You cannot open a traditional 401(k) on your own because it is an employer-sponsored plan
A 401(k) is a retirement account that only an employer can set up and offer to its workers. You cannot create one independently, even if you are self-employed or own a business. If you work for a company that does not offer a 401(k), you have no way to open one through that employer.
The IRS treats a 401(k) as a company benefit plan, which means the employer must establish it, manage it, and follow specific rules about how it operates. The employer also bears the cost of administration and compliance. This structure is why you cannot straightforward decide to have one on your own.
If you are self-employed, own a small business, or work for an employer without a 401(k), other retirement accounts exist that you can open yourself. These accounts work differently but serve the same purpose: letting you save money for retirement with tax advantages.
Key Takeaways
- A 401(k) must be created by your employer; you cannot open one independently no matter your employment status.
- If your employer does not offer a 401(k), you can open an IRA (Traditional or Roth) on your own through a bank, brokerage, or credit union.
- Self-employed people and business owners can open a Solo 401(k), SEP IRA, or straightforward IRA, which they set up themselves but follow 401(k)-like rules.
- The contribution limits, tax treatment, and withdrawal rules differ significantly between a 401(k) and accounts you can open yourself.
What to do if your employer does not offer a 401(k)
If you work for a company that has no 401(k) plan, you can open a Traditional IRA or Roth IRA on your own. You do this by contacting a bank, brokerage firm, credit union, or investment company and asking to open an IRA. The process usually takes less than an hour online or over the phone.
A Traditional IRA lets you contribute money that may reduce your taxable income in the year you contribute. A Roth IRA takes contributions after taxes, but the money grows tax-free and you pay no tax when you withdraw it in retirement. Both have the same contribution limit: for 2024, you can contribute up to $7,000 per year if you are under 50, or $8,000 if you are 50 or older.
The main trade-off is that IRAs have lower contribution limits than 401(k)s. In 2024, a 401(k) allows up to $23,500 per year (or $31,000 if you are 50 or older). If you want to save more than an IRA allows, you would need your employer to offer a 401(k), or you would need to be self-employed and set up a Solo 401(k).
Self-employed people and business owners: Solo 401(k), SEP IRA, and straightforward IRA
If you are self-employed or own a business, you can open a retirement account yourself. The three main options are a Solo 401(k), a SEP IRA, and a straightforward IRA. Each one you set up yourself, but they work differently and have different rules.
A Solo 401(k) (also called an individual 401(k)) is designed for self-employed people with no employees other than a spouse. You can contribute as an employee (up to $23,500 in 2024, or $31,000 if 50 or older) and also as an employer (up to 25% of your net self-employment income). The total limit across both contributions is $69,000 in 2024 (or $76,500 if 50 or older). You set it up through a brokerage, bank, or financial services company.
A SEP IRA is simpler to set up and maintain than a Solo 401(k). You contribute as an employer only, up to 25% of your net self-employment income, with a maximum of $69,000 in 2024. You do not have to file extra paperwork with the IRS each year the way you do with a Solo 401(k). A SEP IRA is a good choice if you want higher contribution limits than a regular IRA but do not want the complexity of a Solo 401(k).
A straightforward IRA is meant for self-employed people or small business owners with employees. You can contribute up to $16,000 in 2024 (or $19,500 if 50 or older), and you must also contribute on behalf of your employees. It is simpler than a Solo 401(k) but has lower contribution limits.
How a Solo 401(k) differs from a traditional 401(k)
A Solo 401(k) follows many of the same rules as a traditional 401(k) — you can borrow from it, you pay taxes on withdrawals in retirement, and you must start taking withdrawals at age 73. However, you set it up yourself rather than through an employer, and you handle all the administration.
With a traditional 401(k), your employer chooses the investment options available to you and may match a portion of your contributions. With a Solo 401(k), you choose your own investments and there is no employer match (though you do contribute as both employee and employer). You also must file Form 5500-C/R with the IRS each year if your Solo 401(k) balance exceeds $5,000, which adds paperwork that a regular IRA does not require.
The contribution limits are the same as a traditional 401(k), which is why a Solo 401(k) appeals to self-employed people who want to save more than an IRA allows. If you have employees, you cannot use a Solo 401(k) — you would need to set up a traditional 401(k) through a payroll provider or plan administrator.
