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20 August 2026

Ask The Experts: Are Mandatory Contributions Subject To The Section 415 Additions Limit?

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Groom Law Group

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Groom Law is the nation’s preeminent benefits, retirement, and health care law firm. We built our success over decades of solving complex ERISA/employee benefits challenges in the public and private sectors, providing innovative legal solutions, value, and true partnership to our clients every step of the way.
Legal experts from Groom Law Group examine whether mandatory contributions to retirement plans fall under the Internal Revenue Code Section 415 annual additions limit, clarifying the distinction between this limit and the Section 402(g) elective deferral limit. The analysis explores which types of contributions are excluded from annual additions calculations and how mandatory contributions are specifically treated under current tax law.
United States Employment and HR
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In the latest installment of PLANSPONSOR‘s Ask the Experts series, senior counsel Kimberly Boberg, principal Kelly Geloneck, associate Emily Gerard, and principal David Levine address whether mandatory contributions are subject to the Internal Revenue Code Section 415 annual additions limit. Their response explains how mandatory contributions are treated under Section 415 and distinguishes the limit from the Section 402(g) elective deferral limit.

The authors note that while mandatory contributions are not subject to the Section 402(g) elective deferral limit, they generally are subject to the Section 415 annual additions limit. Although certain amounts, including rollover contributions and eligible catch-up contributions, are excluded from annual additions, mandatory contributions are not among those exclusions.

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The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.

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