407 Rate Calculator

This 407 rate calculator helps you determine if a corporation qualifies as a “domestic subsidiary” under 26 U.S. Code § 407. This status is crucial for allowing U.S. citizens employed by such subsidiaries to participate in the U.S. parent corporation’s retirement plans. Enter the required percentages below to get an instant qualification analysis.

Domestic Subsidiary (IRC § 407) Test

Enter values to see qualification status

Ownership Test (≥80%)

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Foreign Income Test (≥95%)

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Active Business Test (≥90%)

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Formula Explanation

For a corporation to qualify as a domestic subsidiary under IRC § 407, it must satisfy ALL three of the following conditions:

1. Ownership Test: At least 80% of its voting stock must be owned by another domestic (U.S.) corporation.
2. Foreign Income Test: At least 95% of its gross income (over a 3-year period) must come from sources outside the United States.
3. Active Business Test: At least 90% of its gross income (over the same period) must be from the active conduct of a trade or business.

Summary of IRC § 407 Requirements

Requirement	Threshold	Your Input	Status
Parent Ownership	≥ 80%	80%
Foreign-Source Income	≥ 95%	95%
Active Business Income	≥ 90%	90%

What is the 407 Rate?

The term “407 rate” is shorthand for the set of percentage-based criteria defined in 26 U.S. Code § 407. It’s not a single rate, but rather a three-part test a corporation must pass to be classified as a “domestic subsidiary” for specific U.S. tax purposes. This classification is primarily for retirement benefits. It allows U.S. citizens and residents working for this subsidiary abroad to be treated as employees of the U.S. parent company, making them eligible for its 401(k), pension, or other qualified plans. Using a 407 rate calculator is the easiest way to check these thresholds.

This status is highly beneficial for multinational corporations looking to offer competitive retirement benefits to their U.S. expatriate workforce, ensuring they are not disadvantaged by working for an overseas arm of the company. A common misconception is that this applies to any foreign subsidiary; however, the rules are very strict, and the entity must be a U.S.-chartered corporation that meets the specific income tests outlined in the law. Our 407 rate calculator simplifies this complex check.

407 Rate Formula and Mathematical Explanation

The “formula” for the 407 rate is a logical conjunction (an “AND” condition) of three separate tests. The subsidiary must meet every single test to qualify. The failure of even one test results in disqualification.

1. IsOwnershipMet = (ParentOwnership ≥ 80%)
2. IsForeignIncomeMet = (ForeignSourceIncome ≥ 95%)
3. IsActiveBusinessMet = (ActiveBusinessIncome ≥ 90%)
4. Final Qualification = IsOwnershipMet AND IsForeignIncomeMet AND IsActiveBusinessMet

Each component of this formula is a simple comparison, but together they form a strict barrier. The purpose is to ensure that the subsidiary is genuinely a foreign-operating arm of the U.S. parent and not just a holding company or a domestic-focused business. The accurate use of a 407 rate calculator is essential for proper corporate planning.

407 Rate Calculator Variables

Variable	Meaning	Unit	Typical Range
Parent Ownership	Percentage of voting stock held by the U.S. parent.	%	0-100%
Foreign-Source Income	Percentage of gross income from non-U.S. sources over 3 years.	%	0-100%
Active Business Income	Percentage of gross income from active business operations.	%	0-100%

Practical Examples (Real-World Use Cases)

Understanding how the 407 rate calculator works in practice is key. Let’s explore two scenarios.

Example 1: The Qualifying Subsidiary

Global Tech Inc., a Delaware corporation, owns 100% of the voting stock of “Global Tech Europe, Inc.”, which is also a U.S. corporation but operates exclusively in Germany. Over the last three years, Global Tech Europe had the following income profile:

• Parent Ownership: 100%
• Foreign-Source Income: 98% (all revenue came from German clients)
• Active Business Income: 96% (income from consulting services, with 2% from passive interest)

Result: When these numbers are entered into the 407 rate calculator, the subsidiary qualifies. It passes the 80% ownership test, the 95% foreign income test, and the 90% active business test. Therefore, U.S. employees at Global Tech Europe can join Global Tech Inc.’s 401(k) plan.

Example 2: The Non-Qualifying Subsidiary

USA Parts Corp. owns 85% of “USA Parts Canada, Inc.”, a U.S. corporation. It primarily sells auto parts in Canada but also has a significant distribution hub in Buffalo, NY, that serves U.S. clients.

• Parent Ownership: 85%
• Foreign-Source Income: 70% (30% of its income came from the Buffalo hub serving U.S. clients)
• Active Business Income: 99%

Result: Despite passing the ownership and active business tests, the subsidiary does not qualify. Its foreign-source income is only 70%, which is well below the 95% threshold required by the 407 rate test. The 407 rate calculator would clearly show a failure on the second criterion, making the company ineligible for this special tax treatment. You can find more information on international tax considerations with our {related_keywords_0} guide.

How to Use This 407 Rate Calculator

Using our intuitive 407 rate calculator is a straightforward process. Follow these steps to get an accurate assessment of your subsidiary’s status.

