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Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteA U.S. subsidiary’s federal tax classification depends on its legal form, number and type of owners, and any valid tax elections—not simply on the fact that it is owned by another company. For a domestic eligible entity, the usual default is partnership treatment if it has multiple owners and disregarded-entity treatment if it has one owner. Elections, including S-corporation and qualified subchapter S subsidiary (QSub) elections, can change the result.
Start with the subsidiary’s legal form
“Subsidiary” describes an ownership relationship; it is not a federal tax classification. First identify the entity under state law and determine whether it is an eligible entity under the federal classification rules. Some entity types are treated as corporations under the regulations rather than choosing among the eligible-entity defaults. The IRS explains the election framework on its About Form 8832 page.
If the subsidiary is an eligible entity, its owner count and election history help determine how it is classified for federal tax purposes. The following defaults apply to domestic eligible entities; do not assume they cover every legal form or a foreign entity.
Apply the domestic eligible-entity default
| Owners | Usual federal income-tax default | What to check |
|---|---|---|
| One owner | Disregarded entity | Confirm the entity is eligible and has not made an effective election for corporate treatment. |
| Two or more owners | Partnership | Confirm the entity is eligible and has not made an effective election for corporate treatment. |
These are defaults, not compulsory outcomes for every eligible entity. An eligible entity may generally elect corporate classification. The IRS describes the LLC defaults and exceptions on its Limited liability company (LLC) page.
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Check elections and effective dates
Form 8832: general entity-classification election
An eligible entity uses Form 8832 to elect a classification or change its current classification. Review the filed form, its effective date, and any earlier classification elections before relying on the default. An elective change is generally subject to a 60-month limitation, with exceptions. The IRS discusses the restriction and possible exceptions in its Limited liability company – Possible repercussions guidance and Publication 3402.
The IRS describes late-election relief for some situations, but it is conditional; eligibility depends on the applicable procedure and the entity’s facts. Check the IRS Late election relief guidance rather than assuming relief is available.
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Form 2553: S-corporation election
A qualifying eligible entity may elect S-corporation status by filing Form 2553 if it meets the S-corporation eligibility rules and filing requirements. When the election is effective, the entity is treated as a corporation from that date and generally does not need a separate Form 8832. Being a subsidiary does not itself make an entity eligible for S status. Review the IRS Instructions for Form 2553 for the applicable requirements and timing.
Form 8869: QSub election by an S-corporation parent
If the parent is an S corporation, it may be able to elect QSub treatment for an eligible wholly owned subsidiary by filing Form 8869. Once the election is effective, the subsidiary generally is not treated as a separate corporation for federal tax purposes, and its tax items are treated as those of the parent. This is a distinct route from the subsidiary making its own S election. See the IRS Instructions for Form 8869 for QSub eligibility and election rules.
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What a single-owner subsidiary’s disregarded status means
For federal income-tax purposes, a disregarded subsidiary generally is not treated as separate from its owner. That does not dissolve the subsidiary or erase its separate state-law existence. Nor is it disregarded for every federal tax purpose: a single-member LLC is treated as a separate entity for employment taxes and certain excise taxes. The IRS explains these distinctions in its guidance on Single member limited liability companies.
Quick Recap
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Use this sequence to determine the likely classification
- Identify the legal entity. Confirm its state-law form and whether it qualifies to use the eligible-entity classification rules.
- Count its owners. For a domestic eligible entity, one owner generally points to disregarded status; two or more generally point to partnership treatment.
- Review election records. Look for Form 8832 or other relevant elections, confirm effective dates, and check whether a prior election affects a proposed change.
- Check for an S-corporation election. If Form 2553 was filed, verify eligibility, filing timing, and the effective date.
- Check the parent relationship. If the parent is an S corporation and owns the subsidiary wholly, determine whether a QSub election on Form 8869 applies.
- Separate classification from other obligations. Identify any employment-tax, excise-tax, state-law, or other reporting treatment that remains relevant even if the subsidiary is disregarded for income tax.
Before changing or relying on a classification
- Confirm the subsidiary’s exact legal form and ownership, including whether ownership is wholly held by an S-corporation parent.
- Obtain copies of prior classification and S-corporation/QSub election filings and verify their effective dates.
- Check the current IRS form revisions and instructions before filing; the instructions linked above include dated editions, and filing requirements can change.
- Do not treat the general 60-month rule or late-election relief as an automatic bar or remedy; exceptions and relief depend on specific conditions.
- For complex election histories, cross-border ownership, or a planned restructuring, seek advice from a tax professional familiar with entity classification.
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