To close a sole proprietorship in New York, you need to cancel your DBA with the county clerk where you registered it, file a final sales tax return within 20 days of your last day of business, file a final NYS-45 within 30 days of your last wage payment if you had employees, file final federal returns with the IRS, and send a letter asking the IRS to deactivate your EIN. Because a sole proprietorship has no legal separation between you and the business, every skipped step leaves you personally exposed to penalties, back taxes, or lingering contract obligations.
Wind Down Debts, Contracts, and Accounts First
Deal with the private-sector side before you touch government paperwork. Pay off vendor invoices, settle remaining balances on commercial leases, and close out any credit lines tied to the business. Unpaid business debts are your personal debts, so creditors can pursue your personal assets long after the doors are shut.
Review every active contract and subscription. Commercial service agreements often require written notice anywhere from 30 days to several months before you can terminate without penalty, and walking away without following those provisions can leave you owing fees for the rest of the term. Comb through your bank and credit card statements for recurring charges — software, advertising, cloud services — that will keep billing until you cancel them in writing.
Close your business bank accounts only after all outstanding checks have cleared and final deposits have posted. Cancel business insurance policies in writing and ask about a refund of unearned premiums. If your trade required a local license, health permit, or other municipal authorization, contact the issuing agency to formally surrender it.
Cancel Your DBA at the County Clerk
If you operated under a name other than your own legal name, you filed a business certificate with the county clerk under New York General Business Law § 130. To undo that filing, submit a Certificate of Discontinuance of Business to the same county clerk’s office where you originally registered.
You’ll need the exact information from your original filing: the business name as it appears on the certificate, the date it was filed, and the full names and addresses of everyone listed. If you can’t find your paperwork, the county clerk can pull the filing from their records. The discontinuance form must be signed before a notary public, so plan for that step.
Most counties accept the form in person or by mail. If you mail it, include a self-addressed stamped envelope so the clerk can return a certified copy. Filing fees vary by county, so call the clerk’s office or check their website before submitting. Once processed, you’ll get a stamped copy or receipt confirming the DBA is no longer active. Keep that document permanently as proof you stopped doing business under that name.
Close Your New York Sales Tax Account
If you held a Certificate of Authority to collect sales tax, this account has the tightest deadline of the whole closure: you must file your final sales tax return within 20 days of the date you stop doing business.1Tax.NY.gov. Filing a Final Sales Tax Return Miss it and you can trigger penalties and estimated assessments even though nothing is being sold anymore.
Filing online, check the box indicating it’s a final return and enter your last day of business. On paper, use Form ST-100 (quarterly filers) or Form ST-101 (annual filers), cross out the preprinted tax period dates, write in the correct final period, and write “FINAL RETURN” across the top.1Tax.NY.gov. Filing a Final Sales Tax Return Once the return processes, the Tax Department inactivates your account automatically. Destroy your copy of the Certificate of Authority so it can’t be misused.2Tax.NY.gov. Amending or Surrendering a Certificate of Authority
If you’re selling the business or its assets rather than simply shutting down, give the buyer a copy of Form TP-153, Notice to Prospective Purchasers of a Business or Business Assets, and collect sales tax on any taxable assets in the sale.2Tax.NY.gov. Amending or Surrendering a Certificate of Authority
File Final New York State Returns
There’s no special “final” version of the state income tax return for sole proprietors. Report your business income on your regular personal return for the year you closed, covering income and deductions through your last day of operations.
If You Had Employees: NYS-45 Within 30 Days
File a final Form NYS-45, the Quarterly Combined Withholding, Wage Reporting and Unemployment Insurance Return, within 30 days of the date you stopped paying wages.3Tax.NY.gov. Close or End a Business Enter the date you ceased paying wages on line 23, and indicate whether you sold all or part of your business. This one filing closes both your state withholding tax obligations and your unemployment insurance account.
Provide each employee with a final W-2 by January 31 of the year following the last wage payment, covering all wages paid during that calendar year.4Internal Revenue Service. Employment Tax Due Dates
Close Out With the IRS
The federal side runs parallel to the state process, and skipping it is one of the most common closure mistakes.
Your Final Federal Return
File Schedule C with your Form 1040 for the year you close, reporting income and expenses through your last day of operations. If your net earnings from the business were $400 or more that year, you’ll also owe self-employment tax and must file Schedule SE. If you paid any independent contractor $600 or more during the final calendar year, report those payments on Form 1099-NEC.5Internal Revenue Service. Closing Your Business
Federal Employment Tax Returns
If you had employees, file a final Form 941 (or Form 944 if you were an annual filer) for the quarter in which you made final wage payments, checking the box that indicates the business has closed and entering the date of the last paycheck.5Internal Revenue Service. Closing Your Business The quarterly return is due by the last day of the month following the end of the quarter.4Internal Revenue Service. Employment Tax Due Dates
File a final Form 940 for federal unemployment tax (FUTA) for the calendar year in which you paid final wages. Check box “d” in the Type of Return section to mark it as final, and attach a statement listing the name and address of the person who will keep the payroll records going forward.5Internal Revenue Service. Closing Your Business
Deactivate Your EIN
The IRS cannot cancel an Employer Identification Number once assigned, but it can deactivate the number so it’s no longer tied to an active business.6Internal Revenue Service. If You No Longer Need Your EIN Send a letter that includes your business’s legal name, EIN, address, and the reason for closing the account. Mail it to one of these addresses:
- Internal Revenue Service, MS 6055, Kansas City, MO 64108, or
- Internal Revenue Service, MS 6273, Ogden, UT 84201
The IRS won’t close the account until all required returns are filed and all taxes paid, so handle the returns first.5Internal Revenue Service. Closing Your Business
Report Any Sale of Business Assets
Selling off equipment, vehicles, or other business property as part of winding down means reporting those transactions on Form 4797, Sales of Business Property.7Internal Revenue Service. About Form 4797, Sales of Business Property This covers depreciable property, real estate used in the business, and other non-inventory assets. Any gain may be treated as ordinary income to the extent of prior depreciation deductions, which catches some people off guard.
If you sell the business as a package — name, customer list, and other assets together — both you and the buyer must file Form 8594, Asset Acquisition Statement, to allocate the purchase price across asset categories.5Internal Revenue Service. Closing Your Business Remaining inventory that you sell generates ordinary income or loss and gets reported on Schedule C.8Internal Revenue Service. Sale of a Business
How Long to Keep Your Records
Closing the business doesn’t mean the records can go in the shredder. Retention periods depend on the record type:
- General tax records: at least three years from the date you filed your final return, or two years from the date you paid the tax, whichever is later.9Internal Revenue Service. How Long Should I Keep Records?
- Employment tax records: at least four years after the tax was due or paid, whichever is later.9Internal Revenue Service. How Long Should I Keep Records?
- Payroll records: at least three years under federal wage and hour rules.10U.S. Equal Employment Opportunity Commission. Recordkeeping Requirements
- Property and depreciation records: until the statute of limitations expires for the year you disposed of the property, since you’ll need them to calculate gain or loss.9Internal Revenue Service. How Long Should I Keep Records?
- Bad debt or worthless securities claims: seven years.9Internal Revenue Service. How Long Should I Keep Records?
Hold onto your final Form 940 and the statement identifying where payroll records are stored. An audit or a former employee dispute can surface years later, and clean records are the difference between a quick resolution and a drawn-out problem. When in doubt, keep everything for at least seven years.