Long Island Accounting Services

Paint your full financial picture with Sundack CPA

With Sundack CPA, you’ll get a complete view of your finances. We handle everything from everyday bookkeeping to smart tax planning, so you always know where your money stands and how to use it best.

Do your finances feel disjointed & unclear?

When your financial records are scattered and difficult to piece together, it’s like trying to navigate without a map. You can’t make informed decisions about hiring new staff, expanding your business, or investing in new opportunities. The lack of clear financial insight leaves you guessing about your cash flow, profitability, and overall financial health, making it hard to plan and grow confidently.

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We’re the one-stop shop for your Long Island accounting

At Sundack CPA, we help you bring all your financial information into one clear picture, so you can make smart, informed choices and move your business forward with certainty.

long island CPA service

Watertight bookkeeping

We keep your financial records organized and up-to-date, so you can trust the numbers you see and focus on running your business.

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Surprise-free taxes

With our proactive approach, you’ll always know what to expect at tax time, avoiding any last-minute shocks and ensuring you’re fully prepared.

long island accounting services

Forecast for the future

We help you plan for the future by forecasting and preparing for what’s ahead, so you can make informed decisions for your business.

What To Expect When Working
With Our Long Island Accounting Team

Unlike other accountants who are hard to reach, we’re available year-round to manage every aspect of your personal and business finances. Our goal is to help you keep more of your money by offering consistent support and expert advice.

Meet your team

Meet your team

Get to know the experts who will be handling your finances. Our team is dedicated to understanding your unique needs and providing personalized support.

Financial Foundation

Financial Foundation

We start by setting up a strong financial base for your business, ensuring all your records are accurate and well-organized from the start.

Clear numbers & insights

Clear numbers & insights

We provide easy-to-read reports that show you exactly how your business is doing, helping you make smarter decisions.

Meet regularly

Meet regularly

We’ll have regular meetings to review your finances, discuss your goals, and adjust our plans to keep everything on track.

CFO & advisory coaching

CFO & advisory coaching

We offer expert advice to help you plan for the future, manage your cash, and make important financial decisions.

Personal & business tax strategy

Personal & business tax strategy

We create tax plans that fit your personal and business needs, helping you save money and avoid surprises.

We take care of the little things__
from QuickBooks to cash flow

At Sundack CPA, we take care of the details so you can concentrate on running your business and doing what you do best.

"Professional, prompt, helpful are just a few words."

Professional, prompt, helpful are just a few words. We had such problems with a previous accountant. Thankfully, Sundack CPA, was able to help us. I would highly recommend this firm. Wish we would have known about them a long time ago. Very satisfied client. Thank you for your continued help. PS love Stephanie.

– Francine Leimeister

There’s a better way to handle your business accounting

We provide year-round support, at no additional cost, so you can always have peace of mind knowing your finances are in good hands. No more surprises or extra fees—just reliable, ongoing assistance.

Trust takes time to build.

Want to know more about us?