2026 Retirement Contribution Limits: 401k, IRA, and SEP

2026 Retirement Contribution Limits: 401k, IRA, and SEP

Jennifer and I sat down for our annual "financial date night" in January. Olivia was at a sleepover. Ethan was—well, Ethan was supposed to be asleep, but he kept wandering out asking for water. Cooper sprawled across the kitchen floor, blocking traffic. Romantic? No. Necessary? Absolutely.

Retirement contributions are the single most powerful tax reduction tool for most taxpayers. And every year, the limits change. Here is what 2026 looks like, straight from IRS Notice 2025-67.

401(k), 403(b), 457, TSP: $24,500

The employee contribution limit for 2026 is $24,500, up from $23,500 in 2025. This applies to 401(k), 403(b), most governmental 457 plans, and the federal Thrift Savings Plan.

If you are 50 or older, the catch-up contribution is $8,000, bringing your total to $32,500. But here is where it gets interesting: if you are 60, 61, 62, or 63, the SECURE 2.0 Act gives you a SUPER catch-up of $11,250 instead of $8,000. Total: $35,750.

This is huge for late-career savers. I have a client who turned 60 in January. He maxed out at $35,750. At a 24% federal bracket, that is $8,580 in immediate tax savings. Plus Texas has no state income tax, so no state-level savings, but still. Eight thousand dollars back in his pocket this year, growing tax-deferred for decades.

IRA: $7,500 ($8,600 if 50+)

The IRA contribution limit for 2026 increased to $7,500 from $7,000. The catch-up for 50+ is $1,100 (up from $1,000), bringing the total to $8,600.

Traditional IRA deductibility depends on whether you or your spouse have a workplace retirement plan. If you do, the phase-out range for 2026 is $81,000-$91,000 for singles and $129,000-$149,000 for joint filers. Above these ranges, your contribution is non-deductible (but you can still contribute—consider a backdoor Roth strategy).

Roth IRA eligibility phases out at $153,000-$168,000 for singles and $242,000-$252,000 for joint filers. Above that, direct Roth contributions are off the table. Backdoor Roth is still an option, though Congress has debated closing that loophole for years.

SEP IRA: Up to $70,000

For self-employed individuals and small business owners, SEP IRA contributions are limited to 25% of compensation, up to $70,000 for 2026. This is a powerful tool. A sole proprietor netting $200,000 can contribute $50,000 (25% of net after self-employment tax deduction). At a 32% bracket, that is $16,000 in federal tax savings.

I set up SEPs for most of my self-employed clients. Simple. No annual filing requirements like a 401(k). Contributions are due by the tax filing deadline plus extensions. Flexibility if your income is variable.

SIMPLE IRA: $17,000 ($21,000 if 50+)

SIMPLE plans—common in small businesses with 100 or fewer employees—have a 2026 limit of $17,000, up from $16,500. Catch-up for 50+: $4,000 (total $21,000). For certain applicable SIMPLE plans, the limit is $18,100 with a $5,250 catch-up for ages 60-63.

The Tax Savings Math

Every dollar contributed to a traditional 401(k), IRA, or SEP reduces your taxable income dollar-for-dollar. If you are in the 22% bracket, a $10,000 contribution saves $2,200 in federal tax. In the 32% bracket, it saves $3,200. Plus state savings if your state has income tax.

But—and this is important—you will pay tax when you withdraw in retirement. The bet is that your retirement tax rate will be lower than your current rate. For most people, it is. For high-savers with large retirement balances, it might not be. Roth contributions (no immediate deduction, tax-free growth) might make sense if you expect to be in the same or higher bracket in retirement.

I actually covered the OBBBA changes recently—including how retirement contributions interact with the new tax brackets and QBI deductions. If you are trying to optimize your entire tax picture, not just retirement, that article ties everything together.

The Saver's Credit

Low-to-moderate income workers can get a tax CREDIT (not deduction) for retirement contributions. For 2026, the income limits are $40,250 (single), $60,375 (head of household), and $80,500 (joint). The credit is 10%, 20%, or 50% of contributions up to $2,000 per person.

