401(k) Contribution Limits 2026: Everything You Need to Know

1. 2026 401(k) Contribution Limits at a Glance

The IRS sets two separate limits. The employee deferral limit (what comes out of your paycheck) and the Section 415(c) total limit (everything combined, including employer). These are the 2026 figures per IRS Notice 2025-70.

† Catch-up contributions for ages 50+ are exempt from the Section 415(c) total limit per IRC §414(v)(3)(A). The $47,500 after-tax space is calculated as $72,000 total minus $24,500 employee deferral. See the IRA contribution limits guide for Roth IRA income restrictions.

2. Year-Over-Year Comparison: 2022–2026

401(k) limits increase roughly $500/year with inflation adjustments based on the Consumer Price Index (CPI-W). The IRS announces the following year’s limits each October or November.

The standard catch-up for ages 50–59 and 64+ increased from $7,500 to $8,000 in 2026. The super catch-up for ages 60–63 ($11,250) was introduced in 2025 under SECURE 2.0 and remains the same in 2026.

3. Employee Deferral vs. Total Limit: What’s the Difference?

The most common source of confusion about 401(k) limits is the difference between two separate ceilings that apply at the same time.

Here’s a practical example: if your employer matches 4% of your $100,000 salary, that’s $4,000 in employer contributions. You can still contribute the full $24,500 from your paycheck. Combined: $28,500, well under the $72,000 total ceiling. The $4,000 doesn’t reduce your personal $24,500 limit.

Where this matters for business owners: S-Corp owners and solo 401(k) holders can add employer profit-sharing contributions on top of their $24,500 deferral, stacking toward $72,000. Learn more in the 401(k) employer match rules guide.

4. Catch-Up Contributions: Age 50+ and the SECURE 2.0 Super Catch-Up

Congress added catch-up contributions to help workers in their 50s and 60s accelerate savings before retirement. In 2026, there are two different catch-up amounts depending on your age.

Standard Catch-Up (Ages 50–59 and 64+)

If you’re 50 or older — but not yet 64, or already past 63 — you can contribute an additional $8,000 on top of the $24,500 base. That brings your personal maximum to $32,500 in 2026. Your employer can still add profit sharing and match on top of that.

SECURE 2.0 Mandatory Roth Catch-Up (High Earners)

Starting in 2026, if you earned more than $150,000 in prior-year wages subject to FICA (i.e., your 2025 W-2 Social Security wages), any catch-up contributions you make must be designated as Roth. You can’t make pre-tax catch-up contributions.

This applies to all catch-up-eligible participants — both the standard $8,000 and the super catch-up $11,250. Plan administrators must now track this threshold and route catch-up amounts accordingly. If your plan doesn’t support Roth catch-up, high earners can’t make catch-up contributions at all until the plan is updated.

The base $24,500 deferral can still be traditional (pre-tax) or Roth. The mandatory Roth rule applies only to the catch-up portion for $150K+ earners.

5. Does Employer Match Count Toward Your 401(k) Limit?

Short answer: Your employer’s match doesn’t count toward your $24,500 employee limit. It does count toward the $72,000 total limit.

The $24,500 (or $32,500/$35,750 with catch-up) is the employee deferral limit — what comes out of your paycheck. Employer contributions are categorized separately under IRC Section 415(c), which sets the $72,000 combined ceiling.

For most W-2 employees, this distinction is theoretical — employer contributions rarely push anyone near $72,000. Where it matters is for high-income employees at companies with generous profit sharing, and for business owners who control their own plans.

For the full breakdown — including vesting schedules, common match formulas, and S-Corp owner rules — see the 401(k) Employer Match Rules 2026 guide.

6. Solo 401(k) for Self-Employed: Double Contribution Power

If you’re self-employed with no full-time employees, a solo 401(k) lets you wear two hats — employee and employer — in the same plan. That means two contribution sources stacking toward the same $72,000 ceiling.

