How Much to Contribute to Your 401(k) Each Year

Start with what your employer will match, then increase from there

The amount you contribute to your 401(k) depends on three things: how much your employer will match, how much you can afford to set aside, and how much you want to have saved by retirement. Most people should contribute enough to capture their full employer match first—that is assistance programs you should not leave on the table. After that, increase contributions based on your budget and retirement goals.

There is no single "right" number that works for everyone. A 25-year-old with 40 years until retirement can afford to contribute less per year than a 50-year-old with 15 years left, because time and compound growth do more of the work. Someone earning $40,000 a year faces different trade-offs than someone earning $150,000. The goal is to find the amount that lets you save meaningfully without breaking your monthly budget.

Key Takeaways

• Contribute at least enough to capture your full employer match—typically 3 to 6 percent of your salary—because it is immediate, may provide return on your money.
• The IRS contribution limit for 2024 is $23,500 per year if you are under 50, and $30,500 if you are 50 or older; these limits change annually.
• A common benchmark is to save 10 to 15 percent of your gross income across all retirement accounts, though you may start lower and increase over time.
• Increasing your contribution by 1 percent each year when you get a raise is a low-pain way to save more without feeling the impact on your paycheck.
• Your take-home pay will drop when you increase contributions, but your taxable income also drops, which lowers your federal income tax bill.

Understand your employer match first

Your employer match is the most important number to know. Open your plan documents—usually called the Summary Plan Description or SPD—and find the section on employer contributions. It will tell you the match formula: for example, "100 percent of the first 3 percent you contribute, then 50 percent of the next 2 percent."

That formula means if you contribute 5 percent of your salary, your employer adds 4 percent (100 percent of the first 3 percent, plus 50 percent of the next 2 percent). If you contribute only 3 percent, you get only 3 percent from your employer—you leave 1 percent of assistance programs on the table. If you contribute 2 percent, you get 2 percent back, and you miss out on 2 percent.

The match is not may provide forever, but it is may provide as long as the plan exists and you meet the vesting schedule. Vesting means the period after which the employer's contribution becomes yours to keep if you leave the job. Some plans vest immediately; others vest over three to six years. Check your SPD for your plan's vesting schedule.

Calculate what you can afford after taxes and expenses

A 401(k) contribution comes out of your paycheck before federal income tax is calculated, so a $500 contribution does not cost you $500 in take-home pay. If you are in the 22 percent federal tax bracket, that $500 contribution costs you about $390 in take-home pay, because you also save $110 in taxes. This is called the tax advantage of a traditional 401(k).

To find what you can afford, start with your monthly take-home pay after taxes, insurance, and fixed expenses like rent, utilities, and food. What is left over? That is your discretionary money. You might allocate some to retirement savings, some to an emergency fund, some to debt payoff, and some to spending money. There is no rule that says retirement must come first—it depends on your situation.

If you have high-interest debt like credit cards, paying that down may return more money to your budget than saving for retirement 30 years away. If you have no emergency fund and a car that breaks down often, building three to six months of expenses in savings might be more urgent. Retirement savings works best when it fits into a complete financial picture, not when it squeezes out everything else.

Use the 10 to 15 percent benchmark as a starting point

Financial advisors often suggest saving 10 to 15 percent of your gross income (before taxes) across all retirement accounts—your 401(k), IRA, and any other retirement savings. This is a benchmark, not a rule. It assumes you are starting to save in your mid-20s and will work until your mid-60s. If you start later, you may need to save more. If you have other sources of retirement income, you may need less.

To calculate 10 to 15 percent of your gross income, take your annual salary and multiply by 0.10 or 0.15. If you earn $60,000 a year, 10 percent is $6,000 per year, or about $500 per month. If you earn $100,000, 10 percent is $10,000 per year, or about $833 per month. This includes your employer match, so if your employer contributes 4 percent, you only need to contribute 6 to 11 percent yourself to hit the 10 to 15 percent total.

The benchmark is useful because it gives you a target, but it is not a minimum. If you can only afford 5 percent right now, that is better than zero. If you can afford 20 percent, that is fine too. The best contribution rate is the one you can stick with consistently, because consistency over decades matters more than a high rate you abandon after a year.

