The 401k contribution limits 2027 are projected to rise to $25,500 for employee deferrals, up $1,000 from the official 2026 limit of $24,500 — but the IRS has not announced the official 2027 limits yet, so that $25,500 figure is a projection, not a final number. If you are already maxing out your 401k or getting close, that extra $1,000 of room matters, and the smart move right now is to understand the projected numbers, keep contributing against the 2026 limit for the rest of this year, and wait for the IRS notice before changing your payroll settings.
Does a $1,000 increase really change anything? Honestly, for most people it will not transform their retirement overnight. But if you have been bumping against the ceiling year after year, an extra thousand dollars of tax-advantaged space is real money — especially when you add the employer match on top. And for savers in their fifties and early sixties, the projected catch-up increases could matter even more. So let us walk through what we know for sure, what is still only a projection, and exactly what to do with that information before the IRS makes it official.
One thing to say up front, plainly: this article is general education, not tax advice. Everyone's situation is different — your tax bracket, your employer's plan rules, your other retirement accounts — so if you want advice tailored to your own finances, talk to a qualified tax professional or financial adviser.
What Are the 401k Contribution Limits 2027?
The projected 401k contribution limits 2027 put the employee elective deferral limit at $25,500. That is the amount you, as an employee, can put into your 401k from your own paychecks during the year, before taxes in a traditional 401k or after taxes in a Roth 401k. The projection comes from Milliman, a well-known actuarial firm, which published its final estimate on 15 October 2026. Their estimate is not a guess pulled from thin air: the statutory formula that sets these limits is effectively locked in once the September 2026 inflation data is known. The September 2026 CPI-U came in at 336.940, with the third-quarter average at 335.279, and those numbers point to a $1,000 increase.
But — and this is the part you must not miss — the IRS has not announced the official 2027 limits yet. As of 3 November 2026, there is no IRS notice, no news release, and no official confirmation. The $25,500 figure is a projection based on the inflation formula, and while the formula has historically produced exactly the number the IRS later announces, it is still not official until the IRS says so. So treat $25,500 as very likely, not certain.
When will we know for sure? The IRS usually announces the next year's retirement limits in mid-November. The official 2026 limits were announced on 13 November 2025, in IRS Notice 2025-67 and news release IR-2025-111. The 2027 notice is expected soon, on a similar timetable. Until it lands, nothing about 2027 is set in stone — and that includes the catch-up limits and the IRA limit, which we will get to in a moment.
Why Do the Limits Change Every Year?
It is a fair question, and one a lot of people never think to ask. The short answer is inflation. Congress designed these limits to rise with the cost of living, so that a dollar saved for retirement keeps roughly the same purchasing power over time. The IRS uses the Consumer Price Index for All Urban Consumers (CPI-U) to adjust the limits, rounding to the nearest $500. That is why the increases come in $500 steps — $23,500 in 2025, $24,500 in 2026, and a projected $25,500 in 2027 — rather than in odd amounts like $137.
Some years, inflation is not high enough to trigger a full $500 step, and the limit stays flat. That is what happened in several years over the past decade. But 2026's inflation picture was strong enough to push the formula over the line again, which is why Milliman's final estimate lands at $25,500. If you want the technical detail, the key inputs are already fixed: September 2026 CPI-U of 336.940 and a third-quarter average of 335.279. Those are the numbers the formula runs on, and they are not going to change now.
2026 Official Limits vs 2027 Projected Limits
Here is the cleanest way to see the whole picture at a glance. The 2026 column is official — announced by the IRS in Notice 2025-67. The 2027 column is projected, based on Milliman's final estimate of 15 October 2026. Do not mix the two up when you are planning, and definitely do not set your 2027 payroll deferral to the projected numbers until the IRS notice arrives.
