Over 25 Years of Dedicated Tax Preparation and Accounting Services in the Tri-state Area
Don Kostik, CPA is a trusted accounting and tax preparation firm serving individuals, corporations, and CPA firms throughout New York, New Jersey, and Connecticut with affordable, high-quality financial solutions and a commitment to charitable giving.Your Trusted Partner for Affordable Tax Excellence.

Personal Taxes - Planning & Filing
Let us take the stress out of tax season. We carefully review your unique situation to uncover every deduction and credit you deserve, ensuring your return is accurate and optimized. With our attentive support, you can feel confident that your personal taxes are handled with the utmost care and expertise.

Personal Wealth Maximization
Plan for a brighter future with guidance you can trust. Our advisors work closely with you to create a personalized roadmap for retirement, education, investments, and more—so you and your loved ones can achieve your goals with clarity and peace of mind, retire early, and maximize your wealth.

Business Taxes - Planning & Filing
Navigate the complexities of business taxation with confidence. We provide year-round tax planning, preparation, and compliance for businesses of all sizes and structures. Our proactive approach helps you minimize liabilities, maximize savings, and stay ahead—so your business can thrive.

Bookkeeping and Advisory
Focus on growing your business while we handle the details. From incorporation and bookkeeping to payroll and accounting, our dedicated team supports your operations with reliable expertise and personalized attention—empowering you to make informed decisions every step of the way.
SPECIALIZED INDUSTRY EXPERTISE
Serving Diverse Industries in Tri-state Area
Tailored Financial Solutions for Your Sector. We understand that each industry has unique financial challenges and opportunities. Our team has experience providing specialized CPA services to a variety of sectors across Tri-state Area.

Strategic financial planning, R&D tax credits, and scalable accounting solutions for tech startups and IT companies.

Financial management, revenue cycle optimization, and compliance for healthcare professionals.

Expertise in property accounting, 1031 exchanges, and investment analysis for the real estate sector.

Trust accounting (IOLTA), litigation support, and financial planning tailored for legal practices.

Specialized accounting and advisory for manufacturing operations and retail businesses.

Expert guidance on funding, accounting, tax compliance, and financial reporting for construction companies.
Your Affordable Financial Partner
Our Commitment: Understanding Your Needs and Delivering Value
Hello! I'm Don Kostik
At Don Kostik, CPA, your financial success is our priority. We pride ourselves on the trust and lasting relationships we build with our clients, many of whom have relied on us for years. This loyalty is a testament to our unwavering commitment to quality service, affordable rates, and consistent professionalism while giving back to the community through charitable contributions.
Affordable Excellence
You deserve quality without the high price tag. We provide exceptional tax and accounting services at rates that won't break your budget, because everyone deserves professional financial guidance.
25+ Years of Expertise
Benefit from over two decades of experience serving individuals, corporations, and CPA firms throughout the Tri-state Area with comprehensive tax and accounting solutions.
Charitable Commitment
We believe in giving back. Each year, 10% of our fees are donated to worthy causes like St. Jude and Tunnel to Towers, contributing thousands of dollars to support these important organizations.
CLIENT TESTIMONIALS
What Our Clients Say
Real stories from satisfied clients who have achieved their financial goals with our help. We are proud of the trust our clients place in us and the results we deliver.
"Don helped me with a complex tax situation that had been giving me headaches for months. Even though I wasn't a current client, he took time to understand my situation and gave excellent professional advice. His rates are incredibly fair and I'll definitely be using his services going forward."
Jennifer Thompson
Small Business Owner, Marketing Consultant
2 weeks ago
"I've been working with Don Kostik for my family's taxes for the past 5 years. His attention to detail and affordable rates have saved us thousands of dollars. He always finds deductions we would have missed and explains everything clearly."
Robert Martinez
Family Client · Manufacturing Supervisor
1 month ago
"We've collaborated with Don on several overflow projects over the years. His professionalism and expertise are exceptional. He understands the pressures CPA firms face during busy season and always delivers quality work on time. A true professional in every sense."
Miller & Associates CPA
CPA Firm Partner
6 months ago
"Don was incredibly patient during our tax consultation, taking time to explain every aspect of our situation. His fees are so reasonable compared to the big firms, and the quality of service is even better. We felt heard and valued as clients."
Maria Gonzalez
Retired Teacher
2 months ago
"Don called me exactly when scheduled for our appointment. He thoroughly reviewed my business tax situation and provided clear guidance on quarterly payments and deductions. His knowledge is extensive and his approach is very professional. Will definitely continue using his services."
Kevin Sullivan
Construction Business Owner
3 weeks ago
"We were looking for an affordable CPA who could handle our complex family trust situation and found exactly what we needed! Don and his team did an excellent job organizing our records from the past 3 years and getting everything filed properly. Outstanding value for professional service!"
Linda Chen
Estate Planning Client
6 weeks ago
"Don provided excellent guidance during our consultation about starting a new business. He was knowledgeable about entity structures, clearly professional, and very responsive. I appreciate his straightforward advice on tax planning strategies. Definitely recommend him!"
David Kim
New Business Startup
4 months ago
"Met with Don to review our 2022 and 2023 tax returns which were prepared by another firm. Don reviewed both filings and made valuable suggestions for improving our tax strategy and reducing our liability going forward. Very thorough analysis."
Patricia Walsh
Retiree, Investment Income
8 months ago
"True Professional with Real Experience. After deciding to switch CPAs due to high fees elsewhere, I found the transition with Don Kostik smooth and affordable. I was seeking a proven CPA with extensive knowledge in individual and business taxes, and Don exceeded expectations."
Mark Anderson
Restaurant Owner
5 months ago
Comprehensive CPA Services
Your Financial Health is Our Priority
We offer a full suite of bookkeeping, accounting, tax, and advisory services tailored to individuals and businesses. Let our expertise guide your financial decisions.
Business Accounting & Advisory
From meticulous bookkeeping, payroll, and QuickBooks® support to strategic part-time CFO services and business valuation. We help your business thrive.
Tax Preparation & Planning
Expert preparation of personal, business, trust, and estate tax returns coupled with year-round planning to minimize your tax burden.
IRS Problem Resolution
Professional representation before the IRS for audits, back taxes, offers in compromise, payment plans, and more.
Personal Financial Planning
Comprehensive guidance on retirement, college funding, estate planning, and investment strategies to secure your financial future.
New Business Formation
Expert guidance on entity selection, business plan development, startup financing, and establishing accounting systems.
Estate & Trust Services
Professional administration of estates and trusts, including tax planning, fiduciary accounting, and compliance reporting.
Frequently Asked Questions
Quick answers to common questions about our CPA services. If you don't see your question here, please don't hesitate to contact us.
Talk to Don — your trusted expert CPA!

Let my 25+ years of wisdom and expertise work to maximize your tax benefits and secure your financial future. Book a free consultation with me to discuss your needs and goals so you can decide what's best for you.