Form 8869 is the election a parent S corporation files to treat a subsidiary it owns 100% of as a qualified subchapter S subsidiary, or QSub. Once the election takes effect, the subsidiary is treated as liquidated into the parent for federal tax purposes, and its assets, liabilities, income and deductions are reported as the parent's. The effective date you ask for generally can't be more than 2 months and 15 days before you file, or more than 12 months after.
Everything below comes from the IRS Instructions for Form 8869 (Rev. December 2020), the current revision on the IRS site, as of October 2026.
What the election does
The QSub election results in a deemed liquidation of the subsidiary into the parent. After it, the QSub isn't treated as a separate corporation for federal tax purposes. Because the liquidation is deemed rather than real, you don't file Form 966, the corporate dissolution form. The subsidiary may still need a final return if it was a separate corporation before the deemed liquidation, unless the election is part of an F reorganization under Rev. Rul. 2008-18.
The insight people miss is the word 'federal'. The instructions describe the QSub as not treated as a separate corporation for federal tax purposes, and it may keep using its own EIN. What folds into the parent is the federal income tax reporting, which then runs through the parent's Form 1120-S.
Which subsidiaries qualify
An eligible subsidiary is a domestic corporation owned 100% by an S corporation that isn't one of these ineligible corporations:
- a bank or thrift that uses the reserve method of accounting for bad debts
- an insurance company taxed under subchapter L
- a domestic international sales corporation (DISC) or former DISC
The parent itself must already be an S corporation, which means it made its own election on Form 2553. In an F reorganization, the instructions say the newly formed parent files Form 2553 and the QSub election is made for the old S corporation.
The timing rule
You can file the election at any point in the tax year. The limit is on the effective date you request:
| If you file the election | Effective date |
|---|---|
| Up to 2 months and 15 days after the date you want | The date you requested |
| More than 2 months and 15 days after the date you want | Generally treated as late: 2 months and 15 days before the filing date |
| Up to 12 months before the date you want | The date you requested |
| More than 12 months before the date you want | 12 months after the filing date |
A late election can still be accepted as timely if the corporation shows reasonable cause. That normally means asking for a private letter ruling and paying a user fee, but Rev. Proc. 2013-30 sets out relief from the ruling and fee requirements. An election is ineffective, whatever its timing, if the subsidiary was eligible once but isn't eligible when the election is made.
Filling it in
- Part I: the parent S corporation's details. Include any suite or room number, or a P.O. box if the post office doesn't deliver to the street address.
- Part II: the subsidiary's details and the effective date you're asking for. If it shares the parent's address, enter 'Same as parent'. For more than one subsidiary, attach a separate sheet for each, in the same format and line numbers, with the parent's name and EIN at the top.
- Line 8: the subsidiary's EIN. A QSub may not need one; if it doesn't have one, enter 'N/A'. If it has filed returns before under an EIN, enter that EIN. Leaving it off can trigger a notice of delinquent filing to the QSub.
- Line 16b: if the subsidiary was part of a consolidated return, the common parent's EIN.
- Signature: the president, vice president, treasurer, assistant treasurer, chief accounting officer, or another officer authorized to sign the parent's S corporation return, signs and dates it.
For a tiered group elected on the same date, the parent can set the order of the deemed liquidations on an attachment. If it doesn't, they're treated as happening from the lowest tier upward.
If the QSub wants its own EIN and doesn't have one, it can apply for one; in an F reorganization the old S corporation keeps its EIN and the new parent gets a new one.
Where to file and what happens next
File Form 8869 with the IRS service center where the subsidiary filed its most recent return. If the parent forms a new subsidiary and elects effective on formation, send it to the service center where the parent filed its most recent return.
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The service center tells the corporation whether the election is accepted and when it takes effect, or that it isn't accepted. You should generally get a decision within 60 days. If you've heard nothing within 2 months of filing, the instructions say to follow up by calling 800-829-4933. If the IRS later questions whether you filed, acceptable proof is a timely postmarked certified or registered mail receipt (or the equivalent from a designated private delivery service), a Form 8869 with an accepted stamp or a stamped IRS received date, or an IRS letter saying it was accepted.
Ending a QSub election
Once made, the election stays in effect until it's terminated. After a termination, IRS consent is generally needed for another QSub election for that former subsidiary, or its successor, for any tax year before the fifth tax year after the first tax year the termination took effect. So treat it as a long-term choice, not a switch you flip each year.
The verdict
If your S corporation owns all of a second company and you'd rather file one federal return than two, Form 8869 is the tool, and the timing window is generous if you file promptly. Send it with tracking, note the 60-day decision window, and keep the proof of filing with the parent's records. Weigh it against keeping a separate corporation first: the S corp vs C corp guide covers the bigger structural choice.
Frequently asked questions
What is Form 8869?
It's the form a parent S corporation uses to elect to treat a 100% owned eligible subsidiary as a qualified subchapter S subsidiary (QSub).
What happens when a QSub election is made?
The subsidiary is treated as liquidated into the parent for federal tax purposes, and its assets, liabilities and items of income, deduction and credit are treated as the parent's.
How far back can a Form 8869 election take effect?
Generally no more than 2 months and 15 days before the date the election is filed, unless late election relief applies.
Do I file Form 966 for a QSub election?
No. Because the liquidation is deemed, the instructions say not to file Form 966.
How long does the IRS take to accept Form 8869?
You should generally get a determination within 60 days. If you've heard nothing after 2 months, call 800-829-4933.