| Limit | 2026 (Official) | 2027 (Projected) | Status |
|---|---|---|---|
| Employee elective deferral | $24,500 | $25,500 | 2026 Official / 2027 Projected |
| Catch-up contribution, age 50+ | $8,000 | $8,500 | 2026 Official / 2027 Projected |
| Total with 50+ catch-up | $32,500 | $34,000 | 2026 Official / 2027 Projected |
| Super catch-up, ages 60–63 | $11,250 | $11,750 | 2026 Official / 2027 Projected |
| Total with super catch-up | $35,750 | $37,250 | 2026 Official / 2027 Projected |
| IRA contribution limit | $7,500 | $8,000 | 2026 Official / 2027 Projected |
| Total annual additions (employee + employer) | $72,000 | $75,000 | 2026 Official / 2027 Projected |
Look at that table for a second. Every single line moves up in the projection — deferrals, catch-ups, IRAs, and the overall ceiling. That is good news for savers, but it is also a reminder of how the system works: the limits are supposed to keep pace with prices, not to make anyone rich. The real value is not the headline number. It is what you do with the extra room, year after year, for decades.
The Official 2026 Limits, Explained
Before we go further into 2027, it helps to be clear on where things stand today, because your 2026 contributions are still governed by the 2026 limits until 31 December. For 2026, the official IRS limits are: an employee elective deferral of $24,500, up from $23,500 in 2025; a catch-up contribution of $8,000 for workers aged 50 and over, bringing their total to $32,500; and a SECURE 2.0 super catch-up of $11,250 for workers aged 60 to 63, bringing their total to $35,750.
What is this "super catch-up" thing? It is a newer rule, created by the SECURE 2.0 Act, and it is genuinely worth knowing about if you are in your early sixties. For a long time, the only catch-up was the standard one for workers 50 and older. SECURE 2.0 added a bigger one — but only for a narrow window, ages 60 through 63. The idea is simple: those are often the highest-earning years of a career, and the last real chance to top up a retirement account before retirement begins. So Congress gave that age group a larger catch-up. In 2026 it is $11,250 on top of the regular $24,500, for a total of $35,750 of your own money.
There is also the IRA limit to keep in mind. For 2026, the official IRA contribution limit is $7,500. That applies to traditional and Roth IRAs combined — you cannot put $7,500 in each. And then there is the big ceiling most people never hit: total annual additions, which is your contributions plus your employer's contributions together. For 2026 that ceiling is $72,000. Most workers will never come near it, but if you are a high earner with a generous employer match and profit-sharing, it is the number that caps everything.
A Quick Reality Check on the 2026 Numbers
How many people actually max out their 401k? Far fewer than you might think. Industry data consistently shows that only a small minority of workers contribute the full limit. Most people contribute somewhere between 5% and 10% of their pay — often just enough to get the full employer match, which is sensible, but far below the ceiling. So if you are reading this and thinking "I am nowhere near $24,500," you are in the majority. That is fine. The limits are a ceiling, not a target you have to hit to be doing retirement right. The projected 2027 increase matters most to the people who are already at or near the ceiling — and if that is you, keep reading, because the next sections are written for you.
2027 401k Contribution Limits: What the $25,500 Projection Means for You
So what does a projected $25,500 limit actually change in real life? Let us be honest about it. For someone earning $100,000 a year, moving from $24,500 to $25,500 means going from deferring 24.5% of pay to 25.5% of pay. That is a meaningful commitment, and it is not something most households can do casually. The people who will feel this increase most are the ones already maxing out — high earners, dual-income households, and workers in their peak earning years who treat the 401k limit as their annual savings target.
Here is the maths that makes the increase worth caring about, even if $1,000 sounds small. An extra $1,000 a year, invested for twenty years, is not just $20,000. With investment growth, it can be considerably more — and because it goes in before tax in a traditional 401k, it also reduces your taxable income in the year you contribute it. That is the quiet power of these limits: small annual increases, repeated over a career, add up to real money. Nobody gets rich from a single year's $1,000 bump. People build comfortable retirements from thirty years of bumping the number up, little by little.
But there is a trap here, and it is the whole reason this article keeps repeating the word "projected." If you go to your employer's benefits portal today and set your 2027 deferral based on $25,500, you are acting on a number the IRS has not confirmed. In practice, most payroll systems will not even let you set 2027 elections until the plan year rolls over, and your employer's plan administrator will use the official IRS figures once they are published. Still, the principle matters: do not lock in decisions — and definitely do not make financial commitments — based on a projection. Wait for the notice. It is expected soon, and the wait costs you nothing.