Know the IRS contribution limits and catch-up rules

The IRS sets a maximum amount you can contribute to your 401(k) each year. For 2024, the limit is $23,500 if you are under 50 years old. If you are 50 or older, you can contribute an additional $7,500 per year as a "catch-up" contribution, for a total of $30,500. These limits change most years, usually increasing by $500 or $1,000 to keep pace with inflation.

Your employer's plan may have a lower limit than the IRS allows, so check your plan documents. Some plans also have a limit based on your salary—for example, you cannot contribute more than 50 percent of your compensation in a year. If you hit the IRS limit before the end of the year, your contributions stop automatically, and your employer match may stop too, depending on the plan.

The catch-up contribution is available the year you turn 50. You do not have to wait until your birthday; you can start contributing the higher amount at the beginning of the year you turn 50. If you are behind on retirement savings, the catch-up contribution is a way to accelerate without changing jobs or opening a separate account.

Increase contributions gradually when you get a raise

One of the easiest ways to save more without feeling the squeeze is to increase your 401(k) contribution whenever you get a raise. If you get a 3 percent raise, increase your contribution by 1 or 2 percent. Your take-home pay still goes up, but you are saving more for retirement at the same time.

For example, suppose you earn $50,000 and contribute 5 percent ($2,500 per year). You get a 3 percent raise to $51,500. Instead of keeping your contribution at 5 percent ($2,575), increase it to 6 percent ($3,090). Your contribution went up by $515, but your gross pay went up by $1,500, so your take-home pay still increased even though you are saving more.

This strategy works because you never see the money—it goes straight from your paycheck to the 401(k) before you get paid. Over 10 or 20 years of raises, your contribution rate can climb from 5 percent to 12 or 15 percent without any year feeling like a sacrifice.

Adjust your contribution if your life changes

Your contribution rate should change when your income, expenses, or goals change. If you get a promotion, you can afford to contribute more. If you have a child, you may need to contribute less temporarily. If you pay off a car loan or mortgage, you have more room in your budget to increase retirement savings.

Most plans let you change your contribution rate once a year during the open enrollment period, which is usually in the fall. Some plans allow changes at any time if you have a may have access to life event—marriage, divorce, birth of a child, loss of income, or significant change in expenses. Check your plan's rules or ask your HR department when you can make changes.

If you are behind on retirement savings and want to catch up quickly, increasing your contribution is one option. Another is to roll over money from an old 401(k) or IRA into your current plan, if the plan allows it. A third is to work a few years longer than you planned. Each option has trade-offs, and the right choice depends on your situation.

Frequently Asked Questions

What happens if I contribute more than the IRS limit?

Your plan administrator will stop your contributions once you hit the limit and refund the excess to you, usually with any earnings on that money. You will owe income tax on the refund and may owe a 6 percent excise tax on the overage. To avoid this, monitor your contributions throughout the year, especially if you change jobs or have multiple employers.

Should I contribute more if I am behind on retirement savings?

If you are 50 or older, use the catch-up contribution to add $7,500 more per year. If you are younger, increase your rate as much as your budget allows. You might also consider working a few years longer, which gives compound growth more time to work and reduces the number of years you need to fund in retirement.

Can I change my contribution amount mid-year?

Most plans allow changes during open enrollment in the fall. Some allow changes any time if you have a may have access to life event like a raise, job loss, or major expense. A few plans allow changes at any time. Check your plan documents or ask HR what your plan's rules are.

Does a higher contribution hurt my take-home pay as much as I think?

No. A traditional 401(k) contribution reduces your taxable income, so you pay less federal income tax. If you are in the 22 percent tax bracket and contribute $500, your take-home pay drops by about $390, not $500. The tax savings cushion the impact on your paycheck.

What if my employer does not offer a match?

Contribute what you can afford, starting with at least 5 to 10 percent if possible. Without a match, there is no assistance programs to capture, so the decision is purely about your own savings goals and budget. You might also open an IRA to save additional money with tax advantages.