What are the main types of retirement accounts? They sort into four tax buckets: pre-tax, Roth, taxable, and the triple tax free HSA, and how you balance those buckets is the setup for Roth conversion planning later in retirement.
Key Takeaways
- Every retirement account falls into one of four tax buckets: pre-tax (tax-deferred), Roth (tax-free growth), taxable, or the triple tax free HSA.
- The 2026 elective deferral limit for a 401(k), 403(b), 457(b), and the TSP is $24,500, per the IRS.
- The 2026 IRA contribution limit (traditional or Roth combined) is $7,500, plus a $1,100 catch-up at age 50.
- A SEP IRA and a solo 401(k) share a 2026 total cap of $72,000, the section 415(c) annual additions limit.
- The 2026 HSA limit is $4,400 self-only and $8,750 for family coverage, with a $1,000 catch-up at age 55.
- Balancing pre-tax against Roth balances is what makes a Roth conversion a planning lever rather than a guess.
2026 Contribution Limits by Account
Figures for the 2026 tax year, verified against IRS primary sources.
What are the main types of retirement accounts?
The main types of retirement accounts are individual accounts (traditional and Roth IRA), workplace plans (401(k), Roth 401(k), 403(b), 457(b), and the TSP), self-employed plans (SEP IRA, SIMPLE IRA, and solo 401(k)), the health savings account used as a stealth retirement account, and the ordinary taxable brokerage account. Each one is really just a wrapper with its own tax rule.
The useful way to read the list is not by provider or by job title. It is by how the account is taxed, because the tax treatment is what decides when the account helps you and when it works against you. That is why this guide groups every account into a tax bucket first.
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This page is about the account types themselves. If you instead want to know how the money is taxed once it comes out, that belongs to a separate topic on types of retirement income.
How do the three tax buckets work?
There are three classic tax buckets, plus one special case. A pre-tax bucket gives you a deduction today and taxes every withdrawal later as ordinary income. A Roth bucket takes after-tax money now and grows tax-free, with qualified withdrawals never taxed again. A taxable bucket has no special wrapper, so growth and sales are taxed as they happen, usually at capital-gains rates.
The special case is the HSA, which is triple tax-free: the contribution is deductible, the growth is untaxed, and qualified medical withdrawals are untaxed. No other account offers all three at once.
Reading your accounts this way is the first step in tax diversification in retirement. A saver with everything in the pre-tax column has one large future tax bill waiting; spreading across buckets gives you dials to turn each year.
What are the pre-tax retirement accounts?
Pre-tax accounts give you a deduction now and defer the tax until you withdraw. This is the biggest bucket by far, and it is where most retirees hold most of their money, which is exactly why it drives so much later planning.
Traditional IRA
A traditional IRA is the individual pre-tax account. The 2026 contribution limit is $7,500, plus a $1,100 catch-up at age 50, and the deduction phases out between $81,000 and $91,000 of income for a single filer covered by a workplace plan. It suits savers who want the deduction today and expect a similar or lower bracket later. The trade-offs against a Roth are covered in Roth vs traditional IRA.
401(k)
A 401(k) is the standard private-employer plan. The 2026 elective deferral limit is $24,500, rising to $32,500 with the age 50 catch-up and $35,750 for those age 60 to 63 under the SECURE 2.0 super catch-up. Many plans add an employer match on top. See how a 401(k) works and 401(k) vs Roth IRA for the deeper mechanics.
403(b) and 457(b)
A 403(b) is the 401(k) equivalent for public schools, hospitals, and nonprofits, with the same $24,500 elective limit. A 457(b) is a governmental deferred compensation plan that carries its own separate $24,500 limit, so an employee with both a 403(b) and a 457(b) can defer into each. Details live in 403(b) vs 401(k) and 457 vs 401(k).
TSP
The Thrift Savings Plan is the federal-employee and military version, also at a $24,500 elective limit for 2026, with famously low-cost index funds. Federal savers can read what a Thrift Savings Plan is for the full picture.
