Account deep-dives.
The tax-advantaged toolbox.
The existing /personal-finance/ page covers the standard 401(k) and Roth IRAIndividual Retirement Account (IRA)A retirement account with tax advantages and eligibility rules. Traditional IRA contributions may be deductible; taxable withdrawals generally enter income. Roth contributions use after-tax money, and qualified Roth withdrawals are tax-free.Full definition. This section covers the Solo 401(k) for the self-employed, the SEP-IRA, the HSAHealth Savings Account (HSA)A health savings account available only when eligibility requirements are met. Federal tax benefits depend on contribution limits and qualified medical expenses. Health coverage, other coverage and Medicare enrollment can affect eligibility; state tax treatment can differ.Full definition for retirement savings, the 529 for college savings, and the 457(b) governmental plan. Each has a specific role in a legal tax-minimization playbook.
This page covers US-specific accounts and tax law. Outside the US? The priority order is the same, the account names differ (ISAIndividual Savings Account (ISA)A UK tax-advantaged account where contributions are post-tax but all growth and withdrawals are tax-free.Full definition in the UK, TFSATax-Free Savings Account (TFSA)A Canadian tax-advantaged account where contributions are post-tax but all growth and withdrawals are tax-free.Full definition/RRSPRegistered Retirement Savings Plan (RRSP)A Canadian tax-deferred retirement account; contributions reduce taxable income and growth is tax-deferred until withdrawal.Full definition in Canada, Super in Australia, etc.).
This page routes you to the account deep-dives by work situation. For all ten accounts side by side with a fill order, see Every Tax-Advantaged Account Compared.
The IRS gives a short list of accounts where income grows tax-free or tax-deferred. The 401(k) and Roth IRA are the famous two. The other five in this section are where the real leverage sits: a Solo 401(k) can shelter $72K/yr of self-employment income, an HSA is the only triple-tax-advantaged account in the code, a 529 has a new rollover to Roth path, and a governmental 457(b) lets early retirees access funds with no penalty. Pick the ones that fit your job and your life stage.
The toolbox
Each card is its own deep-dive. Skim the descriptions, click into whichever account matches your work situation.
Which account applies to you
Decision helper. Pick the first branch that matches your situation:
- Self-employed with no employees (or just a spouse)? Start with the Solo 401(k). If you want zero paperwork, use a SEP-IRA instead.
- Enrolled in an HSA-eligible HDHPHigh-Deductible Health Plan (HDHP)A health-plan category with statutory deductible and out-of-pocket rules. HSA eligibility also depends on other conditions. Special 2026 rules cover qualifying bronze and catastrophic plans; verify the plan and your own eligibility rather than relying on its deductible alone.Full definition? Max the HSA before anything else past the 401(k) match. It is the best account in the tax code.
- High income with kids headed to college? Compare a 529 against a Roth IRA. State tax deduction size decides.
- Government employee or 501(c)(3) nonprofit staff? Look at your 457(b) options. If you also have a 403(b), you can stack both at the full limit.
- W-2 employee with a regular 401(k) and Roth IRA only? The existing Personal Finance Order of Operations playbook is enough. Come back here when the situation changes.
Most people never touch half of these accounts because nobody tells them they exist. A teacher with a 457(b) and a 403(b) and an HSA can shelter over $55K/yr of income from federal tax without ever doing anything exotic. The accounts are already in the code. You have to open them.
How we got here: the shift from pensions to 401ks
For most of the post-war period, retirement in America rested on three things: Social Security, a company pension, and personal savings. The first two were near-certain. The third was a bonus.
In 1980, roughly 60% of private-sector workers covered by any retirement plan were enrolled in a defined-benefit pension. Today fewer than 15% are. verify×DON'T TRUST, VERIFYClaim: In 1980, roughly 60% of private-sector workers with a retirement plan had a defined-benefit pension. By 2023, fewer than 15% did.Verify at: BLS National Compensation Survey 2024 ↗ Source 1 in the list belowCoverage rates also reported in EBRI historical retirement plan participation series.
