401(k) vs IRA

1. Contribution Limits: How Much You Can Save

401(k) plans have significantly higher contribution limits: $23,500 for 2026 if you're under 50, with an additional $7,500 "catch-up" contribution if you're 50 or older, totaling $31,000. These limits are per person, not per employer — if you work multiple jobs with 401(k) plans, the limit applies across all accounts combined. Employer matching contributions don't count toward your personal limit, so total contributions (employee + employer) can reach $69,000 in 2026.

IRA limits are much lower: $7,000 for 2026 if you're under 50, with a $1,000 catch-up contribution for those 50+, totaling $8,000. This limit applies to all IRA contributions combined — if you have both a Traditional IRA and a Roth IRA, the $7,000 limit is shared between them. The lower limit reflects that IRAs are individual accounts without employer support. Despite the lower limit, IRAs still offer significant tax-advantaged growth over decades of saving.

2. Employer Matching: Free Money in 401(k) Plans

401(k) plans often include employer matching contributions, which is essentially free money added to your retirement savings. Common matching formulas include "dollar-for-dollar up to 3%" (employer matches 100% of your contributions up to 3% of salary) or "50 cents per dollar up to 6%" (employer matches 50% up to 6% of salary, contributing 3%). Some employers offer profit-sharing contributions regardless of your contribution. This matching can add thousands of dollars annually to your retirement savings at zero cost to you.

IRAs have no employer matching since they're individual accounts not tied to your workplace. You fund an IRA entirely with your own contributions. While this means no free money, it also means complete independence — your IRA isn't affected by job changes, and you control every aspect of the account. The lack of matching is the primary reason financial advisors recommend contributing to your 401(k) up to the match before maxing out an IRA: you want to capture all available free money first.

3. Investment Flexibility and Options

401(k) plans offer limited investment options chosen by your employer and the plan administrator. Most plans offer 10-30 mutual funds across different asset classes (stocks, bonds, target-date funds, international funds). You can only invest in what the plan offers — if your plan doesn't include a particular fund or asset class, you're out of luck. Some plans have high-fee funds, limited international exposure, or lack index funds. You have no control over the investment menu; your employer makes those decisions.

IRAs offer virtually unlimited investment options. You can invest in individual stocks, bonds, ETFs, mutual funds, REITs, options, and more. You can choose low-cost index funds with expense ratios as low as 0.03%, invest in specific sectors or international markets, or build a custom portfolio matching your exact preferences. This flexibility is invaluable for experienced investors who want control. However, unlimited choice can be overwhelming for beginners, and it requires more active management than a simple 401(k) target-date fund.

4. Tax Treatment: Traditional vs Roth Options

401(k) Traditional: Contributions are pre-tax (reduce your taxable income now), investments grow tax-deferred, and withdrawals in retirement are taxed as ordinary income. If you contribute $10,000, you save $2,200-$3,700 in taxes immediately (depending on your tax bracket). This is ideal if you expect to be in a lower tax bracket in retirement. Required Minimum Distributions (RMDs) begin at age 73, forcing you to start withdrawing and paying taxes.

401(k) Roth: Contributions are after-tax (no immediate tax deduction), but all growth and withdrawals in retirement are completely tax-free. If you contribute $10,000, you pay taxes on it now, but if it grows to $100,000 by retirement, that entire $100,000 comes out tax-free. This is ideal for younger workers in lower tax brackets who expect to earn more later. No RMDs during your lifetime. Not all employers offer Roth 401(k) options — check your plan.

IRA Traditional: Contributions may be tax-deductible (reduces taxable income), but deductibility phases out at higher incomes if you or your spouse have a workplace retirement plan. For 2026, the phase-out begins at $77,000 (single) or $123,000 (married filing jointly) if covered by a workplace plan. Withdrawals are taxed as ordinary income, and RMDs begin at 73. Traditional IRAs work best for those who can deduct contributions and expect lower retirement tax brackets.

