Guides › Retirement
Roth vs Traditional: Which Retirement Account Should You Choose? (Plus HSA Basics)
The short answer: choose traditional if you expect your tax rate in retirement to be lower than it is today, and Roth if you expect it to be higher. If the rate is the same, the two come out about even, so the choice turns on flexibility. Traditional contributions save tax now and are taxed when you withdraw; Roth contributions are taxed now and qualified withdrawals come out tax-free. If you are unsure, splitting between the two is a reasonable way to hedge.
How the two accounts differ
| Traditional | Roth | |
|---|---|---|
| Tax on contributions | Pre-tax (workplace plan) or deductible (IRA) now, if eligible | Paid now, no deduction |
| Growth | Tax-deferred | Tax-free if qualified |
| Withdrawals in retirement | Taxed as ordinary income | Qualified withdrawals tax-free |
| Tends to fit when | Tax rate now is higher than later | Tax rate now is lower than later |
Both versions exist for workplace plans (a 401(k), 403(b) or governmental 457 plan may offer a “designated Roth” option) and for individual retirement arrangements (IRAs). These are U.S. rules; other countries have their own versions.
A worked example at the same cost
The fair comparison is at the same out-of-pocket cost. Say you can give up $7,300 of take-home pay this year and your marginal tax rate (federal plus state) is 27%.
- Traditional: you can contribute $10,000, because the deduction hands back $2,700 in tax.
- Roth: you can contribute $7,300, because that money has already been taxed.
Suppose both grow five times over by retirement. The traditional account reaches $50,000; at a 27% tax rate in retirement you keep $36,500. The Roth reaches $36,500 and you keep all of it. A tie. If your retirement rate were 20%, the traditional account would leave you $40,000 and come out ahead; at 32%, it would leave $34,000 and the Roth would win. The break-even is simply your tax rate today. The Roth vs Traditional Calculator runs this comparison with your own numbers and shows your break-even tax rate.
This example assumes the traditional contribution actually lowers your tax bill, which is true for pre-tax workplace contributions and for deductible IRA contributions. If you or your spouse are covered by a workplace plan and your income is above the IRS phase-out, a traditional IRA contribution may be only partly deductible or not deductible at all. A nondeductible contribution gives no tax saving today, so the same-cost comparison above does not apply; in that case a Roth IRA, if your income allows one, or a pre-tax workplace contribution is usually the better comparison.
2026 contribution limits
The IRS adjusts these each year. For 2026:
- 401(k), 403(b), most 457 plans and the TSP: $24,500 in employee contributions, Roth and traditional combined. The catch-up for age 50 and over is $8,000, and people aged 60 to 63 get a higher catch-up of $11,250 under SECURE 2.0. If your 2025 FICA wages from that employer were over $150,000, your 2026 catch-up contributions generally must go in as Roth.
- IRAs: $7,500 across all your traditional and Roth IRAs combined, plus a $1,100 catch-up if you are 50 or older.
Employer matching contributions do not count toward your $24,500 employee limit.
Roth IRA income limits for 2026
The ability to contribute directly to a Roth IRA phases out at higher incomes. For 2026, the phase-out range is a modified adjusted gross income of $153,000 to $168,000 for single filers and heads of household, and $242,000 to $252,000 for married couples filing jointly. If you are married filing separately and lived with your spouse at any time during the year, the range is just $0 to $10,000. Above the top of the range, you cannot contribute directly.
Roth 401(k) contributions have no income limit, which makes them the main Roth option for many higher earners. Separately, if you or your spouse are covered by a workplace plan, the tax deduction for traditional IRA contributions can be reduced or eliminated at certain incomes too.
The five-year rule, in brief
Roth withdrawals of earnings are tax-free only if they are “qualified.” For a Roth IRA, that generally means two things: the five-year period, counted from January 1 of the first year you contributed to any Roth IRA, has passed, and you are 59½ or older (or totally and permanently disabled, as the IRS defines it, or the withdrawal goes to a beneficiary after your death, or is for a qualified first-time home purchase, capped at $10,000 over your lifetime). Your own Roth IRA contributions can be taken out at any time without tax, because you already paid tax on them. A Roth 401(k) has its own five-year period, and conversions carry separate rules, so check IRS Publication 590-B before moving money.
HSA basics: the triple tax advantage
A health savings account (HSA) is not a retirement account by name, but it can work like one. If you are covered by a qualifying high-deductible health plan (HDHP), an HSA offers three federal tax breaks:
- Contributions are deductible (or pre-tax through payroll).
- Growth is tax-free while the money stays in the account.
- Withdrawals for qualified medical expenses are tax-free, at any age.
For 2026, you can contribute up to $4,400 with self-only coverage or $8,750 with family coverage, plus $1,000 more if you are 55 or older. If you are HSA-eligible for only part of the year, your limit is generally prorated by eligible months. The money stays yours if you change jobs or health plans. Withdrawals for non-medical costs before 65 owe income tax plus a 20% additional tax; after 65, they are taxed as ordinary income, much like a traditional IRA. Some states do not follow the federal HSA tax treatment.
Because medical costs tend to rise later in life, some people pay current medical bills out of pocket and let the HSA grow for retirement health costs. That only makes sense if your cash flow and emergency fund can handle it.
A common order of operations
This is general education, not personal advice, but a frequently used sequence is:
- Contribute enough to your workplace plan to get the full employer match.
- If you have an HSA-eligible HDHP and no disqualifying coverage (such as Medicare or a general-purpose health FSA), fund your HSA.
- Fund an IRA, Roth or traditional, depending on your tax picture and income.
- Go back and raise your 401(k) contributions toward the limit.
Which accounts you choose shapes your Retirement wealth, and the HSA ties into Medical wealth too, two of the eight dimensions this site measures. The Retirement assessment shows where your plan stands, and The 4% Rule and FIRE, Explained covers how big the total needs to be.
Common questions
Should I contribute to a Roth or traditional 401(k)?
Compare your tax rate today with the rate you expect in retirement. Traditional tends to come out ahead if your rate will be lower in retirement; Roth tends to win if it will be higher; at the same rate they come out about even. Many people split contributions to hedge.
What is the IRA contribution limit for 2026?
$7,500 across all traditional and Roth IRAs combined, plus a $1,100 catch-up contribution if you are 50 or older, according to the IRS.
What is the Roth IRA income limit for 2026?
Direct contributions phase out between $153,000 and $168,000 of modified AGI for single filers and heads of household, and between $242,000 and $252,000 for married couples filing jointly ($0 to $10,000 if married filing separately and you lived with your spouse during the year).
What are the HSA contribution limits for 2026?
$4,400 for self-only HDHP coverage and $8,750 for family coverage, plus a $1,000 catch-up if you are 55 or older, per IRS Rev. Proc. 2025-19. The limit is generally prorated if you are eligible for only part of the year.
Related guides
Sources
- 401(k) limit increases to $24,500 for 2026, IRA limit increases to $7,500 — Internal Revenue Service
- Rev. Proc. 2025-19 — Internal Revenue Service
- Publication 969, Health Savings Accounts and Other Tax-Favored Health Plans — Internal Revenue Service
- Publication 590-B (2025), Distributions from Individual Retirement Arrangements (IRAs) — Internal Revenue Service
- Retirement topics - Designated Roth account — Internal Revenue Service
This guide is for informational and educational purposes only. It is not financial, medical, legal, or tax advice. Consult a qualified professional for guidance specific to your situation.
Compare your options with the Roth vs Traditional Calculator →
See how your plan scores in the Retirement assessment →