A Roth IRA is an individual retirement account; a 401(k) is an employer retirement plan that may offer traditional, Roth, or both contribution options. In 2026, an ordinary 401(k) generally permits up to $24,500 of employee elective deferrals before eligible catch-ups, while regular contributions across your traditional and Roth IRAs generally share a $7,500 limit before the IRA catch-up. The two limits are separate, but direct Roth IRA contributions also depend on income and filing status. See the IRS 2026 retirement-limit announcement.
This U.S. federal guide was reviewed October 9, 2026. It compares a personal Roth IRA with an ordinary employer 401(k), not a SIMPLE or starter 401(k), SEP, or state retirement program. It explains payroll records and contribution eligibility rather than recommending investments. State tax treatment and individual plan terms require their own review.
Roth IRA vs. 401(k): which accounts are you actually comparing?
“Roth” describes a tax treatment; “IRA” and “401(k)” identify different retirement arrangements. A personal Roth IRA is opened with an IRA custodian. A Roth 401(k) is a designated Roth account within an employer’s plan. Calling every Roth deduction a Roth IRA can lead you to apply the wrong income restriction, contribution ceiling, or withdrawal rule.
A Roth IRA contribution is not deductible. With a traditional pre-tax 401(k) deferral, federal income taxation is generally deferred until distribution. Employee Roth 401(k) deferrals are included in current federal income-tax wages; qualified Roth distributions, including earnings, can be tax-free. The IRS Roth IRA overview and workplace Roth explanation distinguish these arrangements.
| Question | Personal Roth IRA | Employer 401(k) |
|---|---|---|
| Who establishes it? | You open your own IRA with a custodian. | The employer sponsors the plan; participation follows its terms. |
| Can it be Roth? | Yes; the account must be designated a Roth IRA. | Only if the plan offers a designated Roth option. |
| Which contribution pool applies? | Regular traditional and Roth IRA contributions share an IRA pool. | Employee traditional and Roth elective deferrals share a plan-deferral pool. |
| Which record identifies it? | Custodian account documents and contribution history. | Plan documents, payroll elections and participant statements. |
For an unfamiliar “ROTH” line, ask payroll for the destination account’s exact name. Then compare it with the financial institution’s statement. A label is a clue, not a complete description of the legal arrangement. Our Roth 401(k) pay-stub guide covers the traditional-versus-Roth payroll wage calculation in more detail.
Does a Roth IRA appear on a pay stub like a 401(k)?
A personal Roth IRA funded from your bank account usually does not appear as an employer deduction. You receive your pay and send money to the IRA yourself. A split direct deposit to an IRA may instead appear in the payment-distribution section. Confirm that the custodian accepted it as an IRA contribution for the intended tax year.
An ordinary payroll-deduction IRA is another possible route. The employer forwards an employee-authorized after-tax deduction to the employee’s IRA; the IRA rules still apply. This arrangement does not create an additional 401(k) allowance, and only employees contribute under the ordinary payroll-deduction IRA arrangement. The IRS payroll-deduction IRA guidance explains its operation.
Employee 401(k) deferrals normally have their own current and year-to-date deduction records. Check box 12 against the 2026 W-2 instructions: D identifies traditional 401(k) employee deferrals; AA identifies employee deferrals to its designated Roth account. A regular personal Roth IRA contribution does not become code AA just because the employer helped transmit it.
Paycheck presentation also matters. An IRA transfer made after your net paycheck reaches the bank is a use of that money, not another employer withholding to subtract from the statement. Conversely, a separately listed after-tax IRA payroll deduction affects the cash sent to your checking account. Read the net-pay reconciliation guide before counting the same contribution twice.
What are the Roth IRA and 401(k) contribution limits for 2026?
Track two annual pools, not one combined “retirement maximum.” Within an ordinary 401(k), traditional and Roth employee elective deferrals share the applicable employee ceiling. Across personal IRAs, regular traditional and Roth contributions share the applicable IRA ceiling. Opening more accounts does not multiply either personal allowance.
| Age reached by year-end | 401(k) employee ceiling | Combined regular IRA ceiling |
|---|---|---|
| Under 50 | $24,500 | $7,500 |
| 50–59 or 64 and older | $32,500 | $8,600 |
| 60–63 | $35,750 | $8,600 |
The 401(k) totals assume the applicable catch-up is available: $8,000 ordinarily at age 50 or older, or $11,250 when turning 60, 61, 62, or 63 in 2026. The larger age-60–63 amount replaces the $8,000 catch-up; the two are not added together. IRA catch-up is $1,100 at age 50 or older, without a special age-60–63 tier. Current IRS catch-up guidance explains plan and compensation conditions.