What If the IRS Announces a Different Number?
Could the official number differ from $25,500? It is unlikely, because the formula inputs are already locked in and Milliman's estimate is final. But "unlikely" is not "impossible," and the IRS has the final word. If the official figure came in at $25,000 instead of $25,500, anyone who had already planned around $25,500 would need to adjust. That is a small headache — but it is exactly the kind of headache you avoid by waiting a few more weeks. Patience here is free, and it is the right call.
2027 401k Catch-Up Limit: What Savers Over 50 Should Know
The catch-up limits are where the projected 2027 numbers get genuinely interesting, especially for older workers. The standard catch-up for workers aged 50 and over is projected to rise from $8,000 in 2026 to $8,500 in 2027. That means a worker aged 50 or older could put away $34,000 of their own money in 2027 — $25,500 in regular deferrals plus the $8,500 catch-up — if the projection holds.
And then there is the super catch-up. For workers aged 60 to 63, the SECURE 2.0 super catch-up is projected to rise from $11,250 in 2026 to $11,750 in 2027. Add that to the projected $25,500 deferral limit and you get a total of $37,250 of your own contributions in a single year. That is a serious amount of retirement saving, and it reflects the deliberate design of SECURE 2.0: give people in their early sixties — often their highest-earning years — the biggest possible window to save.
Why does this matter so much? Because the years just before retirement are when catch-up contributions do the most good. You are likely earning more than you ever have, your mortgage may be paid down or nearly so, and the kids may be out of the house. The money you put in now has less time to grow than money you put in at thirty, but it still has years to compound — and in a traditional 401k, every dollar you defer also cuts this year's tax bill. If you are 60, 61, 62 or 63 and you have not been using the super catch-up, 2027 is worth a serious look.
One detail worth flagging: the super catch-up only applies at ages 60, 61, 62 and 63. Once you turn 64, you go back to the standard age-50 catch-up. It is a narrow window by design, so if you are in it — or about to enter it — do not let the years slip by. And remember, all of these 2027 catch-up figures are projections, just like the headline $25,500. The IRS notice will confirm them, and until then they are best treated as very likely, not final.
IRA Limit 2027: The Projected $8,000 Figure
The IRA limit 2027 projection is $8,000, up from the official 2026 limit of $7,500. That is a $500 increase, and it follows the same inflation formula as the 401k limits. Like the 401k figures, it is a projection until the IRS announces it — but it is derived from the same locked-in inflation data, so it is expected to hold.
Why does the IRA limit matter if you already have a 401k? Because the two accounts work together. Many people contribute to a 401k at work and also hold an IRA on the side, and the combined room across both accounts is what shapes a full retirement savings plan. An IRA also gives you investment choices your employer's 401k plan might not offer, and a Roth IRA in particular gives you tax-free withdrawals in retirement, which is a different — and valuable — kind of tax treatment from a traditional 401k.
A practical note: the IRA limit is a combined limit across traditional and Roth IRAs. You cannot put $8,000 into a traditional IRA and another $8,000 into a Roth IRA. It is $8,000 total across both. And the IRA catch-up for people aged 50 and over — which is $1,000 under current law — is a separate figure that is not part of this projection, so do not assume it has changed. If you are planning your 2027 IRA contributions, use the projected $8,000 as a planning figure and confirm it when the IRS notice lands.
If you want to read the official 2026 figures straight from the source, the IRS announcement is the place to start: IRS announces 2026 401k limit of $24,500 and IRA limit of $7,500. For the rules behind the limits in general, the IRS also publishes retirement plan contribution limits guidance for 401k and profit-sharing plans. Both are worth bookmarking, because when the 2027 notice is published, it will appear through the same IRS channels.
HSA Limits 2027: Already Official
Here is a welcome change of pace: unlike the 401k and IRA limits, the HSA limits 2027 are already official. The IRS announced them in May 2026, in Revenue Procedure 2026-24, and they are not projections at all. For 2027, the Health Savings Account contribution limit is $4,500 for self-only coverage and $9,000 for family coverage.
