Updated 2026-03-20

401(k) Glossary: 50+ Retirement Terms Defined

Plain-language definitions of 401(k) and retirement plan terms. Vesting, RMD, QDRO, rollover, catch-up, and more.

What You Will Learn

This guide covers everything you need to know about 401(k) glossary: 50+ retirement terms defined. We break down the rules, compare your options, and provide tools to help you make informed decisions about your retirement savings.

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Pavlo Pyskunov

Pavlo Pyskunov

Managing Director & Investment Fund Director

Pavlo Pyskunov analyzes employer-sponsored retirement plans using IRS publications and DOL Form 5500 filings, helping workers maximize their 401(k) savings through data-driven guidance.

Last updated: 2026-03-20

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