1. Enter Ownership Percentage: In the first field, input the percentage of the subsidiary’s voting stock owned by the U.S. parent company.
2. Enter Foreign Income Percentage: In the second field, determine the percentage of the subsidiary’s gross income over the last three years that was sourced outside the United States. Our {related_keywords_1} article can help you define income sources.
3. Enter Active Business Income: In the third field, input the percentage of gross income from the active conduct of a business (e.g., sales, services) as opposed to passive income (e.g., interest, some royalties).
4. Review the Results: The calculator will instantly update. The primary result shows “Qualifies” or “Does Not Qualify”. The intermediate results and summary table show exactly which tests were passed or failed. The dynamic chart also provides a visual comparison. This powerful analysis provided by the 407 rate calculator is crucial for compliance.

Key Factors That Affect 407 Rate Results

Several factors can influence the outcome of a 407 rate calculator analysis. Corporations must manage these carefully.

• Corporate Structure: The most fundamental factor. The subsidiary MUST be a domestic U.S. corporation, and the parent must own at least 80% of its voting stock. A change in ownership structure could immediately disqualify the entity.
• Sources of Revenue: Diligent accounting is needed to separate U.S. and foreign-source income. A few large U.S.-based sales could tip the balance and cause a failure of the 95% foreign income test.
• Nature of Income: Differentiating between active and passive income is critical. Relying too heavily on income from investments or certain licensing agreements could jeopardize the 90% active business income requirement. For more details on this, see our article on {related_keywords_2}.
• The 3-Year Look-Back Period: The income tests are based on a three-year rolling average. A single bad year might not cause a failure if the prior two years were strong, but a consistent trend of declining foreign or active income is a major red flag.
• Mergers and Acquisitions: Acquiring another company can drastically alter the income composition of the subsidiary, requiring a new analysis with the 407 rate calculator.
• Tax Treaty Provisions: While IRC § 407 is a U.S. law, tax treaties with the host country can affect how income is sourced, which indirectly impacts the calculation. Always consult our {related_keywords_3} guide when operating internationally.

Frequently Asked Questions (FAQ)

1. What happens if a subsidiary fails the 407 rate test?

If a subsidiary fails the test, U.S. employees working for it cannot be covered under the U.S. parent company’s qualified retirement plans under this specific provision. The corporation would need to find alternative ways to provide retirement benefits, which might be less favorable or more complex.

2. Can the 407 rate calculator be used for foreign-chartered subsidiaries?

No. A critical requirement of IRC § 407 is that the subsidiary itself must be a “domestic corporation” (i.e., incorporated in the United States). The calculator is not applicable for subsidiaries chartered in other countries (e.g., a UK Limited or German GmbH). Those fall under different rules, such as IRC § 406.

3. How often should I use the 407 rate calculator?

You should perform the analysis annually, or whenever a significant corporate event occurs (like a merger, a major shift in business strategy, or a change in ownership). Since the test uses a 3-year look-back, continuous monitoring is essential for ensuring ongoing compliance.

4. What if the subsidiary has no gross income?

The law states that if the subsidiary has no gross income for the 3-year period, the tests are considered satisfied if it’s reasonable to anticipate they will be met in the first future year the corporation has gross income. This is for newly formed subsidiaries.

5. Is the 80% ownership test based on value or voting power?

The statute specifies “80 percent or more of the outstanding voting stock“. This means the test is based on control via voting rights, not the total market value of the stock. Using the 407 rate calculator requires inputting this specific metric.

6. Does this affect healthcare or other benefits?

IRC § 407 is specifically for deferred compensation plans like pensions, profit-sharing plans (including 401(k)s), and stock bonus plans. It does not directly govern other types of employee benefits like healthcare or life insurance.

7. Can a subsidiary qualify in one year but not the next?

Absolutely. Qualification is not permanent. A shift in the income mix (e.g., taking on a large US-based project) could cause the foreign-income percentage to drop below 95%, leading to disqualification for that period. This is why regular use of a 407 rate calculator is a best practice. More information is available in our {related_keywords_4} analysis.

8. Where does the term “407 rate” come from?

It’s an industry shorthand that refers directly to the section of the law that defines the rules: Internal Revenue Code § 407. While the law itself doesn’t use the term “407 rate”, it’s a convenient way for tax professionals to refer to this specific set of qualification criteria.

Related Tools and Internal Resources

For further financial planning and analysis, explore our other expert calculators and guides.

• {related_keywords_0}: A guide to understanding tax implications when operating in multiple countries.
• {related_keywords_1}: Learn how to classify income for tax purposes, a critical step for the 407 rate calculator.
• {related_keywords_2}: An in-depth look at what constitutes active vs. passive income for business tax filings.
• {related_keywords_3}: Explore how international treaties can impact your corporate tax strategy.
• {related_keywords_4}: An annual checklist for maintaining corporate tax compliance.
• {related_keywords_5}: A calculator for a different but related tax provision.