Caster CPAs Inc.

Caster CPAs Inc.
131 Airport Road
Warwick, RI 02889


The Certified Public Accounting firm of Caster CPAs Inc. was established in 2002.   Our offices are located at 131 Airport Road in Warwick Rhode Island.  We are a full service accounting and taxation firm that takes pride in our technical expertise and our dedication to quality service.

Whether you are looking to have your company's accounting or taxes prepared, an audit of your company's records or 401(k) plan, forensic accounting, business valuation or management advisory services, you've come to the right place.  Margaret Caster, who has over 25 years of accounting and taxation experience, manages the offices of Caster CPAs Inc.

Our client base is vast.  We cater to businesses of many types, from professional services to chain retailers, from personal service salons to 401(k) plan audits, as well as trusts and estates.  Some of our clients have been in business for many years and other clients have start up businesses.  All clients are given the same high level of precision accounting, taxation, forensic, valuation and audit work.


Tax Return Preparation for:







Gift Taxes

Not for Profit filing

Tax Planning for:




Gift Taxes

We are Experts in Taxation!

Our highly trained, experienced staff provides up-to-date tax planning and tax preparation.

Auditing and Accounting


Most often, financial statement audits are required by financial institutions, regulatory agencies or another outside party.  

Our company provides value added service making the audit process beneficial to both your company and the party requesting the audit.


Audits of 401(k) Plans

We are experts in audits of 401(k) plans.


Our accounting services include:

Monthly, quarterly and annual financial statement preparation.

Compilations and Reviews of Financial Statements.

Set up and analysis of cost accounting systems.

Analysis of accounting system policies and procedures.

Special use compliance reviews.

Management Advisory Services

Forensic Accounting

Our forensic accounting services combine accounting principles with investigative techniques to assess whether there is reason for concern about a company's financial records or statements.

Those findings are used in legal proceedings concerning fraud, embezzlement and financial disputes.

Business Valuation Service

Business valuation is the process of determining the economic value of a business.  Our business valuation services provide a fair value of a business.

Some of the reasons clients request our business valuation services include the sale of a business, establishing partner ownership or divorce proceeding.

Internal Controls

Our internal control services include:

Internal Control Evaluations

Forecast and budgeting projections

Ratio and trend analysis

Cash Flow Budgeting

Business Plan Succession

Profit improvement Planning

Quickbooks Bookkeeping

The most  important service accountants can provide for their clients is reliable financial information.  Information about sales, expenses, accounts receivable and accounts payable are vital to those who want to effectively manage their businesses.

Our bookkeeping services provide a valuable service for our client who prefer to devote their time and efforts to their client needs.  Our staff works behind the scenes to ensure that our clients' bookkeeping is prepared correctly and done so in a timely manner.

Do you need help setting up or using QuickBooks?  Would you like personalized QuickBooks training?  Our staff can assist you with all of your QuickBooks needs.

About Us

Margaret A Caster


Mrs. Caster graduated from the University of Rhode Island with a Bachelor of Science in Accounting and a Master of Science in Accounting (MSA).  

Margaret is a Certified Public Accountant (CPA) holding specialized American Institute of Certified Public Accountant (AICPA) designations as a Certified Financial Forensic (CFF), a Personal Financial Specialist (PFS) and a Chartered Global Management Adviser (CGMA).

Margaret has a wide-range of taxation, auditing, accounting and management advisory experience.  She is knowledgeable in accounting and taxation for entities of various sizes and complexities; including taxation of corporations, partnerships, individuals, trusts, estates and not for profit entities.

Margaret has extensive experience in financial statement audits and audits of 401(k) plans.

Margaret is a Certified Fraud Examiner (CFE) and a Certified Valuation Analyst (CVA).  She is a member of the AICPA, the Association of Certified Fraud Examiners, the Rhode Island Chapter of Certified Fraud Examiners and the National Association of Certified Valuation Analysts.

Margaret is a Register Investment Adviser (RIA) licensed with the Financial Industry Regulatory Authority (FINRA).

Formerly with a big four accounting firm, Margaret is a member of the AICPA and the Rhode Island Society of CPAs (RISPA).

Margaret and her staff provide the high quality of service that you and your business deserve.

Join Our Team

At Caster CPAs Inc., we provide a fast-paced, productive working environment for the highly motivated individual.  Our dedicated team of accounting and taxation professional enjoy the challenges of public accounting for a multitude of clients across a wide range of industries.  Our technology is up to date and state of the art.

We seek high level achievers who have worked in the field of accounting and taxation, as well as individuals who are new to the industry.  Our team looks for those individuals who possess strong skills in leadership, teamwork, and communication skills.  Individuals must demonstrate  their dedication to providing clients with exceptional customer service.

Our office is comfortable and pleasant to work in.  We are centrally located in Warwick RI at 131 Airport Road.  If you are interested in pursuing a career with our firm, please contact

Contact Us

Get in Touch

Caster CPAs Inc.

131 Airport Road, Warwick, RI 02889, US

(401) 737-1099


Monday - Friday: 9am - 5pm

Weeknight evenings - during tax season

Saturday:During tax season 9am - 2pm

Sunday: Closed

Call to schedule an appointment