Sole Proprietorship in New York: How to Start One

A sole proprietorship is the default business structure in New York. If you start doing business under your own name and don't file anything to create an LLC or corporation, you're already a sole proprietor. That's the appeal: it's the fastest and cheapest way to legally operate a business in New York. It's also the riskiest, since there's no legal separation between you and the business, which means your personal assets are exposed if the business is sued or can't pay its debts.

This guide walks through what a New York sole proprietorship actually requires: the paperwork, the fees, and the tax registrations you need to have in place before you start taking money from customers.

What You'll Need

• A business name, either your own legal name or a made-up trade name (called an "assumed name" in New York)
• A completed Business Certificate (Certificate of Assumed Name) if you're using a trade name, filed with the county clerk in every county where you'll do business
• Cash for the county filing fee, which varies by county clerk, so confirm the exact amount with your local clerk's office before you file
• A federal Employer Identification Number (EIN) from the IRS, if you plan to hire employees or want to avoid using your Social Security number on business paperwork
• A Certificate of Authority from the New York State Department of Taxation and Finance if you'll sell taxable goods or services
• Any industry-specific or local licenses and permits that apply to your line of work
• A separate business bank account (not legally required for a sole proprietorship, but strongly recommended)

Step-by-Step: How to Start a Sole Proprietorship in New York

Step 1: Confirm a Sole Proprietorship Fits Your Situation

Before you start a sole proprietorship in New York, understand what you're accepting: unlimited personal liability. If your business is sued, incurs debt, or is found liable for damages, your personal bank accounts, car, and even your home can be at risk. There's no legal wall between you and the business the way there is with an LLC or corporation. If you're in a higher-risk field (contracting, food service, professional services where malpractice is a concern), it's worth comparing the cost of forming an LLC ($200 filing fee with the New York Department of State) against the liability exposure of staying a sole proprietor. For low-risk, low-revenue side businesses, many owners decide the simplicity of a sole proprietorship is worth it, at least to start.

Step 2: Choose Your Business Name

You can operate under your own legal name with no filing required at all. That's the simplest path for a new york sole proprietorship: if Jane Smith wants to sell handmade candles as "Jane Smith," she doesn't need to register a name anywhere. But if she wants to call the business "Jane's Candle Co.," that's a trade name, and New York requires her to register it.

Step 3: File a Business Certificate (DBA) With Your County Clerk

This is the core legal step for most people trying to start a sole proprietorship in New York under a name other than their own. Under Section 130 of the General Business Law, sole proprietors and general partnerships file a Business Certificate (commonly called a DBA, "doing business as") with the county clerk in each county where they conduct business, not with the New York Department of State. This is different from LLCs and corporations, which file their assumed name certificates with the Department of State (see the Department of State's assumed name page for that separate process).

County clerk fees for sole proprietors and partnerships are set individually by each county, so there's no single statewide number to quote. Call or check the website of the county clerk's office where your business is located before you go in, so you're not caught short on fees or missing a notarization requirement.

Step 4: Get a Federal EIN (Optional but Recommended)

A sole proprietor with no employees can legally use their Social Security number for tax filings. Most people still get a free EIN from the IRS anyway, because banks generally want one to open a business account, and it keeps your Social Security number off invoices and vendor paperwork. If you plan to hire anyone, an EIN isn't optional, it's required.

Step 5: Register for a Certificate of Authority if You'll Collect Sales Tax

If your sole proprietorship sells taxable goods or services in New York, you must register with the New York State Department of Taxation and Finance for a Certificate of Authority before making your first sale. Registration is handled online at tax.ny.gov/bus/st/register.htm. New York's state sales tax rate is 4%, and most counties and cities add their own local rate on top, so check the combined rate that applies to your specific location before you start charging customers. Skipping this step and collecting sales tax without a Certificate of Authority, or not collecting it at all when you should, is one of the most common and costly mistakes new sole proprietors make.

Step 6: Check for Industry-Specific and Local Licenses

New York does not issue a single, general statewide business license. Whether you need a license depends entirely on your industry and your location. A home-based consultant may need nothing beyond the steps above; a food business, a contractor, a salon, or a childcare provider will likely need specific state and local licenses or permits. New York Business Express runs a "Business Wizard" tool that walks through which state licenses and registrations apply to your specific type of business. Your city or county clerk's office can tell you about local permit requirements on top of that.

Step 7: Open a Business Bank Account

New York doesn't require a sole proprietor to keep business and personal money separate, but it's one of the most important practical habits to establish early. Mixing funds makes bookkeeping harder, makes it tougher to prove business expenses at tax time, and can undercut your credibility if you ever want a business loan or line of credit. Most banks will ask for your Business Certificate (if you filed one) and your EIN to open the account.

Step 8: Understand Your Tax Obligations

A sole proprietorship is a pass-through entity for tax purposes: there's no separate business tax return. Income and expenses are reported on Schedule C of your federal return, and the net profit flows through to your personal New York State income tax return, which uses a progressive rate structure with nine brackets published each year by the Department of Taxation and Finance at tax.ny.gov. If you live in New York City or Yonkers, you'll also owe an additional local personal income tax on top of the state rate. You're also responsible for federal self-employment tax and quarterly estimated tax payments if you expect to owe a meaningful amount, both federally and to New York State.

Step 9: Consider Insurance

Because a sole proprietorship offers no liability shield, insurance is one of the few tools available to limit your financial exposure. General liability insurance, professional liability (errors and omissions) coverage, and, if you have even one employee, workers' compensation insurance (which New York requires by law for most employers) are worth pricing out early, not after an incident happens.

Tips and Common Mistakes to Avoid

• Assuming "no state filing" means "no filing at all." Many new sole proprietors correctly learn that New York doesn't require Department of State paperwork for a sole proprietorship, then wrongly assume that means no filing is needed anywhere. The county-level Business Certificate is still required if you use a trade name.
• Filing in only one county. If you do business in multiple New York counties under an assumed name, you generally need to file a Business Certificate in each of those counties, not just where you're based.
• Skipping the Certificate of Authority. Selling taxable goods or services without registering for sales tax first can create back-tax and penalty problems that are far more expensive than the registration itself.
• Never separating finances. Even without a legal requirement to do so, running everything through a personal account makes an eventual switch to an LLC, and even routine bookkeeping, much harder than it needs to be.
• Ignoring local licensing. "New York has no general business license" doesn't mean your specific city, county, or industry has no requirements. Check both state and local rules for your specific type of business.

What You Can Generally Expect

For most people, the paperwork side of how to start a sole proprietorship in New York can often be completed in a single day: choosing a name, filing a Business Certificate at the county clerk if needed, and applying for an EIN online, which is typically issued the same day. Sales tax registration and any industry licenses may add more time, depending on your business type and how quickly your county clerk's office processes filings. In many cases, a sole proprietor in New York can be legally ready to open for business within a week or two of starting the process, though timelines can vary by county and by how many licenses your specific industry requires.

Disclaimer

This article is for general informational purposes only and does not constitute legal or tax advice. New York business filing requirements, fees, and tax rules can change, and individual circumstances vary. Before you start a sole proprietorship in New York, consult a licensed attorney and a CPA who can review your specific situation, especially around liability exposure, licensing, and tax planning.