The 401k was an accident
The 401k started life as a small clause in the Revenue Act of 1978, Section 401(k) of the Internal Revenue Code, designed to let senior corporate executives defer compensation and lower their current tax bill. verify×DON'T TRUST, VERIFYClaim: Section 401(k) was added to the Internal Revenue Code by the Revenue Act of 1978 (Public Law 95-600). It was originally narrow tax-deferral language, not a mass retirement product.Verify at: Public Law 95-600 (Revenue Act of 1978) ↗ Source 2 in the list below It was not designed as a mass retirement product. In the early 1980s, benefits consultant Ted Benna recognized the clause could be used to create employer-sponsored savings plans for all workers, not just executives. verify×DON'T TRUST, VERIFYClaim: In 1981, benefits consultant Ted Benna interpreted Section 401(k) as authorizing salary-reduction retirement plans for ordinary employees, designing the first such plan for The Johnson Companies.Verify at: InvestmentNews: Ted Benna profile ↗ Source 3 in the list belowBenna's first plan was filed with the IRS in 1981 and approved in 1982. The story is repeated in standard financial-history sources.
Companies adopted it quickly because it was cheaper than funding a defined-benefit pension, it moved the investment risk entirely onto the worker, and it could be sold to workers as empowerment. By the late 1980s the 401k had become the dominant new retirement plan offered by employers.
The honest case for both sides
- Portable: you keep it when you change jobs.
- Greater personal choice over investments.
- No risk of your employer going bankrupt and losing your pension entitlement (private pensions before ERISA had real failure cases).
- If markets do well, you may end up with more than a fixed pension would have paid.
- Predictable income for life.
- No sequence-of-returns risk: payments are not affected by what the market does the year you retire.
- Professional management at institutional scale.
- Protection for workers who are not financially sophisticated.
These systemic criticisms do not change what the right individual action is. If your employer offers a 401k, contribute at minimum up to the match. The match is a guaranteed return nothing else can match. If you can open a Roth IRA, do it. The system has structural problems. Participating in it is still the correct individual decision. See order of operations, the 401k match optimizer, and am I on track.
2026 contribution limits
Quick reference. All figures are the final IRS 2026 inflationinflationA general increase in prices over time, meaning each dollar buys less than it did before.Full definition adjustments. Catch-up amounts apply at age 50+ unless noted.
| ACCOUNT | 2026 LIMIT | CATCH-UP |
|---|---|---|
| 401(k) / 403(b) employee deferral | $24,500 | +$8,000 |
| Solo 401(k) combined cap | $72,000 | +$8,000 |
| SEP-IRA (employer only) | $72,000 or 25% of net SE income | N/A |
| Roth / Traditional IRA | $7,500 | +$1,100 |
| HSA (family) | $8,750 | +$1,000 (age 55) |
| HSA (single) | $4,400 | +$1,000 (age 55) |
| 457(b) governmental | $24,500 | +$8,000 |
| 529 superfund (one parent) | $95,000 (5-yr election) | N/A |
Where to go from here
Sources
Verify badges in the text link to these sources. Figures, rates and rules change: check each source’s date before acting on it.
- U.S. Bureau of Labor Statistics, BLS National Compensation Survey 2024 ↩
- U.S. Congress, Public Law 95-600 (Revenue Act of 1978) ↩
- InvestmentNews: Ted Benna profile ↩
- IRS Publication 560 (retirement plans for small business) - irs.gov
- IRS Publication 969 (HSAs and health plans) - irs.gov
- IRS Publication 590-A and 590-B (IRAs) - irs.gov
- IRS Section 457 - Deferred Compensation Plans - irs.gov
- SECURE 2.0 Act of 2022 - 529 to Roth rollover provision - congress.gov
Last updated . Not tax or legal advice. Disclosures · How pages are reviewed