How It Works

• Employee deferral: Up to $24,500 (Roth or traditional) from your self-employment compensation
• Employer profit sharing: Up to 25% of compensation (20% for sole proprietors after the self-employment tax adjustment)
• Total: Both stack toward $72,000 (or $80,000–$83,250 with catch-up)

Standard 401(k) providers (Fidelity, Schwab, Vanguard) support solo 401(k) plans with employee and employer contributions. After-tax contributions for the mega backdoor Roth strategy require specific plan documents — most standard providers don’t support this without a custom plan. See the complete solo 401(k) Roth guide for provider options and setup.

S-Corp owners have a related retirement planning lever: the interplay between W-2 salary level and employer profit sharing. A higher W-2 salary increases both the employer contribution base and Social Security wages — which affects the SECURE 2.0 mandatory Roth catch-up threshold. This is worth reviewing with a tax advisor. See S-Corporation tax planning for the full S-Corp context.

7. Roth 401(k) vs. Traditional: Which Should You Choose?

Both Roth and traditional 401(k) contributions share the same $24,500 limit. The difference is timing: traditional contributions reduce your taxable income now and are taxed in retirement; Roth contributions are after-tax now and grow tax-free.

Quick Decision Framework

• High bracket now, lower in retirement: Traditional often wins. The deduction reduces your current tax liability at a higher rate.
• Lower bracket now, or expect tax rates to rise: Roth wins. Pay today’s rate on the contribution; withdrawals are free in retirement.
• Business owner with variable income: A split strategy — some traditional, some Roth — provides flexibility to manage retirement income later.
• High earner over $150,000 (FICA wages): Your catch-up contributions must be Roth in 2026 regardless of preference.

For the full comparison — including RMD implications, employer match treatment, and business owner-specific tax scenarios — see the Roth 401(k) vs. Traditional 401(k) guide.

8. Mega Backdoor Roth: Using the After-Tax Space

If you’ve maxed your $24,500 employee deferral and your employer has contributed their share, there may still be room between your current contributions and the $72,000 total ceiling. That gap — up to $47,500 in 2026 — can be filled with after-tax contributions and converted to Roth. This is the mega backdoor Roth strategy.

It requires a 401(k) plan that explicitly supports after-tax contributions and in-plan Roth conversions (or distributions for rollover). Not all plans allow this. Solo 401(k) plans can be customized to include it; most standard employer plans don’t. Business owners with their own plans have the most flexibility here.

The after-tax contribution space is $47,500 regardless of catch-up eligibility. Per IRC §414(v)(3)(A), catch-up contributions are exempt from the §415(c) total limit — so the $47,500 represents the base math ($72,000 total minus $24,500 deferral).

For the complete strategy guide, eligibility checklist, and plan setup steps, see The Mega Backdoor Roth: 2026 Complete Guide. For a direct comparison with standard backdoor Roth, see backdoor Roth vs. mega backdoor Roth. The after-tax mechanics are covered in depth at after-tax 401(k) contributions.

9. Highly Compensated Employees: What Business Owners Need to Know

The IRS uses two thresholds to define employees who receive special 401(k) scrutiny:

• Highly Compensated Employee (HCE): $160,000+ in prior-year compensation, or more than 5% ownership at any time during the current or prior year
• Key Employee: More than 5% ownership, more than 1% ownership with compensation over $230,000, or an officer earning over $230,000

Why HCE Status Matters

401(k) plans must pass non-discrimination tests — primarily the Actual Deferral Percentage (ADP) and Actual Contribution Percentage (ACP) tests. These compare the deferral rates of HCEs against non-HCEs. If HCEs defer too much relative to the rest of the workforce, the IRS may require the plan to return contributions or apply corrective measures.

For business owners, this is relevant in two ways: (1) if you’re the owner and highly compensated, your plan must still pass tests on behalf of other employees, and (2) a safe harbor 401(k) plan design eliminates ADP/ACP testing entirely if the employer meets certain match or contribution requirements. Many small business owners who want to maximize contributions use safe harbor designs for this reason.

HCE testing also determines whether profit sharing contributions are limited. Working with a retirement-focused CPA can help structure your plan to maximize owner contributions within these rules.

10. What to Do Next: Your Situation, Your Next Step

W-2 Employee

Log into your employer’s 401(k) portal (or ask HR) and check your current contribution percentage. If you’re not at $24,500 annually, calculate the paycheck deduction needed to get there. If you’re over 50, confirm whether your plan supports catch-up contributions — most do, but you usually need to opt in explicitly. Review whether Roth or traditional matches your current bracket.

