Here's a misconception worth correcting: most people treat tax planning as something that happens in April. In reality, April is just the reporting deadline — the decisions that actually lower your tax bill happen before December 31. Once the calendar flips to January, your options shrink fast.
With only about 100 days left in 2026, there's still time to make meaningful moves. Here's the short version of what to look at right now.
Quick Answer: Year-end tax planning means using the time before December 31 to reduce your 2026 taxable income through retirement contributions, HSA funding, strategic deductions, and timing of income or losses. Most of these opportunities expire at midnight on December 31 — 401(k) and employer-plan contributions especially cannot be made retroactively.
1. Max Out Your Workplace Retirement Plan
The IRS raised the 401(k) employee contribution limit to $24,500 for 2026 (up from $23,500 in 2025). Every dollar you contribute reduces your taxable income dollar-for-dollar. If you're not on pace to hit the limit, call HR and adjust your deferral rate now — payroll cutoffs are real, and they come before December 31.
Age 50 or older? You can add another $8,000 in catch-up contributions for a total of $32,500. And if you turn 60, 61, 62, or 63 this year, the SECURE 2.0 "super catch-up" lets you contribute up to an additional $11,250 instead — bringing your total potential deferral to $35,750, if your plan allows it.
High earners, heads up: Starting in 2026, if your 2025 FICA wages from your plan's sponsoring employer exceeded $150,000, your catch-up contributions must be made as Roth (after-tax) contributions. Check with your plan administrator before year-end.
2. Fund Your IRA — But Know the Rules
The IRA contribution limit rose to $7,500 for 2026 ($8,600 if you're 50 or older, thanks to the SECURE 2.0 inflation adjustment on the catch-up amount). Here's the deal: IRA contributions can technically be made up until April 15, 2027, so this one isn't a hard December 31 deadline. But the sooner you contribute, the sooner the money goes to work.
Roth IRA eligibility phases out at $153,000–$168,000 MAGI for single filers and $242,000–$252,000 for married couples filing jointly. If you're just over those limits, a backdoor Roth conversion may still be an option — but talk to a tax professional first, because the pro-rata rule can bite.
3. Use Your HSA Before You Lose the Year
If you're enrolled in a high-deductible health plan, your Health Savings Account is one of the few accounts with a triple tax advantage: contributions are pre-tax, growth is tax-free, and withdrawals for qualified medical expenses are tax-free too. The 2026 HSA limits are $4,400 for self-only coverage and $8,750 for family coverage — both up from 2025. You can make HSA contributions up to April 15, 2027 for the 2026 tax year, same as IRAs.
4. Review Capital Gains and Losses
If you have investment accounts outside of retirement plans, now is a good time to review what's up and what's down. Selling losing positions before year-end can offset capital gains you've already realized in 2026 — a strategy called tax-loss harvesting. Short-term gains (assets held one year or less) are taxed at ordinary income rates, which are higher than long-term rates, so holding timing matters. Assets in tax-advantaged accounts like 401(k)s and IRAs aren't subject to capital gains taxes in the year of the transaction.
5. Consider a Roth Conversion Window
If your income is lower in 2026 than you expect it to be in future years — maybe you changed jobs, had a business slowdown, or are in a gap year — that temporary dip creates a window to convert pre-tax retirement funds to a Roth IRA at a lower tax cost. You'll owe income tax on the conversion amount now, but qualified future withdrawals come out completely tax-free. The math works best when you convert only enough to fill up your current tax bracket without crossing into the next one.
6. Don't Forget Year-End Charitable Giving
Cash donations to qualified charitable organizations are deductible if you itemize. If you're 70½ or older, a Qualified Charitable Distribution (QCD) lets you transfer up to $108,000 directly from your IRA to a qualified charity — it counts toward your Required Minimum Distribution and is excluded from your taxable income entirely, even if you don't itemize.
Frequently Asked Questions
What is the 401(k) contribution limit for 2026?
The employee elective deferral limit is $24,500. If you're 50 or older, you can contribute an additional $8,000 in catch-up contributions for a total of $32,500. If you're between ages 60 and 63, the super catch-up limit is $11,250 instead of $8,000, for a possible total of $35,750 — if your plan allows it.
What is the IRA contribution limit for 2026?
The combined traditional and Roth IRA contribution limit is $7,500 for those under 50 and $8,600 for those 50 and older (including a $1,100 catch-up). This limit applies across all IRAs you own — not per account.
Do I have to contribute to my 401(k) before December 31?
Yes. Workplace retirement plan contributions must be made through payroll before December 31, 2026. They cannot be made retroactively after year-end. IRA and HSA contributions, by contrast, can be made up until April 15, 2027 for the 2026 tax year.
Who should consider a Roth conversion before year-end?
Anyone who is in a temporarily lower income year and expects their tax rate to be higher in retirement should evaluate a Roth conversion. It works best when you can convert just enough to fill up your current bracket without triggering a higher rate. A tax professional can help you find that sweet spot.
What is the HSA contribution limit for 2026?
For 2026, the HSA limit is $4,400 for self-only coverage and $8,750 for family coverage. Those age 55 and older can contribute an additional $1,000 as a catch-up. You must be enrolled in an IRS-qualifying high-deductible health plan to contribute.
Can I contribute to both a 401(k) and an IRA in 2026?
Yes. The $24,500 401(k) limit and the $7,500 IRA limit are completely separate. A saver under age 50 can put away up to $32,000 across both in 2026. Income and workplace plan coverage may affect how much of the IRA contribution is tax-deductible.
Still have time — but not a lot of it.
Year-end tax planning is one of those things that sounds like it can wait until later. It can't. The moves that reduce your 2026 tax bill have hard deadlines, and several of them are coming up fast. If you're not sure where to start or want someone to run the numbers with you, our team at Champion Tax & Financial Services is here to help.
This article is for general informational purposes only and does not constitute personalized tax, legal, or financial advice. Tax rules and contribution limits are subject to change. Please consult a qualified tax professional for guidance specific to your situation.
Reality check: The IRS doesn't grade on effort — only on what you actually did before midnight on December 31.
