Full-service tax and accounting since 1988.
Founded in 1988 by Ken Watter, our firm serves the DC-Maryland area and clients nationwide with a reputation for excellence.
4.6 on Google · 4.4 on Yelp · 37 reviews
Welcome to Watter CPA
Kenneth J. Watter, CPA, P.A. is the dependable accounting and advisory partner you've been looking for. Since 1988, we've served clients from every corner of industry right here in Rockville — a firm known for real-world results: top-notch tax help, accurate bookkeeping, and sharp consulting, all tuned to the unique shape of each client's business.
Ken Watter, the man behind the firm, left us on December 4, 2023. A standout CPA and a pillar of the Montgomery County community, his push for excellence and his support for clients set a standard that still shapes every service we deliver.
Now we're guided by George Dimov, CPA, who steers the firm with the same commitment to quality Ken instilled. When you reach out, you get more than a service — you get a partnership that adapts to your evolving needs.
Our Services
Advisory Services for Businesses
Strategic tax, accounting, and business advisory from licensed CPAs at Watter CPA. Year-round guidance for owners, families, and growing companies.
Learn moreCPA Services
Tax preparation, planning, and advisory for individuals, retirees, and business owners. CPA-reviewed returns from Watter CPA. Free 30-min initial session.
Learn moreTax Services for Businesses & Individuals
Professional tax services for individuals, retirees, and business owners in Maryland and Washington. CPA-reviewed returns. Free 30-min initial session.
Learn moreFinancial Statement Audits
Independent financial statement audits for private companies, nonprofits, and lender-required filings. Watter CPA delivers GAAP-compliant assurance work.
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We bring a unique blend of expertise, experience, and innovation to our advanced engagements to meet the evolving needs of businesses and industries. We are peer-reviewed with clients in all 50 states for reliable, detailed, and quick audits.
Stay compliant and gain credibility with our expert auditing services.
- 50States Served
We're peer-reviewed with clients in all 50 states.
- 14+Years of Experience
Average years of audit & taxation experience per staff member.
- 12Managing Auditors
Striving for customer satisfaction is our top priority.

The Journey of Innovation at Watter CPA
We have more than 16 years of experience auditing financial statements in varied industries, including technology, buy & sell-side finance, biotech, retail, e-commerce, digital assets, real estate, manufacturing, and logistics accounting.
Our firm offers financial statement audit services to businesses of all sizes and industries. We work closely with each client to tailor our approach to their unique needs, ensuring our audits are efficient, effective, and compliant with regulatory standards.
Our audit firm has a global reach, focused on expert audit services for businesses operating across multiple jurisdictions. Our experienced professionals bring deep knowledge of international accounting and auditing standards to ensure compliance with local regulations and industry best practices.
Additional Services
Beyond our core work, Watter CPA supports clients across tax, accounting, audit, and planning — all under one roof in Rockville.
Tax Preparation & Advisory
Bookkeeping, Payroll & Reporting
International & Offshore
Estate, Trust & Planning
What our clients say
I needed an IRS Form 1041 to be completed for my mother's estate, but I was only one week from the fiscal year deadline of August 15, due to family demands. Having found this responsive company, after being put off by many firms who told me a consultation would be days away, I was pleased at the prompt and clear email communication. I then received a prompt follow-up call from Salvatore Sotelo, who spent time answering my questions, with courtesy and patience. I was so relieved to be sent verification of IRS having accepted the forms. In this company, I found professionalism, personal courtesy, efficiency and good natured individuals along the way. I cannot recommend Watter CPA high enough!
My wife and I used to do our Federal and State Tax Returns by ourselves, but when they started to get too complicated we thought there had to be a better solution. About seven years ago, we found the firm of Kenneth J. Watter, CPA. Since then, we no longer had to struggle our way through the confusing tax codes. We provided Ken and Alice with the information and they prepared our tax returns and submitted them with no errors and on time. Every member of the office is willing to answer our questions. Ken, Alice and the office staff are the best and we highly recommend them to our family and friends.
I have been a client of Kenneth J. Watter, CPA, PA for fifteen years. With the complicated nature of my returns, I can give them my information and they are able to explain my tax information in a way that I understand. The firm is courteous and professional no matter which accountant handles my return in any given year. Although this firm is an hour away from where I live, I highly recommend them for any taxpayer in the Maryland area.
Frequently Asked Questions
At Watter CPA, we believe that understanding your needs is the first step toward providing exceptional service. Determining the specific service required involves a thorough review of your financial situation, which is only possible with proper documentation and accurate data. This approach helps us deliver tailored solutions that best meet your needs and compliance requirements.