A married couple earning $50,000 who each contribute $2,000 to an IRA gets a $2,000 tax credit. That is a 50% immediate return on investment, plus the deduction savings. If you qualify, this is free money. Do not leave it.

Employer Match: The Guaranteed Return

If your employer offers a 401(k) match, contribute at least enough to get the full match before anything else. A 50% match up to 6% of salary is a 50% immediate return. No investment guarantees that. I have seen clients skip the match to pay down 4% student loans. Bad math. Take the match.

The "Max Out" Decision

Should you max out your 401(k)? If you can afford it, generally yes. But consider: do you have high-interest debt (above 7%)? Pay that first. Do you have an adequate emergency fund (3-6 months expenses)? Build that first. Are you saving for a near-term goal (house down payment in 2 years)? Taxable savings might be better.

I run a cash flow analysis for every client before recommending max-out. Some people contribute $24,500 and then rack up credit card debt at 22% APR. That is backwards. Math first, emotion second.

Required Minimum Distributions (RMDs)

Starting in 2023, RMDs begin at age 73. By 2033, they will start at age 75 under current law. If you are 50 now, plan for RMDs at 75. That gives you 25 years of tax-deferred growth. The math is extraordinary.

A $24,500 contribution at age 50, growing at 7% for 25 years, becomes $132,800. Tax-deferred. If you are in the 32% bracket now and 22% in retirement, you saved $7,840 in taxes over the contribution period and will pay $29,216 in taxes on withdrawal. Net savings: substantial, but the real win is the tax-deferred growth.

Roth Conversions: The Timing Game

If you have a low-income year—job loss, sabbatical, early retirement before RMDs—consider Roth conversions. Convert traditional IRA/401(k) to Roth, pay tax at your low current rate, and let it grow tax-free forever. No RMDs on Roth IRAs (though Roth 401(k)s have RMDs unless rolled to Roth IRA).

I have a client who retired at 62 with $800,000 in traditional 401(k) and $200,000 in taxable savings. He lives on taxable savings for five years, keeping income near zero. Each year, he converts $50,000 to Roth, paying tax at 10-12% bracket. Over five years, he converts $250,000 at an average 11% rate = $27,500 tax. If he waited until RMDs at 73, that same $250,000 would be taxed at 22% = $55,000 tax. Savings: $27,500. Plus no RMDs on the Roth portion.

— Michael Harrison, CPA | Austin, TX | michael@taxcalctool.org

The Backdoor Roth: A Legal Loophole

If your income exceeds Roth IRA limits ($153,000-$168,000 single, $242,000-$252,000 joint), you cannot contribute directly to a Roth IRA. But you can contribute to a traditional IRA (non-deductible at your income level), then immediately convert to Roth. This is the "backdoor Roth."

The conversion is taxable only on any earnings between contribution and conversion. If you convert immediately, earnings are near zero. Tax on conversion: near zero. Result: tax-free Roth contributions despite income limits.

Caveat: If you have existing traditional IRA balances (deductible contributions from prior years), the pro-rata rule applies. You cannot convert just the non-deductible portion. The conversion is taxed proportionally based on your total traditional IRA balance.

Example: You have $50,000 in traditional IRAs (all deductible contributions). You contribute $7,500 non-deductible. You convert $7,500 to Roth. Pro-rata rule: $50,000 deductible / $57,500 total = 87% taxable. Taxable conversion: $6,525. Tax at 32%: $2,088. Not the tax-free conversion you expected.

Solution: Roll existing traditional IRAs into your 401(k) before doing backdoor Roth. 401(k)s are not counted in the pro-rata calculation. Empty your traditional IRA first. Then contribute non-deductible. Then convert. Clean.

I do this for 10-15 clients annually. Roll existing IRAs to 401(k) in December. Contribute non-deductible IRA in January. Convert to Roth immediately. Tax-free Roth contribution. Legal. Common. Smart.

The Mega Backdoor Roth: For High Savers

Some 401(k) plans allow after-tax contributions beyond the $24,500 pre-tax/Roth limit. If your plan allows it, you can contribute up to $70,000 total (including employer match) in 2026. The portion above $24,500 is after-tax. You can then convert those after-tax contributions to Roth—either within the plan (in-plan Roth conversion) or by rolling to a Roth IRA.