Business Owner (S-Corp or C-Corp)

The interaction between your W-2 salary, employer profit sharing, and SECURE 2.0 mandatory Roth rules warrants a dedicated review. If you’re stacking toward the $72,000 ceiling and considering after-tax contributions or a safe harbor design, that’s a conversation worth having before year-end. SDO CPA specializes in S-Corp retirement planning — the numbers are specific to your compensation structure.

Self-Employed / Freelancer

If you don’t have a solo 401(k) yet, setting one up before year-end (typically by December 31 for most providers) lets you fund it for the full year. If you already have one, verify your plan document allows both Roth deferrals and employer profit sharing. Contact your plan provider to confirm contribution deadlines — S-Corp owners typically have until the business tax return due date (with extensions) to fund employer contributions.

For the mechanics, see Solo 401(k) Roth: Complete Guide for Self-Employed.

11. Frequently Asked Questions

• What is the 401(k) contribution limit for 2026?

  The 2026 employee deferral limit is $24,500. If you’re age 50–59 or 64+, you can add an $8,000 catch-up for a total of $32,500. If you’re age 60–63, the SECURE 2.0 super catch-up is $11,250, for a total of $35,750. The combined limit including all employer contributions is $72,000 (or $80,000/$83,250 with catch-up).

• Does employer match count toward the 401(k) limit?

  Employer match doesn’t count toward your $24,500 employee deferral limit — you can still contribute the full amount regardless of what your employer adds. It does count toward the $72,000 Section 415(c) total limit. For most employees, this distinction is academic since employer contributions rarely push the total anywhere near $72,000.

• What is the catch-up contribution limit for 2026?

  For ages 50–59 and 64+, the catch-up limit is $8,000 in 2026 (up from $7,500 in 2025). For ages 60–63, the SECURE 2.0 super catch-up is $11,250. Note: if you earned $150,000+ in prior-year FICA wages, your catch-up must be designated as Roth contributions starting in 2026.

• When do 401(k) limits increase each year?

  The IRS announces the following year’s retirement plan limits each October or November, typically in an IRS Notice. Adjustments are based on inflation (CPI-W) and rounded to the nearest $500. The 2026 limits were announced in IRS Notice 2025-70. The 2027 limits will be announced in fall 2026.

• What is the HCE limit for 401(k) in 2026?

  In 2026, you’re classified as a Highly Compensated Employee (HCE) if you earned $160,000+ in 2025 compensation, or if you own more than 5% of the company at any time during the current or prior year. HCEs are subject to non-discrimination testing (ADP/ACP tests) that may limit how much they can defer relative to non-HCEs.

• Can I contribute to both a 401(k) and an IRA in 2026?

  Yes. The 401(k) employee limit ($24,500) is completely separate from the IRA contribution limit ($7,500 for under-50, or $8,600 with the $1,100 catch-up for age 50+). However, if you or your spouse have a workplace retirement plan, your ability to deduct traditional IRA contributions phases out at certain income levels. Roth IRA eligibility also phases out at higher incomes. See the Roth IRA contribution limits guide for phase-out details.

• What is the total 401(k) limit including employer contributions for 2026?

  The total limit under IRC Section 415(c) is $72,000 for 2026. This includes employee deferrals, employer match, employer profit sharing, and any after-tax contributions. With the standard catch-up, the total rises to $80,000. With the SECURE 2.0 super catch-up for ages 60–63, it’s $83,250. Catch-up contributions themselves are exempt from the $72,000 ceiling per IRC §414(v).

• How does SECURE 2.0 affect 401(k) catch-up contributions?

  SECURE 2.0 made two changes to catch-up contributions effective 2026: (1) It created a super catch-up of $11,250 for participants aged 60–63 (up from the standard $8,000). (2) It requires that catch-up contributions be designated as Roth for participants who earned $150,000+ in prior-year FICA wages. Plan administrators must build in this routing logic. High earners whose plans haven’t been updated may be temporarily blocked from catch-up contributions until the plan adds Roth catch-up capability.

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