Below, you will find answers to some of the most frequently asked general questions. If you have more specific inquiries or require additional information, please feel free to Contact Us.
Contact Us01What types of tax planning services do you offer?
We offer a wide range of tax planning services, including individual and business tax planning, estate and trust planning and retirement planning. Our goal is to help you minimize your tax liability and ensure compliance with all relevant tax laws.
02How often should I meet with my CPA?
The frequency of meetings with your CPA depends on your specific needs and circumstances. For some clients, quarterly or annual meetings may be sufficient, while others may benefit from more frequent consultations, especially during major financial or business changes.
03Can you help with IRS issues or tax problems?
Yes, we provide comprehensive support for resolving IRS issues and tax problems. Our services include audit representation, negotiating payment plans, handling tax liens and levies and assisting with offers in compromise. We aim to help you navigate and resolve your tax issues efficiently.
04What is the process for starting a new business with your help?
Starting a new business with our help involves several key steps: 1. Initial consultation to understand your business idea and goals. 2. Assistance with business entity selection (e.g., LLC, corporation). 3. Guidance on registration and compliance with local, state and federal regulations. 4. Setting up accounting systems and procedures. 5. Ongoing support with bookkeeping, tax planning and financial reporting.
05Do you offer virtual consultations?
Yes, we offer virtual consultations to accommodate clients who prefer remote meetings. This allows us to provide our services regardless of your location, making it convenient and flexible for you to receive the support you need.
06How do you ensure the confidentiality and security of my financial information?
We take the confidentiality and security of your financial information very seriously. Our firm employs robust security measures, including secure data storage, encrypted communications and strict access controls. We are committed to maintaining your privacy and protecting your sensitive information.
07What should I do if I receive a tax notice from the IRS?
If you receive a tax notice from the IRS, it is important to contact us immediately. We will review the notice, explain its implications, and help you respond appropriately. Our team will work with you to resolve any issues and ensure compliance with IRS requirements.
08How do I get started with Watter CPA?
Getting started with Watter CPA is easy. Simply contact us to schedule an initial consultation. During this meeting, we will discuss your needs, explain our services and determine how we can best support you. From there, we will develop a customized plan to address your financial and accounting requirements.
09Do you electronically file my tax return or do I have to mail it in myself?
Yes, we e-file most tax returns. If a paper filing is required, we prepare it for certified mailing and ensure its delivery to the appropriate taxing authority.
10Do you prepare out-of-state tax returns?
Yes, we routinely prepare tax returns for all U.S. states and territories as well as necessary city or locality returns.
11Can you help with Cryptocurrency, Blockchain, or NFTs?
Yes, our tax professionals can evaluate your holdings and determine the most efficient and cost-effective way to report your assets.
12Can you file an extension for my tax return?
Yes, we file extensions for our clients. Note that filing an extension grants additional time for filing the tax return but does not extend the due date for any taxes owed.
13What documents do I need to bring to do my taxes?
Common documents needed include: - W-2 (wages) - 1099-NEC (independent contractor income) - 1099-MISC (rents) - 1099-INT (interest) - 1099-R (retirement) - 1099-SSA (social security) - 1099-DIV (dividends) - K-1 (from partnership, S-corp, or trust) - 1095-A, 1095-B, 1095-C (health insurance) - Property Taxes - Closing Disclosure (real estate transactions) - Income and Expenses records for Schedule C business or Schedule E rental property - Cryptocurrency transactions
14Should I file my tax return as Married Filing Joint or Married Filing Separate?
This depends on your personal situation. We calculate the tax outcomes for both options to determine the most advantageous filing status for you.
15My child is in college. Can I still claim them on my tax return?
In certain situations, yes. Contact us so we can learn more about your situation and advise you on the best filing option.
16I received an inheritance. Do I have to report that on my tax return?
This depends on the type and method by which you received the inheritance. Contact us to learn more about inheritance reporting and filing requirements.
17My elderly parents are not sure if they have filed taxes for the past few years. Can you help me find out?
Yes, we can prepare state and federal Power of Attorney forms to access transcripts and determine which returns have been filed.
18My ex-spouse claimed our child erroneously on their tax return. What can I do?
We can help you remedy the situation to properly claim your child/children on your return when we prepare and file your return.For more detailed information or specific queries, feel free to Contact Us. Our team is here to provide the clarity and support you need to navigate your financial and tax-related questions effectively.
Contact Us
Our dedicated team is ready to assist you on your path to financial success — whether you're planning ahead or need answers today.