Did a common parent's federal limitations waiver also extend California assessment and refund periods for a subsidiary included in consolidated federal returns?

Plain-English summary

California Legal Ruling 80 treated a federal limitations waiver signed by a common parent as effective for a subsidiary included in the group's consolidated federal returns.

Even though the subsidiary filed separate California franchise-tax returns and signed no waiver of its own, the parent acted as its authorized agent under the historical federal consolidated-return rules.

The parent's waiver extended both California's time to propose an additional assessment and the subsidiary's time to claim a refund or credit.

Facts addressed by the ruling

The taxpayer was a subsidiary of X Corporation.

For 1942, 1943, and 1944:

• the parent included the subsidiary's income in consolidated federal returns; and
• the subsidiary filed separate California franchise-tax returns.

The parent signed a federal waiver keeping the affiliated group's deficiency-assessment period open through June 1953.

The subsidiary signed no federal or California waiver.

Federal consolidated-return agency

The ruling described federal law as applying a common parent's waiver for a consolidated-return period to every member of the affiliated group.

Federal regulations conditioned consolidated-return filing on each member's written consent to the rules and written authorization for the common parent to file the return.

The subsidiary was therefore treated as acting through the parent as its agent.

How former section 25663a applied

Former section 25663a extended California's period for mailing proposed assessments when the taxpayer agreed to extend or renew the federal deficiency-assessment period.

Because the parent executed the federal waiver as agent for the subsidiary, the ruling treated the subsidiary as having made the required agreement.

The California assessment period was extended even though the subsidiary itself had signed no separate waiver.

Refund period also extended

The ruling applied the same result to the taxpayer side of the limitations rules.

The period during which the subsidiary could claim a refund or credit of an overpayment was also extended.

What this means for you

Affiliated corporate groups

Under the historical ruling, a common parent's procedural act for a consolidated federal return could affect group members' separate California limitation periods.

Subsidiary companies

The absence of a subsidiary's signature did not end the inquiry. Written consolidated-return consents and agency authorization allowed the parent to bind the subsidiary.

Accountants and tax professionals

Review the federal consolidated-return years, membership dates, consents, agency provisions, waiver scope and expiration, California return structure, and current federal-change statutes for both assessments and refunds.

Common questions

Q: Did the subsidiary sign its own waiver?

A: No.

Q: Why did the parent's waiver still apply?

A: The subsidiary had consented to the consolidated-return regulations and authorized the parent to act for the group.

Q: Did separate California returns change the result?

A: No. The ruling still treated the federal waiver as satisfying former section 25663a for the subsidiary.

Q: Which California period was extended?

A: The period for proposing additional assessment.

Q: Did the extension benefit only the state?

A: No. It also extended the subsidiary's period to claim a refund or credit.

Citations and references

• Former Cal. Rev. & Tax. Code § 25663a
• Historical federal consolidated-return regulations governing member consent and common-parent authority

Source

• Landing page: California FTB Legal Rulings
• Official HTML: Legal Ruling 80

Original ruling text

Home

Legal Ruling 1958-80

California Franchise Tax Board
Legal Ruling No. 080

June 17, 1958

Federal Waivers: Effect of Parent Corporations Waiver on Subsidiaries

When the parent corporation files a consolidated Federal return and subsequently signs a Federal waiver the effect, for purposes of section 25663a of the Bank and Corporation Tax Law, is the same as if the subsidiary itself had given a Federal waiver.

Taxpayer is a subsidiary of X Corporation. For the years 1942, 1943 and 1944 taxpayer’s income was included in consolidated returns filed by the parent for Federal tax purposes. However, for franchise tax purposes, taxpayer filed separate returns. The parent signed a Federal waiver holding open through June, 1953, the period for assessing deficiencies upon the affiliated group for the above years. No Federal or State waivers were signed by the taxpayer. Advice is requested whether the fact that the parent gave Federal waivers keeps open the statute of limitations on the separate return of taxpayer for state tax purposes.

Under the Federal law, a waiver given by the common parent corporation of an affiliated group, in respect to the tax for a consolidated return period, is applicable to each member corporation of the affiliated group. The Federal Regulations also provide that the privilege of filing consolidated returns is conditioned upon all members of the affiliated group consenting to the applicable regulations. This consent must be given in writing along with written authorization for the common parent to make a consolidated return. Section 25663a of the Bank and Corporation Tax Law provides for extension of the period for mailing notices of proposed assessments if a taxpayer agrees to an extension or renewal of the period for proposing and assessing deficiencies for federal income tax purposes.

In view of the above it is concluded that where the taxpayer is a member of an affiliated group which has filed a consolidated Federal return for the years involved, and the common parent has executed a Federal waiver, under Federal Regulations the taxpayer, acting through its agent, the parent, is considered as having made the agreement. Therefore, section 25663a is satisfied and the period during which additional assessment can be proposed as to the taxpayer is extended. Likewise, the period in which the taxpayer may claim a refund or credit of an overpayment is extended.

Last updated: 09/24/2025