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Welcome to Tilli Accounting Services

Tilli Accounting Services (TAS) is committed to every client equally.  We will provide accurate and professional accounting & finance services to for profit and nonprofit business entities by continuing to learn and meet the individual needs of our clients while protecting the confidentiality of the clients' business matters. We are here to help our clients understand their financial situation so that they can see where they are and arrive at where they want to go.  We will serve as a resource and provide concise and accurate information in the most efficient, effective and timely manner.  We promise to be loyal to the client and work in their best interest. 
As we strive to achieve this mission, TAS will:​​

     • Adhere to the highest professional and ethical standards in all matters;​

     • Exercise honesty, diligence and objectivity in all matters;​​

     • Promote efficiency and effectiveness of operations;​

     • Safeguard the integrity of confidential or proprietary information entrusted to us​;​

     • Treat everyone with courtesy, respect, and understanding​;​

     • Encourage our employees to grow in knowledge and experience;​

     • Use technology and knowledge to constantly improve the quality of our work​;​

     • Provide conscientious, innovative problem solving by applying a unique blend of analytical thinking, abstract reasoning and creative intuition;​

     • Pay attention to detail and evaluate all sides of every issue;​

     • Earn client confidence and trust by conducting business with integrity and fairness.

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About Us

Accounting and Finance Consultants You Can Trust

More than 25 years ago TAS began offering freelance bookkeeping services to for profit companies. It has been because of the continual change in client needs throughout the years that caused the expansion of services being offered to help ensure the clients maximize their profits and succeed in their marketplace.​​ With these changes came a shift in their primary clientele to serving nonprofit organizations and Black-owned businesses almost 15 years ago.

Our mission is to make a positive difference in the operations of business entities through one-on-one relationships with the Executive team.


Our goal is not to simply solve issues, but to help businesses run more efficiently, lower operating costs and become more profitable.​

Our perspective is to create solutions that are practical, while aligning with the business vision and mission statement.​​


We have been providing business consulting services since 1993 to clients in the following areas:


Auto Rental Revenue Management Technology​

City Government​​


Employment Staffing


Equestrian Partnerships


Graphic Design

Home Lending


Information Technology



Medical Facilities

Non Profit

Notary Services

Personal Training


Property Management

Public Accountancy

Real Estate



Staffing Agency











North Carolina​




Czech Republic Koruny (CZK)​​​

European Union Euro (EUR)

Russian Rubles (RUR)

United Kingdom Pounds (GBP)

United States Dollars (USD)

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Services Provided:


TAS provides reliable, accurate, well-organized and affordable bookkeeping and accounting services customized around the client’s needs. Well-organized financial records are the foundation of a successful business; they ensure that your operations will run more proficiently on a day-to-day basis.

Accounting/Bookkeeping services include:

  • Accounts Payable – entering bills, printing checks, aging analysis

  • Accounts Receivable – invoicing customers, posting customer payments, aging analysis

  • Balance Sheet Account Reconciliation

  • Chart of Accounts/General Ledger (setup and maintenance)

  • Data Entry

  • Expense and Class coding

  • Financial Statement generation

  • Payroll Processing

  • Prepaid and Accrued Expenses

  • Time Tracking & Job Cost Reporting

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TAS provides business entities interested in solid, sustainable growth with expertise and leadership in the accounting, finance and human resource functions. We act as an external part-time CFO/Controller providing our clients with the tools, systems and support necessary to build more profitable and valuable businesses. Our involvement gives the client better management control, more knowledge and understanding of the business operations.

CFO/Controller services include:  

  • Assist in preparing required management documents and maintain strong communication with independent auditors

  • Attend staff meetings, financial reporting meetings and serve as board advisory

  • Budgeting, Cash Management /Analysis and Forecasting

  • Develop internal control and segregation of duties

  • Financial Statement and custom reporting packages

  • Manage in-house accounting and administrative department

  • Oversee the financial reporting cycle and month/year-end close

  • Review of insurance policies

  • Sounding board for executive leadership and department heads

  • Update process and procedure manuals

Discussing the Numbers


Management consulting indicates to both the industry and practice of helping businesses improve their performance, primarily through the analysis of existing problems and development of plans for improvement.  Businesses hire the services of management consultants for a number of reasons, including gaining external (and presumably objective) advice, access to the consultants' specialized expertise, or simply as extra temporary help during a one-time project, where the hiring of more permanent employees is not required.

Consultants may also provide organizational change, management assistance, development of coaching skills, technology implementation, strategy development, or operational improvement services.  Management consultants generally bring their own, proprietary methodologies or frameworks to guide the identification of problems, and to serve as the basis for recommendations for more effective or efficient ways of performing business tasks.

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ADDITIONAL SERVICES available include, but are not limited to, the following:

  • 1096/1099 Preparation

  • Advisory Services

  • Assess, develop, and implement accounting software

  • Coaching and mentorship

  • Depreciation and Amortization Schedules

  • Fixed Asset Management

  • Grant Management

  • Human Resource Services

  • Internal Audit Process

  • Inventory Management

  • Policy and Procedure Documentation

  • QuickBooks Pro Advisor

  • Sales & Use Tax Filing

  • Seminars & Training

  • Strategic Planning

  • Tax and Audit Support

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David J. Moceri, CPA

"I have worked with Tilli Accounting Services for over 6 years now. Aside from finding TAS thorough, one other word comes to mind:  Service.  This term paints a broad stroke and is bantered about, but what it means to me and my experience with TAS:

TAS stands in the shoes of the client and asks – What is important to them?  Why did they come to us/me?   If they were the client what would they want to see done?  And then they will take it further.  TAS fosters constant and consistent communication with their clients, partners and stakeholders which allows them to provide consistent service, constantly."


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Get in Touch

We'd love to hear from you.

PO Box 4392 Orange, CA 92863

714 474-6523

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