How Much to Contribute to Your 401(k)

Start with what your employer will match

The most important number is your employer's match. If your company matches 3% of your salary and you contribute less than 3%, you are leaving information programs on the table. That match is an when ready return on your contribution — there is no investment that beats it.

Find your match percentage in your plan documents or ask your HR department. It is usually between 1% and 6% of your gross salary. If your employer matches 4%, you should contribute at least 4% to capture the full match. Contributing less means your employer stops matching at that lower amount.

Once you are getting the full match, you can decide whether to contribute more. The rest depends on your budget, your other savings, and how much you want to set aside for retirement.

Key Takeaways

• Contribute enough to capture your full employer match — this is the minimum threshold that makes financial sense.
• The IRS sets an annual contribution limit (the amount changes yearly), but most people contribute far less than that limit.
• A common target is 10% to 15% of your gross salary total, including your employer's match, though this depends on your age and retirement savings already in place.
• You can change your contribution percentage at any time during the year, so you do not have to lock in a number forever.
• If you cannot afford to contribute much right now, start with the match and increase your contribution when your salary rises or your budget allows.

How much to contribute beyond the match

Financial advisors often suggest aiming for 10% to 15% of your gross salary going into retirement savings total — that includes both what you contribute and what your employer contributes. If your employer matches 3%, you would contribute 7% to 12% yourself to hit that range.

This is a target, not a rule. Your actual number depends on when you started saving, how much you have already saved outside your 401(k), and what age you plan to retire. Someone who started saving at 22 needs to contribute less each year than someone who started at 35, because compound growth has more time to work.

If 10% to 15% feels impossible right now, start smaller. Contributing 4% to get the match is better than contributing nothing. You can increase your percentage when you get a raise, pay off a debt, or have more breathing room in your budget.

The IRS contribution limit and why it probably does not affect you

The IRS sets a maximum amount you can contribute to your 401(k) each year. This limit changes annually. In 2024, the limit is $23,500 for people under 50. If you are 50 or older, you can contribute an additional $7,500 as a "catch-up" contribution, for a total of $31,000.

These limits exist, but most workers never reach them. To hit the 2024 limit of $23,500, you would need to contribute about $1,958 per month. For someone earning $60,000 a year, that would be about 39% of gross salary — far more than the 10% to 15% target most people aim for.

You only need to think about the IRS limit if you earn a high salary and are trying to save as much as possible in tax-advantaged accounts. For most people, the limit is not a practical constraint.

How your age affects how much you should contribute

The younger you are, the less you need to contribute each year to reach a retirement goal, because your money has decades to grow. Someone who starts contributing at 25 can reach the same retirement balance at 65 by contributing less each year than someone who starts at 45.

If you are in your 20s or early 30s and just starting out, getting the employer match is the priority. If you are 40 or older and have not saved much yet, you may want to contribute more than 10% to 15% if your budget allows. At 50, the IRS lets you contribute extra through catch-up contributions, which is designed for this situation.

A rough guideline: aim to have saved one year of salary by age 30, three years by age 40, six years by age 50, and eight to ten years by age 60. If you are behind, increasing your contribution percentage is one way to catch up.

Adjusting your contribution when your salary changes

The easiest time to increase your 401(k) contribution is when you get a raise. If you get a 3% salary increase and increase your 401(k) contribution by 1%, you still take home 2% more money, but you are saving more for retirement without feeling the pinch as much.

You can change your contribution percentage through your plan's website or by contacting your HR or benefits department. Changes usually take effect in your next paycheck. There is no limit to how many times you can change it during the year, so you can adjust as your situation changes.

If you get a bonus, a tax refund, or an inheritance, that is another moment to consider increasing your contribution. You are not used to spending that money, so redirecting it to retirement savings often feels easier than cutting your regular budget.

What happens if you contribute too much or too little

If you contribute less than your employer's match, you lose the match for that year. You cannot go back and claim it later. This is the main downside of under-contributing.

If you accidentally contribute more than the IRS limit in a year, your plan administrator will catch it and return the excess to you, usually with any earnings it made. This is rare and happens mostly to people with very high incomes or multiple 401(k) plans.

If you contribute less than you planned because you had unexpected expenses, do not panic. Adjust your percentage back up when you can. Your 401(k) is a long-term account — one year of lower contributions will not derail your retirement if you get back on track.

Frequently Asked Questions

What if my employer does not offer a match?

Some small employers and nonprofits do not match 401(k) contributions. If yours does not, the match is not a factor in your decision. You can still contribute to the 401(k) for the tax advantages — your contributions reduce your taxable income for the year. Aim for the 10% to 15% target if your budget allows, or start with whatever percentage you can afford.

Can I change my contribution percentage mid-year?

Yes. You can change your contribution percentage at any time during the year through your plan's website or by contacting your benefits department. The change usually takes effect in your next paycheck. There is no penalty for changing it multiple times.

What if I cannot afford to contribute 10% right now?

Start with your employer's match, even if it is just 1% or 2%. Once you have captured the full match, increase your contribution by 1% each year or whenever you get a raise. Small increases add up over time, and you will reach 10% to 15% eventually without a sudden hit to your budget.

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

If you are over 50, you can use catch-up contributions to add extra money beyond the standard limit. If you are younger but behind, increasing your percentage to 15% or 20% if possible can help you catch up. You might also look at other savings accounts like an IRA or a taxable brokerage account to save more.

Does my contribution percentage stay the same every year?

No. You set a percentage of each paycheck, and that percentage stays the same unless you change it. So if you contribute 6% and your salary increases, your contribution amount increases automatically with your salary. You can adjust the percentage whenever you want.