How to Close a Business With the IRS: Final Returns, EIN, and Records

To close a business with the IRS, you file a final income tax return for the entity, wrap up any employment tax and information-return obligations, report the sale or disposition of business assets, and then send a written request to close your Employer Identification Number account. Every final return has a “final return” box you check so the IRS stops expecting future filings, and the EIN account stays open until all required returns are filed and balances paid.

File Your Final Income Tax Return

The form you file depends on how the business was organized. Whichever return applies, mark it as the final return and cover the period from the start of the tax year through the date operations ended.

Sole Proprietorships

Report the final year of business activity on Schedule C attached to your personal Form 1040.1Internal Revenue Service. Closing a Business Include all income earned and expenses incurred through the day you stopped operating. The deadline is your regular personal return date, April 15 of the following year.

Partnerships

File a final Form 1065 covering the period through the date the partnership wound up its affairs. It is due by the 15th day of the third month after the tax year ends; a partnership that closes June 30 has a September 15 deadline.2Internal Revenue Service. Instructions for Form 1065 Filing late or leaving out required information costs $255 per partner for each month the return is overdue, up to 12 months.3Internal Revenue Service. Rev Proc 2024-40 A five-partner return that runs the full 12 months reaches $15,300.

C Corporations and S Corporations

C corporations file a final Form 1120, and S corporations file a final Form 1120-S. A dissolved corporation generally must file by the 15th day of the fourth month after the date of dissolution.4Internal Revenue Service. Instructions for Form 1120 Check the “final return” box on the form.

Any corporation that adopts a resolution or plan to dissolve or liquidate its stock must also file Form 966 within 30 days of adopting the plan, with a certified copy of the resolution attached.5Internal Revenue Service. Form 966 – Corporate Dissolution or Liquidation If the plan is later amended, file an updated Form 966 within another 30 days.

An S corporation’s final return also reports distributions to shareholders. Distributions generally come out tax-free to the extent of each shareholder’s stock basis, with any excess treated as capital gain, and the treatment depends on whether the company has accumulated earnings and profits.6Office of the Law Revision Counsel. 26 USC 1368 – Distributions

Wrap Up Employment Taxes and Information Returns

If the business had employees, several payroll-related filings must be completed before the IRS will treat the account as closed. Missing these can create personal liability for the owner, not just a corporate balance due.

Your final filings include:

For information returns due in 2026, the penalty for filing late or incorrect W-2s and 1099s is $60 per form if fixed within 30 days, $130 per form through August 1, and $340 per form after that or if you never file. Intentional disregard raises the penalty to $680 per form.11Internal Revenue Service. Information Return Penalties

Trust Fund Recovery Penalty

Anyone responsible for collecting and paying over payroll taxes, including business owners, officers, and sometimes bookkeepers, can be personally assessed the Trust Fund Recovery Penalty. It equals 100% of the taxes withheld from employees’ paychecks that were never sent to the IRS.12Office of the Law Revision Counsel. 26 USC 6672 – Failure to Collect and Pay Over Tax or Attempt to Evade or Defeat Tax Dissolving the business does not eliminate this liability.

Report Asset Sales and Canceled Debt

If you sold, transferred, or abandoned business property while winding down, those transactions belong on the final return.

Form 4797 covers the sale or exchange of real estate, equipment, machinery, and other business property, and determines whether each sale produces ordinary income or long-term capital gain.13Internal Revenue Service. 2025 Instructions for Form 4797 – Sales of Business Property If you claimed depreciation over the years, a portion of the gain may be recaptured and taxed as ordinary income.

When an entire business is sold and goodwill or going-concern value is part of the deal, both buyer and seller must file Form 8594, allocating the total purchase price across asset classes using consistent fair-market values.14Internal Revenue Service. Instructions for Form 8594 Inconsistent reporting between the two parties is a common trigger for IRS scrutiny.

