Register in three places
Dept of State (LLC/corp), NYS Tax & Finance, NYC Dept of Finance — before you begin operations.
The big three
Know your tax type
UBT for sole prop / partnerships, GCT for corporations, BCT for banks. Each has its own filing.
Deadlines are strict
Mar 15 for S-Corp / partnership, Apr 15 for sole prop / C-Corp, quarterly for estimates. Miss one and interest starts.
Introduction
Exciting to start — daunting on taxes
Starting a business in New York City is exciting, but navigating the complex world of business taxes can be daunting. Whether you’re launching a tech startup in SoHo or opening a bakery in Brooklyn, understanding your tax responsibilities is essential to staying compliant and maximizing profitability.
In this guide, we break down the 10 most important things new business owners need to know about business taxes in NYC to help you avoid common pitfalls and make smart financial decisions.
01The 10 things
10 things new NYC business owners need to know
Each of these is easy to overlook — and each becomes expensive when it is.
01
You must register your business for NYC and NYS taxes
Before operations, register with the New York Department of State (if forming an LLC or corporation), the New York State Department of Taxation and Finance, and the NYC Department of Finance (for local taxes like the NYC General Corporation Tax). Failure to register properly can lead to fines or delays.
02
Understand the NYC business tax types
Unincorporated Business Tax (UBT) for sole proprietors and partnerships. General Corporation Tax (GCT) for corporations. Banking Corporation Tax (BCT) for financial institutions. Each has different rules and filing requirements.
03
Sales tax collection is mandatory for many businesses
If you sell tangible goods or certain services in NYC, you must collect NY State and City sales tax. As of 2025, the combined NYC rate is 8.875%. Apply for a Certificate of Authority, file returns (monthly/quarterly/annually), and keep detailed records.
04
Know your estimated tax payment requirements
Both New York State and NYC require quarterly estimated tax payments if you expect to owe over $1,000 in taxes for the year. Failure results in penalties and interest.
05
NYC offers tax incentives for small businesses
NYC Business Tax Credit for new businesses with low income. Relocation and Employment Assistance Program (REAP). Energy Cost Savings Program (ECSP).
06
Payroll taxes are a major obligation
If you hire employees, comply with federal and state payroll tax laws — withhold income tax, Social Security, and Medicare; pay unemployment and disability insurance. Payroll mistakes are among the most common issues new owners face.
07
Your business entity type impacts your tax liability
LLCs and sole props are taxed on personal income returns. S Corps use pass-through taxation with shareholder filings. C Corps face corporate income tax and double taxation on dividends.
08
NYC has specific filing deadlines
March 15 — S-Corp and partnership returns. April 15 — Sole proprietors and C-Corps. Quarterly estimated tax payments. Missing deadlines means late fees and interest.
09
Keep accurate records for audit protection
Keep receipts, invoices, and bank statements for at least 6 years. Track income and expenses using accounting software. Work with a licensed CPA to maintain accurate books.
10
Work with a trusted CPA in New York
Starting a business is challenging enough — don’t let taxes become an added burden. A knowledgeable CPA ensures you stay compliant, plan strategically, and keep more of what you earn.
02Deadlines
NYC business tax deadlines at a glance
March 15
S-Corp & partnership
Federal and NY State pass-through entity returns.
April 15
Sole prop & C-Corp
Individual return with Schedule C, and calendar-year C-Corp returns.
Quarterly
Estimated payments
April, June, September, January — for any owner expecting more than $1,000 in tax.
Ready to get expert help with your NYC business taxes?
Schedule a free consultation with George Dimov CPA today and get the peace of mind your business deserves. Call (212) 641-0673 or send the contact form.
03Final thoughts
Simplify the setup so you can focus on the business
Understanding business taxes in New York is crucial for success. While the process may seem overwhelming, working with a reputable CPA in New York can simplify everything — from entity selection to year-end filings.
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From the record
On making the tax side simple
“Plan early because if you don’t there might be a surprise. You just made a big purchase or you made a big sale in cryptocurrency or equity or stock. You don’t know how that will affect your taxes.”
George Dimov, CPA
“They’ve helped me file my quarterly sales and payroll taxes, manage income tax, and offered guidance where I had no idea what I was doing.”
Connor Mulvaney
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Start on the right financial footing
Schedule a free consultation before your first quarterly deadline
From entity selection to year-end filings, George Dimov CPA offers comprehensive CPA services tailored to local NYC business needs. Call (212) 641-0673 or send the contact form. No charge for the conversation.
Reviewed by George Dimov, CPA, New York, NY. Serving clients in all 50 states, 15+ years advising New York businesses on federal, state, and local taxation. President of George Dimov, CPA, a New York City firm serving clients across the five boroughs and nationwide.