The IRA contribution rules also limit regular contributions to eligible taxable compensation if that is lower. A joint-return spousal IRA rule can permit a contribution for a spouse without their own compensation, subject to the couple’s compensation and each spouse’s separate account limits. Merely having investment income or a large bank balance does not establish compensation eligibility.
The plan can impose a smaller employee limit. Deferrals to different employers’ 401(k) plans generally must be coordinated rather than treating each new job as a fresh $24,500 allowance. Employer matching and other annual additions have a separate test: generally the lesser of compensation or $72,000 for 2026, excluding eligible catch-ups. See IRS 401(k) contribution limits. That $72,000 is not the ordinary employee salary-deferral allowance.
For 2026, applicable prior-year wages above $150,000 from the plan sponsor generally require Roth treatment for catch-ups in affected plans. This is a 401(k) catch-up rule based on 2025 employer wages, not the Roth IRA’s 2026 household MAGI test. It does not turn every regular 401(k) contribution into a mandatory Roth deferral. Confirm implementation with the administrator; see Notice 2025-67.
What are the 2026 income limits for direct Roth IRA contributions?
Direct Roth IRA contributions have a filing-status and modified adjusted gross income test; Roth 401(k) employee deferrals do not have that Roth IRA income test. A person who cannot contribute directly to a Roth IRA may still be eligible for their employer’s Roth 401(k). Plan eligibility and deferral restrictions still apply. The IRS designated Roth account guidance explains this income-limit distinction.
| Federal filing situation | Phaseout lower boundary | No direct contribution at or above |
|---|---|---|
| Single or head of household | $153,000 | $168,000 |
| Married filing jointly or qualifying surviving spouse | $242,000 | $252,000 |
| Married filing separately; lived with spouse at any time in the year | $0 | $10,000 |
| Married filing separately; did not live with spouse at any time in the year | $153,000 | $168,000 |
These are contribution-eligibility boundaries, not income-tax brackets. At the lower boundary, the phaseout arithmetic itself produces no reduction; above it and below the upper boundary, a reduced amount may remain. At or above the upper boundary, no direct regular Roth IRA contribution is allowed. Compensation and the combined IRA limit can reduce the amount further. Notice 2025-67 supplies the 2026 thresholds.
Use MAGI for Roth IRA purposes, not net pay, cash gross, or one W-2 box. Tax-return adjustments and specified add-backs can matter. Our MAGI guide explains why different programs use different definitions. A pre-tax payroll election can affect the underlying income calculation, but it does not by itself prove your final IRA eligibility.
A reduced-contribution example with two separate restrictions
Consider a separate fictional single filer, age 35, with sufficient eligible compensation and 2026 Roth IRA MAGI of $159,000. First assume no other regular IRA contributions. The income phaseout is $6,000 above the $153,000 lower boundary, across a $15,000 band. The reduction fraction is $6,000 ÷ $15,000 = 0.400. Applying it to $7,500 produces a $3,000 reduction and a $4,500 income-based Roth IRA ceiling.
Now suppose this same person already contributed $1,200 to a traditional IRA for 2026. Remaining combined IRA room is $7,500 − $1,200 = $6,300. The allowed Roth IRA contribution is the smaller of $4,500 and $6,300: $4,500. Do not automatically subtract $1,200 from the already reduced $4,500. The worksheet compares two restrictions.
This example follows the method in Publication 590-A, Worksheet 2-2, using the announced 2026 dollar amounts. The currently available 2025 publication supplies the calculation method, not this guide’s 2026 thresholds. Its worksheet also addresses decimal rounding, rounding the reduced result upward to a $10 increment, and a minimum $200 result where applicable; other IRA contributions and compensation still constrain the answer. Use the applicable year’s final instructions when filing.
Direct contributions, conversions, and rollovers are different transactions. A conversion is not an extra annual cash-contribution allowance, and a “backdoor Roth” is not automatically tax-free: existing pre-tax IRA balances can affect taxation. The Form 8606 instructions address nondeductible basis and conversions. Review the full IRA history before attempting a workaround.
