What if I stop or cut my 401(k) contributions?

Less than most people expect, as long as it is temporary. The balance you already have keeps compounding while you pause.

What you lose is the contributions themselves, the employer match that rode on them, and a year of tax-advantaged room that does not carry forward.

Put in your balance, what you contribute, and what your employer matches. Then choose how much to cut and for how long. “For good” runs the cut out to the full horizon rather than restoring it later.

The instinct is that stopping contributions stops progress. It doesn’t, and the reason matters for the rest of this page. Most of the growth in a mature portfolio comes from the balance you already have, not from this month’s deposit.

Someone with $400,000 invested at a 7% real return earns about $28,000 in a year without lifting a finger. Against that, a paused $1,500 a month is $18,000 of deposits that never arrive. Real, and smaller than the compounding running alongside it.

That ratio shifts with age, which is why the same pause produces very different answers. Early on, contributions are most of your progress and a pause hurts. Later, the balance does the heavy lifting and a year off is a rounding error by comparison.

An employer match is usually a percentage of what you put in, so cutting your own contribution takes the match down with it in proportion. Stop entirely and the match goes to zero.

This is the only part of the decision with an immediate return attached. A dollar-for-dollar match doubles the deposit on the day it lands, before any growth. No market assumption is involved and no time horizon is needed to justify it.

The calculator shows the match separately for exactly this reason. If you are cutting to free up cash, the arithmetic usually favors cutting down to your match threshold rather than past it.

The part people miss is not the money. It is the shelter. The elective deferral limit is an annual figure that resets, and unused room does not carry into the next year.

For 2026 the basic employee deferral limit is $24,500. Most people 50 and over may add another $8,000, which is $32,500 in total. In the calendar years someone turns 60, 61, 62 or 63 a higher catch-up applies instead: $11,250 for 2026, or $35,750 altogether. Check the current IRS figures and your own plan documents before relying on any of these. A year you skip is a year of that allowance gone permanently. You can save the same money afterwards in a taxable account, and it will grow, but it grows somewhere the tax treatment is worse.

For a single pause this is a footnote. For someone who cuts contributions for five years while paying for something else, it is five years of shelter that cannot be reopened.

Pausing and stopping look like the same decision on the day you make it. They separate quickly.

A pause has a floor. The delay it causes stops growing the moment contributions resume, and raising them afterwards claws some of it back. A permanent cut has no floor. The gap between the two paths widens every year until the day you stop working.

Set the calculator to “For good” and then to one year, with the same cut in both. The difference between those two answers is the real subject of this page.

The Scenarios Lab models this with the contributions lever pulled below zero. Set it to the amount you want to stop paying in and the length of the cut, and the Optional Date moves while you watch. Stack it with a sabbatical or a layoff to see what a pause costs on top of a break rather than instead of one.

• IRS — 401(k) limit increases to $24,500 for 2026, IRA limit increases to $7,500The 2026 deferral limit and the $8,000 catch-up at 50 and over.
• IRS — Retirement topics: catch-up contributionsThe $8,000 catch-up, and the higher $11,250 limit for the years you turn 60 through 63.
• IRS — Retirement topics: contributionsHow elective deferrals, employer contributions and catch-ups fit together, and that the limits are annual.

Can I reduce my contributions and still retire on time?

Often, if the reduction is temporary and you are already substantially funded. The calculator answers it for your numbers rather than in general, because the honest answer depends almost entirely on how much is already invested.

Is it better to cut contributions or cut spending?

Cutting spending lowers the target as well as freeing up cash, so it moves both sides of the calculation. Cutting contributions only moves one, and in the wrong direction. The Cut monthly expenses lever in the Lab runs that comparison.

What about pausing to pay off debt?

Nothing here models debt, so this page cannot score that trade. The piece it can tell you is what the pause costs in time, which is one half of a comparison worth making properly.

Does this apply to a 403(b) or a 457?

The arithmetic is the same and the deferral limits are similar, though the catch-up rules differ by plan type. The IRS pages linked above cover each one.