growth through financial analysis and planning. We assist with cash flow management, operational efficiency, and market-specific strategies tailored to Orange County's economic landscape.
Probate & Estate Administration
Specialized probate and estate services ensure smooth asset transitions. We guide clients through legal compliance, tax implications, and efficient estate management to protect their legacies.
People
Mark Kempton
Founder & Tax Expert
Mark Kempton, founder of Kempton Accountancy, holds a BBA in Accounting and Finance. With 22 years as a KPMG partner, he specializes in tax planning, real estate, and compliance. A QuickBooks ProAdvisor and CTEC-registered preparer, Mark combines expertise with community service, honored by Operation Project HOPE.
Questions
What services does Kempton Accountancy offer?
We provide tax planning, preparation, bookkeeping, business consulting, and probate/estate administration services tailored to individual and business needs.
How does Kempton Accountancy differ from other firms?
Our proprietary tax planning process, personalized service, and expertise in real estate and compliance set us apart, ensuring clients pay the least tax legally allowed.
What pricing plans are available?
Individual tax returns start at $800; business returns range from $1,200–$1,800, with transparent pricing based on complexity and client needs.
How do you ensure tax accuracy and compliance?
Our team stays updated on tax laws, uses advanced software, and conducts thorough reviews to guarantee accurate filings and minimize audit risks.
Can you assist with bookkeeping and accounting?
Yes, we offer cloud-based bookkeeping and accounting services for real-time financial insights, payroll management, and operational efficiency.
How can I schedule a consultation?
Contact us via our website or email to book a free strategy session and discuss your tax or accounting needs.