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Your Trusted CPA Partner in Los Angeles & Las Vegas
Allan Rosenthal & Associates has been dedicated to providing comprehensive accounting and financial services since our inception. With offices in Calabasas, Los Angeles, and Las Vegas, we combine personalized attention with advanced technological solutions to deliver cost-effective services tailored to diverse industries. Our team of certified professionals brings decades of experience in tax planning, business consulting, and accounting software implementation, ensuring clients receive actionable insights to optimize financial outcomes.

We prioritize client partnerships, offering free initial consultations and maintaining 14 layers of data security to protect sensitive information. Our commitment to excellence is reflected in our membership with the American Institute of Certified Public Accountants and California Society of CPAs.
Services
Tax Planning & Preparation Business Formation IRS Audit Representation QuickBooks Setup Financial Planning Internal Controls Review Business Valuations Litigation Support Not-For-Profit Accounting Executive Searches
Highlights and features
  • We offer free initial consultations to assess your accounting and tax needs.
  • Our fees are significantly lower than larger CPA firms without compromising quality.
  • We utilize advanced technology to ensure accurate, up-to-date financial reporting.
  • Our team includes CPAs with over 25 years of experience in diverse industries.
  • We provide 14 layers of data security to protect your sensitive financial information.
Associations and certifications
  • American Institute of Certified Public Accountants
  • California Society of CPAs
Services
Tax Planning & Preparation
Our tax planning and preparation services focus on minimizing liabilities while ensuring compliance with federal and state regulations. We provide year-end strategic planning, executive compensation structuring, and self-employment tax strategies tailored to individual and business needs. Clients benefit from proactive counsel to optimize financial outcomes.
QuickBooks Setup
We specialize in QuickBooks setup and implementation, ensuring accurate configuration of charts of accounts, payroll, and inventory systems. Our experts guide clients through software selection, data migration, and staff training to streamline accounting processes. This service supports long-term financial management efficiency.
IRS Audit Representation
Our firm provides expert IRS audit representation, including preparation for audits, appeals conferences, and penalty negotiations. We assist with technical tax issues and documentation to resolve deficiencies efficiently. This service ensures clients receive professional advocacy during tax authority interactions.
Business Valuations
We offer business valuation services for mergers, acquisitions, and liquidation scenarios. Our analysis includes due diligence and transition structuring to maximize profitability. Clients receive objective assessments to inform strategic decisions during business ownership changes.
Internal Controls Review
Our internal controls review identifies vulnerabilities in financial systems and recommends tailored solutions. We assist with SAS 70 reviews and control testing to safeguard assets. This service enhances operational efficiency and compliance for service organizations.
People
Allan Rosenthal
CPA
Allan Rosenthal, a licensed CPA in California and Nevada, has over 25 years of experience in accounting, tax planning, and business consulting. He specializes in QuickBooks implementation and has advised Fortune 500 companies and startups.
Questions
What accounting services do you specialize in?
We specialize in tax planning, QuickBooks setup, IRS audit representation, business valuations, and internal controls reviews for small to mid-sized businesses.
Do you offer QuickBooks training?
Yes, we provide on-site QuickBooks training tailored to your business needs, focusing on features relevant to your operations.
Are your fees competitive?
Our fees are designed to fit small business budgets and are often significantly lower than larger CPA firms.
What areas do you serve?
We serve clients in Los Angeles, Calabasas, Santa Monica, Las Vegas, Summerlin, and Henderson.
Do you offer a free consultation?
Yes, we provide a free initial consultation to assess your accounting, tax, and business needs.
How do you ensure data security?
Our client portal uses 14 layers of security to protect your financial data and maintain confidentiality.