Example: You max out 401(k) at $24,500. Your employer matches $6,000. Total: $30,500. You contribute an additional $39,500 after-tax. Total: $70,000. You convert the $39,500 after-tax to Roth. Earnings on the after-tax portion are taxable, but if you convert immediately, earnings are minimal.

Result: $24,500 pre-tax/Roth + $39,500 Roth = $64,000 in retirement accounts. Tax-free growth on $39,500. This is the mega backdoor Roth. Not all plans allow it. Check with your plan administrator.

I have two clients whose employers offer this. Both max it out. One is 35. If he does this for 30 years at $39,500 annually with 7% growth, the after-tax Roth portion alone grows to $4.2 million. Tax-free. "Best benefit I never knew about," he told me.

Retirement Account Fees: The Hidden Drag

Fees matter. A 1% annual fee on a $500,000 401(k) costs $5,000 per year. Over 20 years, that is $100,000 in direct fees, plus lost growth on those fees. At 7% growth, the total cost of a 1% fee is roughly $280,000 over 20 years.

I review 401(k) fees for every client. Average expense ratios: index funds 0.03-0.20%. Target-date funds 0.50-0.80%. Actively managed funds 0.75-1.50%. Administrative fees: $25-100 annually. Some employers subsidize these. Some pass them to employees.

If your 401(k) has high-fee options, consider: contributing enough to get the match, then maxing out an IRA with lower-fee options, then returning to 401(k) if you still have capacity. Or lobbying your employer to add lower-fee options. Or rolling old 401(k)s to IRAs with better choices.

I had a client with a 401(k) charging 1.2% in fund fees plus $150 annual administrative fee. On his $340,000 balance, that was $4,230 annually. We rolled his old 401(k) to a Fidelity IRA with 0.03% index funds. Annual fee: $102. Savings: $4,128 per year. Over 20 years: roughly $230,000 with growth.

The Social Security Tax Torpedo

This is advanced, but worth knowing. Social Security benefits can be taxable. Up to 85% of benefits are included in income if your "combined income" (AGI + nontaxable interest + half of Social Security) exceeds $34,000 single / $44,000 joint.

The tax torpedo: as your income rises into the Social Security taxation zone, your marginal tax rate effectively increases. A dollar of IRA withdrawal might push 85 cents of Social Security into taxable income. Result: you are taxed on $1.85 of income for every $1 withdrawn. Effective marginal rate: 1.85x your nominal rate.

At the 22% bracket, effective rate on that dollar: 40.7%. At 12% bracket: 22.2%. This makes Roth withdrawals in retirement extremely valuable—they do not count toward the Social Security taxation calculation.

I run retirement tax projections for clients approaching age 62. If they have large traditional 401(k)/IRA balances and modest Roth balances, we often do Roth conversions in their 60s (before RMDs and Social Security) to reduce future torpedo exposure.

A client with $800,000 traditional, $100,000 Roth, and $40,000 annual Social Security benefit faced an effective 40% marginal rate on traditional withdrawals. We converted $50,000 annually from age 62-70. Paid tax at 12-22% bracket. Reduced traditional balance to $400,000. Increased Roth to $500,000. At 70, his effective rate on traditional withdrawals dropped to 22%. Roth withdrawals: 0%. Social Security tax: minimal. Net lifetime tax savings: roughly $85,000.

The Spousal IRA: For Non-Working Spouses

If one spouse works and the other does not, the non-working spouse can still contribute to an IRA based on the working spouse's income. This is the spousal IRA. For 2026: $7,500 limit ($8,600 if 50+).

This is powerful for stay-at-home parents, caregivers, or spouses between jobs. A couple where one earns $100,000 can contribute $7,500 to each IRA—$15,000 total. At 22% bracket: $3,300 in tax savings. Plus tax-deferred growth for decades.

I set up spousal IRAs for every couple where one spouse is not working. "I did not know I could do this," is the most common response. Now you know.

— Michael Harrison, CPA | Austin, TX | michael@taxcalctool.org