IRA Roth: Contributions are never tax-deductible, but qualified withdrawals are completely tax-free. Income limits apply: for 2026, the ability to contribute phases out between $146,000-$161,000 (single) or $230,000-$240,000 (married filing jointly). You can withdraw contributions anytime without penalty or taxes (only earnings face penalties before 59½). No RMDs ever. Roth IRAs are ideal for younger workers or those wanting tax diversification and flexibility.

5. Fees and Administrative Costs

401(k) plans often have higher fees including administrative costs (recordkeeping, compliance), plan management fees, and fund expense ratios. Small company plans may charge 1-2% in total annual fees, significantly reducing returns over time. Large company plans negotiate better rates, sometimes offering institutional-class funds with expense ratios under 0.05%. Check your plan's fee disclosure (required annually) to understand total costs. High fees can cost you hundreds of thousands in lost growth over a 40-year career.

IRAs typically have lower fees if you choose a low-cost broker like Vanguard, Fidelity, or Schwab. These brokers charge no account fees and offer index funds with expense ratios as low as 0.03-0.04%. You control the fees by selecting low-cost investments. However, some IRA providers charge annual account fees ($20-$50), inactivity fees, or commission-based advisors charge 1% or more. The key is shopping around and choosing low-cost options. Over time, minimizing fees is one of the most impactful decisions for building wealth.

6. Rollovers and Portability When Changing Jobs

401(k) accounts can create complexity when you change jobs. You have several options: (1) Leave the money in your old employer's plan (if allowed and balance exceeds $5,000), (2) Roll it over to your new employer's 401(k), (3) Roll it over to an IRA (most flexible), or (4) Cash out (worst option — taxes plus 10% penalty). Many people accumulate multiple old 401(k) accounts across different jobs, making it hard to track overall portfolio allocation and fees. Consolidation is usually wise.

IRAs are completely portable — they're yours regardless of employment. You never have to move an IRA when changing jobs; it simply stays with your chosen broker. This permanence simplifies long-term planning and portfolio management. You can roll old 401(k) accounts into your IRA when leaving jobs, consolidating everything in one place for easier management. The only exception is the "backdoor Roth IRA" strategy, where having a Traditional IRA balance can create tax complications.

❌ Mistake: Not contributing enough to get full employer match

Why it's wrong: Employer matching is free money with an instant 50-100% return on investment. Failing to contribute enough to get the full match is leaving thousands of dollars on the table annually — money that compounds for decades.

✅ Correct Approach: Always contribute at least enough to your 401(k) to capture the full employer match before contributing to an IRA or other accounts. If your employer matches 6%, contribute at least 6%. This is the highest-return investment available.

❌ Mistake: Cashing out 401(k) when changing jobs

Why it's wrong: Cashing out triggers immediate income taxes plus a 10% early withdrawal penalty (if under 59½). A $20,000 withdrawal becomes $13,000-$15,000 after taxes and penalties. Worse, you lose decades of tax-free compound growth — that $20,000 could grow to $150,000+ by retirement.

✅ Correct Approach: Roll your old 401(k) into your new employer's 401(k) or into an IRA when changing jobs. This preserves the tax-advantaged status and keeps your money growing for retirement. The rollover process is straightforward and typically takes 2-3 weeks.

❌ Mistake: Contributing to IRA before capturing 401(k) match

Why it's wrong: While IRAs often have better investment options, the employer match provides an instant return that outweighs any advantage from better fund choices. Prioritizing IRA contributions before capturing the full match sacrifices free money.

✅ Correct Approach: Follow the priority order: (1) Contribute to 401(k) up to full match, (2) Max out IRA, (3) Max out remaining 401(k) space. This strategy captures all free money first, then leverages the IRA's superior options, then uses remaining 401(k) capacity.

❌ Mistake: Ignoring 401(k) fees and investment options

Why it's wrong: Many people contribute to their 401(k) without ever checking fees or investment options. High fees (1-2% annually) can cost hundreds of thousands over a career. Bad investment choices (actively managed funds, wrong asset allocation) further reduce returns.

✅ Correct Approach: Review your 401(k)'s annual fee disclosure, check fund expense ratios, and select low-cost index funds when available. If your plan has terrible options, contribute only up to the employer match, then prioritize your IRA. Consider discussing better fund options with your HR department — employee feedback can improve plans.