Canceled debt is a separate issue. If a creditor forgives $600 or more, you may receive a Form 1099-C, and the forgiven amount is generally taxable income.15Internal Revenue Service. Instructions for Forms 1099-A and 1099-C Two exceptions matter for closing businesses: debt discharged in a Title 11 bankruptcy is excluded entirely, and outside of bankruptcy you can exclude canceled debt to the extent you were insolvent immediately before the cancellation. To claim the insolvency exclusion, attach Form 982, check the box on line 1b, and enter the excludable amount on line 2. Part II of the form requires you to reduce certain tax attributes, such as net operating loss carryovers, to account for the exclusion.16Internal Revenue Service. Publication 4681 – Canceled Debts, Foreclosures, Repossessions, and Abandonments

Terminate Any Retirement Plan

If the business sponsored a 401(k), SEP-IRA, SIMPLE IRA, or similar plan, you must formally terminate it and distribute assets to participants. The IRS expects distribution as soon as administratively feasible, generally within one year of termination.17Internal Revenue Service. Retirement Topics – Termination of Plan Participants can usually roll their balance into another qualified plan or an IRA to avoid immediate tax.

Before distributing assets, give participants a notice of their election rights 30 to 180 days before the distribution date. If you plan to request a determination letter confirming the plan’s qualified status at termination, notify employees 10 to 24 days before you submit that application.18Internal Revenue Service. Retirement Plans FAQs Regarding Plan Terminations

Once all plan assets have been distributed, file a final Form 5500. The short plan year ends when all assets are fully distributed, and the final return is due the last day of the seventh calendar month after that.19U.S. Department of Labor. Instructions for Form 5500 – Annual Return/Report of Employee Benefit Plan If assets are still in the plan at year-end, you must keep filing Form 5500 for each year the plan holds assets.

Close Your EIN Account

An EIN is permanently assigned and cannot be reused or transferred, but you still need to close the account so the IRS stops treating your business as active. The IRS will process this only after all required returns are filed and all balances paid.

Send a written letter to:

Internal Revenue Service
Cincinnati, OH 459991Internal Revenue Service. Closing a Business

Include the full legal name of the business as it appeared on the original EIN application, the nine-digit EIN, the business address, and the reason for closing, such as dissolution, sale, or cessation of operations. If you still have the original EIN assignment notice (CP 575 or 147C letter), attach a copy to speed processing.20Internal Revenue Service. Publication 5447-A – How to Close a Partnership

If the responsible party for the business’s tax matters changed at any point before closure, you must report that change on Form 8822-B within 60 days.21Internal Revenue Service. Form 8822-B – Change of Address or Responsible Party – Business Skipping this can delay closure or route IRS correspondence to the wrong person.

What Happens If You File or Pay Late

The IRS charges separate penalties on the final income tax return itself:22Office of the Law Revision Counsel. 26 USC 6651 – Failure to File Tax Return or to Pay Tax

  • Failure to file: 5% of the unpaid tax per month (or partial month), capped at 25%.
  • Failure to pay: 0.5% of the unpaid tax per month, also capped at 25%.
  • When both apply in the same month, the failure-to-file penalty is reduced by the failure-to-pay amount, so the combined rate is 5% per month, not 5.5%.

Interest also accrues daily on any unpaid balance. For the first quarter of 2026, the IRS underpayment interest rate is 7% for most taxpayers, calculated as the federal short-term rate plus three percentage points. Large corporate underpayments over $100,000 are charged the short-term rate plus five percentage points.23Internal Revenue Service. Quarterly Interest Rates Interest compounds daily on both the unpaid tax and any accumulated penalties until the balance is paid in full.

How Long to Keep the Records

The IRS can generally audit a return within three years of filing. That period extends to six years if the return understated gross income by more than 25%, and to seven years if you claimed a deduction for worthless securities or bad debts.24Internal Revenue Service. How Long Should I Keep Records Because a closing business tends to involve asset dispositions and final depreciation calculations, keeping everything for at least seven years after the final return is the safest approach. Save copies of every return filed, supporting schedules, EIN closure correspondence, certified mail receipts, and bank statements covering the final operating period.

State Dissolution Is a Separate Step

Closing accounts with the IRS handles only the federal side. Most businesses also need to file articles of dissolution or a similar document with the state where they were formed, along with any state where they registered to do business. Skip this and the state can keep charging annual report fees, franchise taxes, or other assessments even though the business is not operating. Check with your state’s secretary of state office or equivalent agency to confirm what is required.