Moving Money From a Simple IRA to a 401(k): What You Need to Know

Yes, you can roll a straightforward IRA into a 401(k), but the rules depend on how long you've had the straightforward IRA

You can move money from a straightforward IRA to a 401(k), but there's a waiting period. If your straightforward IRA has been open for less than two years, your employer's 401(k) plan may not accept the rollover — this is a choice each plan makes, and many do reject early rollovers. If your straightforward IRA has been open for two years or longer, most 401(k) plans will accept it without restriction.

The two-year rule exists because straightforward IRAs are designed as a stepping stone for small business employees. The IRS wants to discourage moving the money out too quickly. Once you clear two years, the money moves the same way any other rollover does: your straightforward IRA custodian sends it directly to your 401(k) plan, no tax withholding happens, and you don't touch the cash.

If your straightforward IRA is less than two years old and your 401(k) won't accept it, you have other options. You can roll it into a traditional IRA instead, or you can leave it where it is and open a 401(k) at your new employer while keeping the straightforward IRA separate.

Key Takeaways

straightforward IRAs less than two years old may be rejected by 401(k) plans, though some plans do accept them — check with your plan administrator first.
straightforward IRAs open for two years or longer can roll into a 401(k) with no age or income restrictions.
The rollover happens directly between custodians, so no taxes are withheld and you don't receive a check.
If your 401(k) won't accept your straightforward IRA, rolling into a traditional IRA is the standard backup option.
You can keep your straightforward IRA open and start a 401(k) at a new job without rolling anything over.

Why the two-year rule exists and what it means for you

The two-year clock starts the day you first contribute to a straightforward IRA — either through your own contribution or your employer's contribution. It doesn't reset if you change jobs or switch employers. If you opened a straightforward IRA on March 15, 2022, you can roll it into a 401(k) on March 15, 2024, regardless of where you work now.

The reason for the waiting period is tax policy. straightforward IRAs are meant to be retirement accounts that stay put. The IRS created the two-year rule to discourage people from treating them as short-term holding tanks. Once two years pass, the IRS considers the account mature enough to move without penalty.

Before two years, if your 401(k) plan does reject your rollover, you're not stuck. You can roll the straightforward IRA into a traditional IRA at any time, with no waiting period. A traditional IRA has fewer restrictions and will accept the money when ready. The tradeoff is that a traditional IRA doesn't offer the same loan options or creditor protection that a 401(k) does, but it's a legal and common holding place.

How to request a rollover from your straightforward IRA custodian

Start by contacting the financial institution that holds your straightforward IRA — this might be a bank, brokerage, or credit union. Tell them you want to do a direct rollover into your new 401(k) plan. Do not ask for a check mailed to you; a direct rollover means the custodian sends the money straight to your 401(k) plan's custodian, which avoids taxes and penalties.

Your straightforward IRA custodian will ask for your 401(k) plan's details: the plan name, the custodian's name (often a large firm like Fidelity, Vanguard, or Charles Schwab), and your account number at the 401(k). You'll also need to confirm that your 401(k) plan accepts straightforward IRA rollovers. If you're unsure, ask your 401(k) plan administrator — they can tell you in one call whether they accept rollovers and whether your straightforward IRA meets their age requirements.

The custodian will prepare the rollover paperwork and send it to your 401(k) plan. This usually takes one to two weeks. You don't need to sign anything or take action once you've made the request — the two custodians handle the transfer. After the money arrives in your 401(k), you'll receive a confirmation statement from your 401(k) plan showing the new balance.

What happens if your 401(k) plan won't accept the rollover

Some 401(k) plans, especially those at smaller employers, have stricter rules about which rollovers they accept. A plan might reject your straightforward IRA if it's less than two years old, or it might reject it for other reasons specific to that plan's design. If this happens, your straightforward IRA custodian will notify you, and the money stays in your straightforward IRA.

Your backup option is to roll the straightforward IRA into a traditional IRA instead. This can happen at any time, with no waiting period. You can open a traditional IRA at the same custodian where your straightforward IRA sits, or at a different institution. The process is the same: request a direct rollover, provide the traditional IRA account details, and the money moves without tax withholding.

A traditional IRA is a permanent home for the money. You can keep it there indefinitely, or you can roll it into a 401(k) later if you change jobs and your new employer's plan accepts it. The only real difference between a traditional IRA and a 401(k) is that a 401(k) offers loan options and slightly stronger creditor protection, but both are tax-deferred retirement accounts.

Tax treatment of straightforward IRA rollovers

A direct rollover from a straightforward IRA to a 401(k) is not a taxable event. You don't owe income tax on the money, and no tax withholding happens. The entire balance moves from one account to the other, and your tax situation doesn't change until you withdraw money in retirement.

If you accidentally take a check from your straightforward IRA custodian instead of requesting a direct rollover, the rules are harsher. You'll have 60 days to deposit that check into a 401(k) or another retirement account, or the money becomes taxable income. Your custodian will also withhold 20 percent for federal taxes, so you'd need to come up with that amount from your own pocket to complete the rollover and avoid penalties. This is why a direct rollover is always the right choice.

Once the money is in your 401(k), it follows 401(k) tax rules from that point forward. You can't withdraw it before age 59½ without a penalty (with some exceptions), and you must start taking withdrawals at age 73 (as of 2023, though this age changes with law updates).

Timing and what to do with your straightforward IRA in the meantime

A rollover typically takes one to three weeks from the time you request it. During that time, your money stays in your straightforward IRA and continues to earn whatever return it was earning before — interest, dividends, or investment gains, depending on how the account is invested.

You can continue to use your straightforward IRA normally while the rollover is processing. You can add money to it (if your employer still offers the plan), or you can leave it alone. Once the rollover completes and the money lands in your 401(k), your straightforward IRA balance will drop to zero (or to whatever amount you didn't roll over, if you rolled over only part of it).

Some people choose to keep their straightforward IRA open even after rolling money into a 401(k). This is fine — there's no rule against having both accounts. You might do this if you're still employed by the company that sponsors the straightforward IRA, or if you want to keep the account as a backup. Just be aware that if you have both a straightforward IRA and a 401(k), contribution limits explore to each account separately.

Frequently Asked Questions

What if I've only had my straightforward IRA for one year?

Your 401(k) plan may reject the rollover because of the two-year rule. Contact your 401(k) plan administrator to ask whether they accept straightforward IRA rollovers under two years old. If they don't, you can roll the straightforward IRA into a traditional IRA instead, which has no waiting period.

Can I roll over only part of my straightforward IRA?

Yes. You can request a partial rollover and leave the rest in your straightforward IRA. This is useful if your 401(k) plan has a low contribution limit or if you want to keep some money in a more flexible account. Just tell your straightforward IRA custodian the amount you want to roll over.

Do I owe taxes on the rollover?

No, as long as you do a direct rollover. The money moves between custodians with no tax withholding or tax bill. If you take a check instead, you have 60 days to deposit it elsewhere, and your custodian will withhold 20 percent for taxes.

Can I roll a straightforward IRA into a Roth 401(k)?

A direct rollover into a Roth 401(k) is possible, but it's treated as a conversion. You'll owe income tax on the full amount you roll over in that tax year. Most people roll into a traditional 401(k) to avoid this tax bill, but a Roth conversion may make sense if you expect lower income that year.

What if I leave my job before the two-year mark?

The two-year clock doesn't reset when you change jobs. If you opened your straightforward IRA on January 1, 2023, and you leave your job on June 1, 2023, you still can't roll it into a 401(k) until January 1, 2025. You can roll it into a traditional IRA at any time, though.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.