Can you contribute to both a Roth IRA and a 401(k) in the same year?
Yes, if you satisfy each arrangement’s requirements separately. The IRS IRA FAQs confirm that workplace-plan participation does not itself prohibit an IRA contribution. A traditional IRA deduction can be limited by workplace coverage and income; Roth IRA contributions are never deductible. Contribution permission and deduction permission are different questions.
Take a fictional 35-year-old employee in 2026 with exactly 26 paychecks, adequate compensation, and verified eligibility for the full direct Roth IRA amount. Assume one ordinary 401(k), no other jobs, no other regular IRA deposits, no catch-up, and no corrective distributions. The employee elects $320 per check to a traditional 401(k), $180 to its Roth account, and separately transfers $225 from the bank to a personal Roth IRA after each check.
| Contribution or limit check | Calculation | Annual amount |
|---|---|---|
| Traditional 401(k) employee deferrals | 26 × $320 | $8,320 |
| Roth 401(k) employee deferrals | 26 × $180 | $4,680 |
| Combined 401(k) employee deferrals | $8,320 + $4,680 | $13,000 |
| Basic 401(k) employee room left | $24,500 − $13,000 | $11,500 |
| Separate personal Roth IRA deposits | 26 × $225 | $5,850 |
| Regular IRA room left | $7,500 − $5,850 | $1,650 |
Total employee saving in this illustration is $18,850, but that total is not tested against either single ceiling. The traditional and Roth 401(k) pieces are added together for the plan-deferral test. The personal Roth IRA deposits belong to the separate IRA test. Any employer match would need its own plan record and annual-additions review; it is not included in these employee totals.
The assumed 26 deposits are an illustration, not a promise about every biweekly calendar. Recount actual pay dates, especially in a year with an extra check or a job change. Use the payroll schedule guide and actual transaction dates before annualizing a recurring election.
How should you compare an employer match, fees and tax treatment?
Compare the actual accounts available to you before deciding how to split new contributions. Ask for the employer match formula, eligible compensation definition, eligibility date, vesting schedule, and whether a year-end true-up exists. A contribution that stops too early or misses an eligible pay period may affect a per-pay-period match; the plan’s written formula controls.
Your own 401(k) employee contributions are fully vested. Employer contributions may follow a vesting schedule, although some plan designs require immediate vesting. See the IRS vesting explanation. A balance containing employer money is not proof that every dollar is already nonforfeitable.
Do not assume a Roth employee election makes the employer match Roth. Current rules permit plans to offer designated Roth matching or nonelective contributions under specified conditions, including full vesting when allocated. Those employer amounts have distinct income and reporting treatment, generally on Form 1099-R, rather than simply becoming extra W-2 code AA employee deferrals. The IRS SECURE 2.0 reporting explanation describes the distinction.
Next compare investment choices, administrative charges, fund expenses, transaction charges and access to assistance. An IRA does not automatically cost less, and an employer plan does not automatically invest better. The DOL retirement-plan guide explains the importance of the summary plan description, participant disclosures and statements.
Finally compare current income-tax treatment with uncertain future circumstances. Pre-tax deferrals generally reduce current federal income-tax wages; Roth employee contributions do not. The tax result of future distributions depends on the account and qualification rules. Neither choice guarantees a better lifetime outcome. Contributions also leave less cash available now, so evaluate the budget, expensive debt and emergency savings alongside retirement goals. The deduction guide helps interpret the immediate paycheck effect.
A useful question for the administrator is: “If I change this election next paycheck, what happens to my match, contribution ceiling, current taxable wages and available cash?” For a custodian, ask about the account type, costs, contribution tax-year designation and documentation. Specific answers make a comparison more useful than a generic ranking of account names.
Are Roth IRA and Roth 401(k) withdrawal rules the same?
No. The shared word “Roth” does not make access or distribution taxation identical. For a personal Roth IRA, regular contributions generally come out before conversions and earnings under the ordering rules. A return of regular contribution basis is generally free of federal income tax and the early-distribution additional tax. Keep contribution and distribution history; the current account balance does not tell you how much basis remains.
Earnings need a separate review. A qualified Roth IRA distribution requires the applicable five-tax-year period plus age 59½, death, disability, or qualifying first-home use within the $10,000 lifetime boundary. Conversions can have separate five-year recapture periods. See Publication 590-B’s Roth IRA distribution rules. An exception to an additional tax is not always an exclusion of earnings from income.