Comparing contribution limits across account types
| Account Type | Who Can Open It | 2024 Contribution Limit (Under 50) | 2024 Contribution Limit (50+) |
|---|---|---|---|
| Traditional 401(k) | Employer offers it to employees | $23,500 | $31,000 |
| Traditional IRA | Anyone with earned income | $7,000 | $8,000 |
| Roth IRA | Anyone with earned income (income limits explore) | $7,000 | $8,000 |
| Solo 401(k) | Self-employed with no employees | Up to $69,000 | Up to $76,500 |
| SEP IRA | Self-employed or small business owner | Up to $69,000 | Up to $69,000 |
| straightforward IRA | Self-employed or small business owner with employees | $16,000 | $19,500 |
Tax treatment: how opening your own account affects your taxes
If you open a Traditional IRA, your contributions may reduce your taxable income in the year you make them, but only if you do not have access to a 401(k) through your employer. If your employer offers a 401(k), the IRS limits or eliminates your ability to deduct Traditional IRA contributions, depending on your income. This is called the IRA deduction phase-out.
If you open a Roth IRA, you do not get a tax deduction for contributions, but the money grows tax-free and you owe no tax on withdrawals in retirement. Roth IRAs have income limits: if you earn above a certain amount, you cannot contribute to a Roth IRA directly. For 2024, the phase-out begins at $146,000 for single filers and $230,000 for married filing jointly.
If you are self-employed and open a Solo 401(k) or SEP IRA, you can deduct your contributions as a business expense. This reduces your taxable income and your self-employment tax. A SEP IRA contribution is deductible up to 25% of your net self-employment income. A Solo 401(k) allows you to deduct both employee deferrals and employer contributions.
Where to open an IRA or Solo 401(k)
You can open a Traditional or Roth IRA at most banks, credit unions, brokerages, and investment companies. Common providers include Fidelity, Vanguard, Charles Schwab, Merrill Edge, and many local banks. You can also open one through your employer's payroll provider if they offer IRAs, though this is less common.
To open an IRA, you will need to provide your Social Security number, date of birth, address, and employment information. You will choose how to invest the money — options usually include mutual funds, stocks, bonds, or money market funds. The entire process can be done online in minutes.
To open a Solo 401(k), you work with a brokerage or financial services company that offers them. Providers include Fidelity, E*TRADE, Schwab, and others. You will need to provide the same personal information as for an IRA, plus details about your business. Some providers charge an annual fee to maintain a Solo 401(k), typically $100 to $300 per year, though some waive the fee if your balance meets a minimum.
Frequently Asked Questions
Can I open a 401(k) if I am unemployed or between jobs?
No, you cannot open a 401(k) on your own. If you are unemployed, you can open a Traditional or Roth IRA if you have earned income from self-employment or a side job. If you have no earned income at all, you cannot contribute to any retirement account until you return to work or start a business.
What if my employer offers a 401(k) but I want to open an IRA too?
You can open an IRA even if your employer offers a 401(k). However, if you have access to a 401(k) at work, your ability to deduct Traditional IRA contributions phases out based on your income. You can always open and contribute to a Roth IRA if your income is below the limit, regardless of whether you have a 401(k) at work.
Is a Solo 401(k) the same as a self-employed 401(k)?
Yes, Solo 401(k) and self-employed 401(k) are the same thing. It is also called an individual 401(k) or one-participant 401(k). The name varies by provider, but they all refer to the same account type designed for self-employed people with no employees other than a spouse.
Do I need a business license to open a Solo 401(k)?
No, you do not need a business license to open a Solo 401(k). You only need to have self-employment income. However, you do need a Social Security number or EIN (Employer Identification Number). Many self-employed people use their Social Security number, but if you have employees or prefer to keep business finances separate, you can obtain an EIN from the IRS for free.
Can I move money from a 401(k) to an IRA if I leave my job?
Yes, this is called a rollover. When you leave your job, you can roll over your 401(k) balance into a Traditional IRA without paying taxes or penalties, as long as you complete the rollover within 60 days. Your new IRA custodian can guide you through the process. This is different from opening a new IRA — you are moving existing retirement savings, not making new contributions.