Updated 2026-04-21
401(k) Contribution Deadline 2026: Key Dates and How to Max Out (+ Calculator)
Employee 401(k) deadline is December 31. Employer contribution deadline extends to tax filing date. Calculator included.
Key Takeaways
- Updated for 2026 IRS rules and contribution limits
- Covers eligibility requirements, deadlines, and tax implications
- Includes examples and step-by-step guidance
- Links to relevant calculators for personalized analysis
2026 Quick Reference
$24,500
2026 Deferral Limit
$72,000
Total 415(c) Limit
59½
Penalty-Free Age
73
RMD Start Age
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: 2026-04-21