Why were the HSA limits announced so much earlier? The IRS follows a different timetable for HSAs than for retirement plans, and the HSA figures are typically released in the spring of the year before they take effect. That is genuinely useful for planning, because it means you can already make firm 2027 decisions about your HSA, even while the 401k numbers are still pending.
If you have a high-deductible health plan and access to an HSA, do not overlook it in your retirement planning. An HSA is the only account in the US tax system that is triple tax-advantaged: contributions go in tax-free, growth is tax-free, and withdrawals for qualified medical expenses are tax-free. After age 65, you can even withdraw HSA money for non-medical expenses — you just pay ordinary income tax on it, like a traditional IRA. For many people, maxing out the HSA before adding extra to the 401k is one of the smartest moves in the whole retirement playbook. And with the 2027 limits already confirmed at $4,500 and $9,000, there is no reason to wait to plan around them.
What to Do Before the IRS Announces the 401k Contribution Limits 2027
So what should you actually do right now, in November 2026, while the official 2027 numbers are still pending? Here is a simple, practical checklist. None of it requires the IRS notice, and all of it puts you in a stronger position when the announcement arrives.
1. Keep Contributing Against the 2026 Limit Until 31 December
This is the most important item on the list, and the easiest to get wrong. Your 2026 contributions still count against the 2026 limit — $24,500, or $32,500 with the age-50 catch-up, or $35,750 with the super catch-up — until 31 December. The projected 2027 numbers do not apply to a single dollar you contribute this year. If you have room left under your 2026 limit and you can afford to fill it, the end of the year is your deadline. Once 1 January arrives, that 2026 room is gone for good. You cannot go back and top it up later.
If you are paid monthly or twice a month, check how many pay periods are left in 2026 and do the maths. Can you raise your deferral percentage for the remaining paychecks to use the room you have left? Many payroll systems let you change your deferral percentage quickly, sometimes effective from the very next pay period. It is worth a look — but only if your budget can handle it. Never stretch yourself so thin that you cannot cover your bills.
2. Do Not Set 2027 Payroll Caps Until the IRS Notice Lands
This one is simple, but it bears repeating because it is the mistake this whole article is trying to prevent. Do not set your 2027 payroll deferral cap to $25,500 — or to any 2027 figure — until the IRS publishes its official notice. The projection is very likely right, but your payroll department and your plan administrator will work from the official numbers, and if you try to jump the gun you risk confusion, rejected elections, or contributions that have to be corrected later. Wait for the notice. It is expected soon, in mid-November, and the wait costs you nothing.
What you can do now is prepare. Work out what deferral percentage would get you to the projected $25,500 at your salary, and have the number ready. That way, when the IRS notice drops, you can update your election the same day instead of scrambling to do the arithmetic. Preparation is free; premature action is not.
3. Check Your Current Deferral Percentage and Employer Match
When was the last time you actually looked at your 401k deferral percentage? If you set it years ago and never touched it again, it may no longer match your salary, your goals, or your employer's match formula. Log in to your plan portal and check three things: your current deferral percentage, whether you are getting the full employer match, and whether your contributions are on track to hit the limit you intend — 2026's $24,500, or whatever your personal target is.
The employer match deserves special attention. It is, quite literally, free money — your employer adds money to your retirement account simply because you contributed. Yet a surprising number of workers leave part of the match on the table by contributing less than the percentage required to get the full match. Before you worry about the 2027 limits at all, make sure you are capturing every dollar of match available to you in 2026. That is a guaranteed, immediate return that no market investment can promise.
If your budget is tight, it can also help to look at the wider picture of your money. Understanding how everyday spending and saving fit together makes it easier to find room for retirement contributions. For a broader look at how American households are handling their money right now, see our earlier piece on US consumer spending and the savings rate. And if extra income is part of your plan for funding a bigger 401k contribution, our look at how many Americans have a side hustle in 2026 shows how common that strategy has become. For seasonal spending pressure that can squeeze your savings at exactly the wrong time of year, our holiday spending survey 2026 is a useful reality check before December arrives.
