To contribute to a Traditional IRA from your paycheck, get the routing and account numbers from your IRA custodian, add the IRA as a secondary direct deposit in your employer’s payroll system, and set either a dollar amount or a percentage of gross pay to route there each period. The setup itself takes about fifteen minutes. The part worth slowing down for is the tax treatment: unlike a 401(k), a payroll deposit to a personal IRA comes out of your pay after taxes are withheld, and you claim any deduction yourself when you file.
Why This Isn’t the Same as a 401(k) Contribution
When your employer withholds a 401(k) contribution, it comes out of your gross pay before federal and state income tax is calculated. Your W-2 reflects the reduced taxable wages, and the tax savings show up in every check.
A payroll direct deposit to your personal IRA works differently. Your employer withholds federal and state income tax, Social Security, and Medicare on your full salary first, then routes a slice of what’s left to the IRA.1Internal Revenue Service. Payroll Deduction IRA Your W-2 still shows the full salary as taxable wages. If your contribution is deductible, you claim it when you file, on Schedule 1 (Form 1040), Line 20. The end-of-year tax benefit is the same as any other Traditional IRA contribution; the difference is that you won’t see reduced withholding on your paystubs along the way.
Treat the payroll deposit as an automation tool, not a change to how the IRS taxes the money.
Contribution Limits and Who Can Contribute
For 2026, you can contribute up to $7,500 if you’re under 50, or $8,600 if you’re 50 or older (the extra $1,100 is a catch-up amount).2Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 Those numbers are the combined ceiling across every Traditional and Roth IRA you own. Put $3,000 in a Roth and you have $4,500 of room left in a Traditional IRA that year (assuming you’re under 50).
You need earned income to contribute at all. Wages, salary, tips, and self-employment income count; dividends, rental income, and investment gains don’t.3Office of the Law Revision Counsel. 26 USC 219 – Retirement Savings Your total contribution can’t exceed your earned income for the year. There’s no upper age limit anymore, so long as you have earned income.
If you file jointly, a non-working spouse can contribute to their own IRA based on the working spouse’s income, up to the full limit each, as long as combined contributions don’t exceed the couple’s taxable compensation.4Internal Revenue Service. Retirement Topics – IRA Contribution Limits Contributions for a given tax year can be made through April 15 of the following year; a filing extension does not extend that deadline.
Setting Up the Direct Deposit
Start with your IRA custodian. You need the routing number and account number the custodian uses for incoming electronic transfers. These are typically found in a “Direct Deposit” or “Electronic Transfers” section of the online dashboard, and they usually aren’t the same as any number printed on your statements. Many custodians also generate a pre-filled Direct Deposit Authorization form you can hand straight to payroll. If a form isn’t offered, a letter from the institution confirming the account details is often accepted.
When the payroll form asks whether the account is checking or savings, most IRA custodians want it coded as savings. Confirm this with your custodian if the form isn’t pre-filled.
Next, decide how much to route per pay period. A fixed dollar amount is predictable and easy to reconcile against the annual limit. A percentage of gross pay scales automatically with raises. Whichever you pick, do the arithmetic first: multiply the amount by your number of pay periods and confirm the annual total stays under your contribution limit. Your custodian won’t necessarily block an over-contribution.
Then enter the account in payroll. Most digital systems (ADP, Workday, Gusto, and similar) let you add a secondary deposit account yourself under a heading like “Payment Elections,” “Direct Deposit,” or “Pay Settings.” Enter the routing number, account number, account type, and the amount or percentage per period. If your employer doesn’t offer self-service, submit the authorization form to HR or payroll directly.
Expect one to two pay cycles before the first deduction shows up. Once it should have taken effect, check your paystub for the correct amount, then log into the IRA to confirm the custodian received and credited the deposit.
Whether Your Contribution Will Be Deductible
Deductibility depends on two things: whether you or your spouse is covered by a retirement plan at work, and your modified adjusted gross income (MAGI). If neither of you has a workplace plan, the full contribution is deductible regardless of income.
When a workplace plan is in the picture, the deduction phases out over these 2026 MAGI ranges:2Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
- Single, covered by a workplace plan: $81,000 to $91,000
- Married filing jointly, contributor is covered: $129,000 to $149,000
- Married filing jointly, contributor is not covered but spouse is: $242,000 to $252,000
- Married filing separately, covered by a workplace plan: $0 to $10,000
Below the range, the deduction is full. Within the range, it’s partial. Above the range, none. You can still contribute even when the deduction is fully phased out; the contribution simply becomes nondeductible, and you file Form 8606 to record the after-tax basis in your IRA.5IRS.gov. 2025 Instructions for Form 8606 – Nondeductible IRAs Skipping Form 8606 carries a $50 penalty, but the bigger cost is losing the record of which dollars were already taxed, which means paying tax on them again at withdrawal. Keep every year’s Form 8606 indefinitely; you’ll need the cumulative basis when you retire or do a Roth conversion.
If You Over-Contribute
Contributing more than the annual limit triggers a 6% excise tax on the excess for every year it stays in the account.6Office of the Law Revision Counsel. 26 USC 4973 – Tax on Excess Contributions to Certain Tax-Favored Accounts and Annuities The penalty compounds each year until the excess is out.
Catch it before your tax filing deadline (including extensions) and you can request a “return of excess contribution” from your custodian. They have specific forms for this. Any earnings on the excess are taxable in the year the original contribution was made, but under the SECURE 2.0 Act those earnings no longer carry the 10% early withdrawal penalty for people under 59½.7Fidelity Investments. Excess IRA Contributions – Rules and Options
Miss that window and you have two choices: withdraw the excess as a normal distribution, or apply it to the following year’s contribution if you’ll have room. Either way, you owe the 6% penalty for each year it sat, reported on Form 5329. If contributions are flowing from multiple sources or into more than one IRA, keep a running total through the year.
Year-End Reconciliation
Your custodian reports your contributions to the IRS on Form 5498. Because contributions for a tax year can arrive through the following April 15, the custodian doesn’t finalize the form until late May.8Internal Revenue Service. Form 5498 IRA Contribution Information When your copy arrives, compare it against your own tally of payroll deductions. If the numbers don’t line up, work with payroll and the custodian to find the missing transfer before it turns into an audit problem.
File Form 8606 for any year that includes a nondeductible contribution, and hold on to those forms for as long as you have an IRA balance.