SEP IRA and SIMPLE IRA
These are the small-business pre-tax plans. A SEP IRA lets an employer contribute up to 25% of compensation, capped at $72,000 for 2026. A SIMPLE IRA has a 2026 employee limit of $17,000, or $18,100 under certain plans, per the IRS. Self-employed savers often compare these in SEP IRA vs solo 401(k).
What are the Roth retirement accounts?
Roth accounts take after-tax dollars now so that qualified withdrawals later are completely tax-free. They suit savers who expect equal or higher tax rates in the future, and they carry no lifetime required minimum distributions for the original owner in the case of the Roth IRA.
Roth IRA
The Roth IRA shares the $7,500 combined 2026 IRA limit, but direct contributions phase out between $153,000 and $168,000 for single filers and between $242,000 and $252,000 for married couples filing jointly, per the IRS. Higher earners often reach it another way, which is why some compare it to a taxable brokerage account.
Roth 401(k), Roth 403(b), and Roth TSP
These are the workplace Roth options. They use the same $24,500 elective limit as their pre-tax twin and, unlike the Roth IRA, have no income cap, so a high earner can still fund one directly. The choice between funding the pre-tax or Roth side of a workplace plan is walked through in Roth 401(k) vs traditional 401(k).
A useful bridge between the pre-tax and Roth worlds is a rollover IRA, which is where a departing employee often parks an old 401(k) before deciding whether to convert any of it.
How does the HSA work as a stealth retirement account?
A health savings account is the only triple tax-free retirement account: contributions are deductible, growth is untaxed, and qualified medical withdrawals are untaxed. Paired with a high-deductible health plan, it can be invested and left to grow for decades rather than spent each year.
The 2026 HSA limits are $4,400 for self-only coverage and $8,750 for family coverage, with an extra $1,000 catch-up at age 55, per IRS Publication 969. After age 65, non-medical withdrawals are taxed like a traditional IRA rather than penalized, which is why many savers treat it as a stealth retirement account. The comparison with a Roth is spelled out in HSA vs Roth IRA.
What about a taxable brokerage account?
A taxable brokerage account is not a retirement account by law, but it plays a real retirement role because it has no contribution limit and no withdrawal age. Growth is taxed as it is realized, usually at long-term capital-gains rates, which are often lower than the ordinary-income rates that hit pre-tax withdrawals.
That flexibility makes the taxable bucket valuable as the account you spend from in a low-income year while you convert pre-tax dollars, without adding to the income that year. An annuity is sometimes weighed against these accounts too; that trade-off sits in annuity vs Roth IRA.
How do the retirement account types compare?
The table below maps every major account type to its tax bucket, its 2026 contribution limit, and who it typically suits. All 2026 figures are from the IRS.
| Account type | Tax bucket | 2026 limit | Who it tends to suit |
|---|---|---|---|
| Traditional IRA | Pre-tax | $7,500 ($8,600 if 50+) | Savers wanting a deduction now |
| Roth IRA | Roth | $7,500 ($8,600 if 50+), income limits apply | Savers expecting equal or higher future brackets |
| 401(k) | Pre-tax | $24,500 ($32,500 if 50+; $35,750 if 60 to 63) | Employees with a workplace plan and match |
| Roth 401(k) | Roth | $24,500 elective, no income cap | Higher earners wanting tax-free growth |
| 403(b) | Pre-tax or Roth | $24,500 elective | Teachers, hospital, and nonprofit staff |
| 457(b) | Pre-tax or Roth | $24,500 (separate limit) | State and local government employees |
| TSP | Pre-tax or Roth | $24,500 elective | Federal employees and military |
| SEP IRA | Pre-tax | Up to $72,000 (25% of pay) | Self-employed and small business owners |
| SIMPLE IRA | Pre-tax | $17,000 ($18,100 certain plans) | Small firms with 100 or fewer staff |
| Solo 401(k) | Pre-tax or Roth | Up to $72,000 | Self-employed with no employees |
| HSA | Triple tax-free | $4,400 self / $8,750 family (+$1,000 if 55+) | HDHP holders using it for retirement |
| Taxable brokerage | Taxable | No limit | Savings beyond the capped accounts |
How do retirement account types set up Roth conversion planning?