4. Remember Who the $1,000 Rise Matters Most For
Let us be honest about who benefits from the projected increase. The $1,000 rise matters most for people already maxing out or close to it. If you are contributing $5,000 a year, the limit moving from $24,500 to $25,500 changes nothing for you directly — you are not near the ceiling. Your priority should be raising your contribution rate gradually, capturing the full employer match, and building the habit. The limit is not your problem yet, and that is perfectly fine.
But if you are at $24,500 this year, or at $22,000 and climbing, the extra room is real. Plan for it. Think about whether your 2027 budget can absorb another $1,000 of deferrals — that is roughly $83 a month, or about $38 per biweekly paycheck. For many maxed-out savers, that is a manageable step. And if you are in the 50-plus or 60-to-63 groups, the catch-up increases add even more room: $500 more on the standard catch-up, $500 more on the super catch-up. Small numbers, repeated annually, are how retirement balances are built.
Common Mistakes to Avoid With the 2027 Limits
A few mistakes come up every year when new limits are announced, and they are all avoidable. First, do not confuse the employee deferral limit with the total annual additions limit. Your $25,500 (projected) is your own money. The $75,000 (projected) total includes your employer's contributions too. Second, do not assume the IRA limit and the 401k limit are the same thing — they are separate accounts with separate limits, and the projected IRA limit for 2027 is $8,000. Third, do not forget that Roth 401k contributions count toward the same deferral limit as traditional 401k contributions. You cannot put $25,500 in a traditional 401k and another $25,500 in a Roth 401k. It is one combined limit.
Fourth — and this one catches people out — do not assume your employer's plan automatically lets you contribute the maximum. Some plans have their own rules, such as limiting highly compensated employees, or capping deferrals at a percentage of pay. Your plan document is the final authority on what you can actually contribute, whatever the IRS limit says. If in doubt, ask your plan administrator or your HR team. That is what they are there for.
Frequently Asked Questions
What are the 401k contribution limits for 2027?
The 401k contribution limits 2027 are projected at $25,500 for employee elective deferrals, according to Milliman's final estimate of 15 October 2026. The standard catch-up for workers aged 50 and over is projected at $8,500, the SECURE 2.0 super catch-up for ages 60 to 63 is projected at $11,750, and total annual additions are projected at $75,000. The IRS has not announced the official 2027 limits yet, so all of these figures are projections until the IRS notice is published, which is expected in mid-November.
Has the IRS announced the official 2027 401k limits?
No. As of 3 November 2026, the IRS has not announced the official 2027 limits. The IRS usually announces retirement limits in mid-November — the 2026 limits were announced on 13 November 2025 — and the 2027 notice is expected soon. Until it is published, the $25,500 figure is a projection based on the inflation formula, not an IRS announcement.
What is the IRA limit for 2027?
The IRA limit for 2027 is projected at $8,000, up from the official 2026 limit of $7,500. Like the 401k figures, this is a projection until the IRS confirms it. The $8,000 limit applies across traditional and Roth IRAs combined, not $8,000 in each.
Should I change my 401k contributions now for 2027?
Not yet. Keep contributing against the official 2026 limit of $24,500 until 31 December, make sure you are getting your full employer match, and wait for the IRS notice before setting your 2027 payroll elections. You can work out in advance what deferral percentage would reach the projected $25,500 at your salary, so you are ready to update your election the day the official numbers are announced.
The Bottom Line
The projected 401k contribution limits 2027 give savers a little more room: $25,500 in employee deferrals, $8,500 in the age-50 catch-up, $11,750 in the super catch-up for ages 60 to 63, an $8,000 IRA limit, and a $75,000 total additions ceiling. The already-official HSA limits for 2027 — $4,500 for self-only coverage and $9,000 for family coverage — are the one set of numbers you can plan around with total confidence today.
But the headline is not the projection. The headline is the discipline: use the 2026 room you still have before the year ends, capture your full employer match, and wait for the IRS notice before you set anything in stone for 2027. A $1,000 increase will not change your retirement on its own. Twenty years of steady increases, matched contributions, and patient compounding just might. So check your deferral percentage this week, do the maths on the projected numbers, and be ready to act the moment the IRS makes it official. Your future self will be glad you did.
Reminder: this article is general education, not tax advice. For guidance about your own situation, speak to a qualified tax professional or financial adviser.