What you need before you start

You will need three things to open a retirement account: a government-issued ID, proof of income or employment, and a Social Security number. Some providers also ask for a current address and a phone number. If you are self-employed, you may need to show business income through a tax return or profit-and-loss statement from the past year.

The type of account you choose determines what else you might need. If you want an employer-sponsored plan like a 401(k), your employer's human resources or benefits department handles the setup—you do not choose the provider. If you are opening an individual retirement account (IRA) on your own, you pick the financial institution and can start with as little as $0 to $500, depending on the provider.

Have your most recent pay stub or tax return handy when you start. Providers use this to verify your income and determine whether you are may be able to access for certain account types. If you have changed jobs recently, bring documentation from both employers.

Key Takeaways

  • You need a government ID, proof of income, and a Social Security number to open any retirement account.
  • Employer 401(k) plans are set up through your company's benefits department, while IRAs you open yourself at a bank, brokerage, or credit union.
  • Traditional IRAs and 401(k)s reduce your taxable income now; Roth accounts tax you now but let withdrawals grow tax-free.
  • Most providers let you start with $0 and add money whenever you can, though some have minimum opening deposits of $500 to $1,000.
  • The entire process usually takes one to three business days once you submit your information.

The difference between a 401(k) and an IRA

A 401(k) is an employer-sponsored plan. Your company offers it, deducts contributions from your paycheck, and often matches a portion of what you put in. You cannot open a 401(k) on your own—your employer must offer one. If your company has a plan, the benefits department will give you enrollment materials, usually during your first week or during an annual open enrollment period.

An IRA (Individual Retirement Account) is opened by you, at a financial institution of your choice. You fund it with your own money, and there is no employer match. IRAs come in two main types: Traditional and Roth. With a Traditional IRA, you may reduce your taxable income in the year you contribute. With a Roth IRA, you pay taxes now, but your withdrawals in retirement are tax-free. The choice depends on whether you expect to be in a higher or lower tax bracket when you retire.

If your employer offers a 401(k), that is usually the better starting point because of the employer match—it is information programs. If your employer does not offer a plan, or if you are self-employed, an IRA is your main option.

How to enroll in a 401(k) through your employer

When you are hired, your human resources department will give you enrollment materials or direct you to an online portal. You will choose how much of each paycheck to contribute (usually a percentage of your salary), select your investment options from the plan's menu, and confirm your beneficiary—the person who receives the money if you die.

The enrollment process itself takes 15 to 30 minutes. You do not need to bring documents; the company already has your information. Your contributions begin on the next payroll cycle or within two weeks, depending on your company's schedule. Some employers require you to enroll within 30 days of hire; others let you enroll anytime. Check your employee handbook or ask HR for the important date.

If your employer matches contributions, ask HR what the match formula is. A common match is 50 cents for every dollar you contribute, up to 6 percent of your salary. To get the full match, you need to contribute at least that percentage. Anything less means you are leaving information programs on the table.

How to open an IRA on your own

Choose a financial institution first. Banks, credit unions, and online brokerages all offer IRAs. Compare their minimum opening deposits (many have none), annual fees, and investment options. Once you have decided, you can open an account online, by phone, or in person.

The online process usually takes 10 to 15 minutes. You will enter your personal information, Social Security number, and income details. You will choose between a Traditional or Roth IRA. You will name a beneficiary. Then you will link a bank account so you can transfer money into the IRA. Some providers let you fund the account when ready; others wait one to two business days for the bank link to verify.

After your account is open, you can invest the money however the provider allows. Some institutions offer only their own mutual funds or stocks. Others let you buy a wide range of investments. If you are not sure what to invest in, many providers offer target-date funds—these automatically adjust from stocks to bonds as you get closer to retirement age.

Contribution limits and how much to start with

For 2024, you can contribute up to $7,000 per year to an IRA if you are under 50, or $8,000 if you are 50 or older. For a 401(k), the limit is $23,500 under 50, or $31,000 at 50 and above. These limits change yearly. You do not have to hit the limit to open an account—you can start with $50 or $100 and add more later.

If you are just starting out, financial advisors often suggest contributing enough to your 401(k) to get the full employer match, then opening an IRA if you have money left over. This order maximizes the information programs from your employer. After that, increase contributions whenever your salary goes up or you have extra cash.

You can contribute to both a 401(k) and an IRA in the same year, but your total IRA contributions across all IRAs cannot exceed the annual limit. If you have a Traditional IRA and a Roth IRA, they share the same $7,000 limit combined.

What happens after you open the account

Once your account is open and funded, your money sits in whatever investments you chose. You do not have to do anything else unless you want to change your investments or add more money. Most people set up automatic transfers from their paycheck or bank account so contributions happen without them thinking about it.

You will receive statements from your provider—usually quarterly or annually—showing your balance and how your investments performed. You can log into your account online anytime to check your balance or make changes. If you change jobs, you can roll your 401(k) into an IRA or into your new employer's plan; this does not trigger taxes or penalties if done correctly.

You cannot withdraw money from a retirement account before age 59½ without a penalty, with a few exceptions like hardship withdrawals or first-time home purchases. The penalty is 10 percent of the amount withdrawn, plus you owe income tax on it. This is why retirement accounts are separate from regular savings—the rules are designed to keep the money there until you actually retire.

Common mistakes to avoid

The biggest mistake is not enrolling in your employer's 401(k) at all, especially if there is a match. Even contributing 3 percent of your salary is better than nothing, because you get the match on top of it. Another common error is choosing the wrong IRA type without understanding the tax difference. If you are young and expect higher income later, a Roth usually makes more sense. If you are older and want to lower your taxes now, a Traditional IRA is the better choice.

Do not worry about picking the "perfect" investment. Most people do better with a straightforward target-date fund than trying to pick individual stocks. You can always change your investments later. Also, do not close an old 401(k) when you leave a job—roll it into an IRA instead. Cashing it out triggers taxes and a 10 percent penalty, and you lose years of tax-deferred growth.

Frequently Asked Questions

Can I open a retirement account if I am self-employed?

Yes. You can open a Traditional or Roth IRA like anyone else. You can also open a SEP-IRA or Solo 401(k), which allow higher contributions if you have business income. A tax professional can help you decide which type makes sense for your situation.

What if I do not have a Social Security number?

You need a Social Security number or Individual Taxpayer Identification Number (ITIN) to open a retirement account. If you do not have one, you will need to obtain it before opening an account. Contact the Social Security Administration or the IRS depending on your situation.

Can I have more than one IRA?

Yes, you can have multiple IRAs at different institutions. However, your total contributions across all IRAs cannot exceed the annual limit. If you have a Traditional IRA and a Roth IRA, they share the same $7,000 limit combined.

How long does it take to open a retirement account?

Online enrollment for a 401(k) takes 15 to 30 minutes, and contributions start on the next payroll cycle. Opening an IRA online takes 10 to 15 minutes, and the account is usually ready to fund within one to two business days. In-person or phone enrollment may take slightly longer.

What if my employer does not offer a 401(k)?

Open an IRA on your own at a bank, credit union, or brokerage. You can contribute up to $7,000 per year if you are under 50. If you have significant self-employment income, a SEP-IRA or Solo 401(k) may allow larger contributions.