A nonqualified Roth 401(k) distribution generally contains proportional shares of contributions and earnings; the Roth IRA’s contribution-first ordering should not be imported into that plan. Plan distribution restrictions still apply. Its qualified-distribution test generally combines a five-tax-year period with age 59½, death or disability. The IRS designated Roth FAQs explain these differences. When Roth 401(k) money is rolled into a Roth IRA, time in the plan does not count toward the IRA’s five-year qualified-distribution clock. An earlier contribution to your own Roth IRA may already have started that IRA clock.
IRAs do not permit participant loans. A 401(k) may offer loans if its terms allow, with legal limits and repayment conditions; access is not guaranteed. See the IRS loan FAQs. Borrowing from an IRA or pledging it as collateral can have serious tax consequences.
Under current rules, both a personal Roth IRA and a designated Roth 401(k) account are free of owner-lifetime required minimum distributions. Beneficiary rules after death still apply. Do not use an old comparison claiming that every Roth 401(k) owner must take lifetime RMDs. The current IRS RMD FAQs state the Roth exception.
How do you verify contributions, deadlines and corrections?
Reconcile the payroll record with the receiving account, then check the annual rules. A deduction shows money withheld from pay; a custodian or plan transaction confirms what was credited. Match contribution dates, tax treatment, tax-year designation, reversals and fees. A year-end investment balance includes market changes and possibly other money, so it is not a substitute for annual contribution totals.
- For employee 401(k) deferrals: compare current and YTD payroll lines, elections, all employers’ statements, plan receipts and W-2 codes D and AA. Keep employer contributions separate.
- For a personal IRA: total all custodians’ regular traditional and Roth deposits for the contribution year, including payroll remittances. Separate conversions, rollovers and corrections from ordinary deposits.
- For income eligibility: use the final Roth IRA MAGI computation and eligible compensation, rather than relying only on a provisional pay-stub forecast.
- For account evidence: retain custodian confirmations and Form 5498. The Form 5498 instructions identify box 10 for Roth IRA contributions, distinct from conversion reporting.
A regular IRA contribution can generally be made for a tax year through that year’s return due date, without extensions. For an ordinary calendar-year taxpayer, 2026 IRA contributions are generally due April 15, 2027, unless applicable relief changes the deadline. A deposit in early 2027 needs an explicit tax-year designation. Ordinary employee 401(k) deferrals instead follow payroll and timely election rules; do not assume the IRA deadline lets you retroactively defer last year’s wages. Ask the administrator before the final payroll cut-off.
For excess personal IRA contributions, a recurring 6% excise tax can apply while an excess remains, subject to the applicable rules. Contact the custodian for the proper correction, including associated earnings where required, and review return reporting. An ordinary withdrawal with the same dollar amount may not be the correct transaction. The IRS excess-contribution guidance distinguishes the correction deadline, which can include extensions, from the ordinary contribution deadline.
Excess 401(k) elective deferrals use a different process. Notify the administrator promptly; the general corrective-distribution deadline is April 15 after the deferral year, and administrator processing cut-offs may be earlier. Do not use an IRA correction request to fix a workplace-plan error. The IRS 401(k) limits page explains excess-deferral treatment. Keep corrected plan records and tax forms with your pay-stub and W-2 reconciliation.
Does a Roth IRA contribution reduce W-2 wages?
No. A regular personal Roth IRA contribution is after-tax and nondeductible. Employer-assisted remittance does not create the wage exclusion associated with a traditional 401(k) deferral.
Does maximizing a 401(k) prevent a Roth IRA contribution?
No, not by itself. The IRA has a separate regular-contribution limit, compensation requirement and Roth income test. Check each rather than combining the two ceilings.
Is a traditional IRA the same as a traditional 401(k)?
No. They are different arrangements. A traditional IRA deduction can be restricted by workplace-plan coverage and income; see IRS IRA deduction limits. That restriction is different from whether an employee may elect a pre-tax 401(k) deferral.
Editorial scope: federal rules for 2026 and separate fictional examples, checked against current IRS guidance. No personal tax liability, investment return, state treatment or individual plan entitlement is calculated. A pay-stub document can present verified payroll information; it does not open a retirement account, transmit contributions or establish contribution eligibility.