The account mix decides how much room you have to plan. A retiree whose money sits almost entirely in pre-tax accounts faces required minimum distributions starting at age 73 for those born 1951 to 1959, and age 75 for those born in 1960 or later under SECURE 2.0. Those forced withdrawals can push income into higher brackets.
Balancing the pre-tax and Roth buckets ahead of time is what turns that pressure into a choice. In a lower-income year, a retiree often considers moving pre-tax dollars into the Roth bucket up to the top of a target bracket, for example the 24% bracket, which for 2026 tops out at $201,775 for a single filer and $403,550 for a married couple filing jointly. The mechanics are covered in what a Roth conversion is, and the sizing question in how much to convert to Roth.
Nobody should read a bracket figure as a directive. A financial professional can model whether, and how much, a conversion makes sense given your other income, deductions, and Medicare surcharges.
Where a plan comes together
Q3 Advisors is a fee-only fiduciary firm focused on retirement tax planning and Roth conversions. A retiree weighing how their account buckets fit together can learn more at our Roth conversion resources.
Frequently asked questions about types of retirement accounts
What are the four main types of retirement accounts by tax treatment?
They are pre-tax accounts (traditional IRA, 401(k), 403(b), 457(b), TSP, SEP, SIMPLE), Roth accounts (Roth IRA, Roth 401(k), Roth 403(b), Roth TSP), the triple tax-free HSA, and the ordinary taxable brokerage account. Grouping by tax treatment is more useful than grouping by employer or provider.
What is the difference between a pre-tax and a Roth account?
A pre-tax account gives you a deduction today and taxes withdrawals later as ordinary income. A Roth account uses after-tax money now and lets qualified withdrawals come out tax-free. Which one fits depends on whether your tax rate is likely higher now or in retirement.
How much can I contribute to a 401(k) in 2026?
The 2026 elective deferral limit is $24,500 for a 401(k), 403(b), 457(b), or the TSP, per the IRS. That rises to $32,500 with the age 50 catch-up and $35,750 for savers age 60 to 63 under the SECURE 2.0 super catch-up.
How much can I contribute to an IRA in 2026?
The 2026 IRA contribution limit is $7,500 combined across traditional and Roth IRAs, plus a $1,100 catch-up at age 50 for a total of $8,600. Roth IRA direct contributions phase out at higher incomes, while traditional IRA deductibility can phase out if you are covered by a workplace plan.
Is an HSA a retirement account?
Not by statute, but it works like one when invested and left to grow. The HSA is triple tax-free, and after age 65 non-medical withdrawals are taxed like a traditional IRA rather than penalized. The 2026 limits are $4,400 self-only and $8,750 for family coverage.
Which retirement account suits a self-employed person?
The common choices are a SEP IRA, a SIMPLE IRA, or a solo 401(k). A SEP IRA and a solo 401(k) share a $72,000 total cap for 2026, but a solo 401(k) reaches it at a lower income because you contribute as both employee and employer. The right fit depends on income, employees, and whether you want a Roth option.
How do account types affect Roth conversions?
Your pre-tax balances are the pool a conversion draws from, and your Roth and taxable balances give you room to manage the tax. A saver with only pre-tax accounts has fewer dials to turn, which is why tax diversification across buckets is often discussed alongside conversion planning.
What is the difference between account types and retirement income types?
Account types describe the wrapper you save into, such as a Roth IRA or a 401(k). Retirement income types describe how the money is taxed when it comes out, such as Social Security, pensions, and capital gains. They are related but separate topics.
This article is for educational purposes only and is not individualized investment, tax, or legal advice. Consult a qualified professional about your specific situation.
