The 2026 Tax Deadline That Could Affect Your Retirement Savings in 2027

October 2026 – As 2026 draws to a close, holiday plans, family gatherings, and preparing for the new year may be at the top of your mind. But before the calendar turns to January, there is another important item worth your attention: your retirement finances.

Some retirement planning decisions have deadlines that fall on December 31. Others give you additional time into the following year. Knowing the difference could help you avoid unnecessary tax complications and make more informed decisions about your retirement savings.

Whether you are approaching retirement or already enjoying it, the final months of 2026 offer an opportunity to review your retirement accounts, tax situation, and financial goals before certain deadlines pass.

Why Year End Tax Planning Matters for Retirement

Retirement planning involves more than deciding how much money to save. It also involves understanding when money goes into your accounts, when it comes out, and how those transactions may affect your taxes.

The decisions you make before December 31 could influence your taxable income for 2026, the balance of your retirement accounts entering 2027, and your broader retirement income strategy.

For example, someone who is still working may have an opportunity to contribute more to a workplace retirement plan. Someone who has already retired may need to confirm that required distributions have been completed.

These are different situations, but they share one important consideration: waiting until the new year could mean missing an opportunity or deadline.

Review Your 2026 Retirement Contributions

If you are still working and contributing to a 401(k), the final months of the year are a good time to review how much you have contributed.

For 2026, the IRS increased the employee contribution limit for most 401(k) plans to $24,500. Workers who are eligible to make additional contributions based on their age may be able to contribute more.¹

Contributions made through payroll generally need to be arranged before the end of the calendar year to count toward 2026.

That makes October, November, and December important months for reviewing your contribution elections, especially if you have not yet reached your intended savings amount.

However, contributing the maximum is not necessarily the right decision for everyone. Your current income, cash needs, expected retirement date, and overall tax situation should all be considered.

Understand the Special Contribution Rules for Ages 60 Through 63

If you are between ages 60 and 63, there is an additional retirement savings provision worth knowing about.

For 2026, eligible participants in most 401(k) plans can make an additional $11,250 in catch up contributions beyond the regular $24,500 contribution limit. This is higher than the standard $8,000 catch up contribution available to eligible workers ages 50 and older.¹

For someone who qualifies and whose plan permits these contributions, the combined 2026 employee contribution limit could reach $35,750.

This provision may be particularly relevant to individuals approaching retirement who want to make the most of their remaining working years.

It is important to remember that workplace plans have their own administrative requirements. Certain higher earners must also make catch up contributions on a Roth basis beginning in 2026, depending on their prior year wages and applicable plan rules.

Before adjusting your contributions, confirm your eligibility and available options with your plan administrator.

Make Sure Required Minimum Distributions Are Addressed

For retirees who have reached the applicable age, required minimum distributions, commonly called RMDs, are another important year end consideration.

An RMD is the minimum amount that generally must be withdrawn each year from certain retirement accounts, including traditional IRAs and many employer retirement plans.

Under current rules, RMDs generally begin for the year an account owner reaches age 73, although special rules and exceptions can apply.

For most individuals who are already taking RMDs, the annual deadline is December 31.

There is an exception for the first required distribution, which may be delayed until April 1 of the following year. However, choosing that option can result in two required distributions during the same calendar year.

Failing to withdraw the required amount on time may result in an additional tax unless an exception or relief applies.²

If you are already retired, now is a good time to confirm whether you have satisfied your 2026 distribution requirements.

Even if your financial institution helps calculate the amount, it is important to verify that the required distribution has actually been completed.

Consider Whether a Roth Conversion Fits Your Tax Strategy