Don’t Miss These 2025 Year-End Deadlines for Your Investments

11/03/25

As the year winds down, it is easy to kick back and put finances on autopilot. But a few smart moves before you file your taxes can make a difference in your 2025 tax bill and set you up for a stronger start in 2026.

Here are the key investment, retirement, and savings deadlines for the 2025 tax year.

1. Retirement Contributions (Various Deadlines – See Below)

  • 401(k) and 403(b): Up to $23,000, plus a $7,500 catch-up if you’re 50 or older (12/31/25)

  • SIMPLE IRA: Up to $16,000, plus a $3,500 catch-up (12/31/25)

  • SEP IRA: The lesser of 25% of your compensation of $69,000 (04/15/26)

  • Solo 401(k): Up to $23,000, plus a $7,500 catch-up if you’re 50 or older (03/15/26 for S Corps and 04/15/26 for sole proprietors)

 

2. Health Savings Account (HSA) (Deadline - 04/15/26)

If you’re covered by a high-deductible health plan, your HSA offers a triple tax benefit: pre-tax contributions, tax-free growth, and tax-free withdrawals for qualified medical expenses.

For 2025, contribution limits are:

  • $4,300 for self-only coverage

  • $8,550 for family coverage

  • + $1,000 catch-up if you’re 55 or older

 

3. Roth Conversion (Deadline - 12/31/25)

A Roth conversion allows you to move money from a traditional IRA into a Roth IRA, paying taxes now so your future growth and withdrawals can be tax-free.

This can be a smart strategy if:

  • Your income is lower in 2025

  • You expect higher tax rates down the road.

 

4. Required Minimum Distributions (RMDs) (Deadline - 12/31/25)

If you’re age 73 or older, you must withdraw your RMD from traditional IRAs and most employer retirement plans. Missing this deadline can trigger a 25% penalty on the amount not withdrawn. If this is your first year taking your RMD, you have until 04/15/26.

 

5. Use Tax-Loss Harvesting to Offset Gains (Deadline - 12/31/25)

Selling investments at a loss can help offset realized capital gains and reduce your tax bill.

-          Take note of the wash-sale rule. This means you can’t buy the same or a “substantially identical” investment within 30 days before or after the sale to be able to claim the loss.

 

6. Make Charitable Gifts or Donor-Advised Fund Contributions (Deadline - 12/31/25)

Donations can count toward your 2025 deductions if you itemize. Contributing to a Donor Advised Fund can help with your tax bill even if you aren’t sure where to donate the funds yet.

 

7. Review Your Flexible Spending Account (FSA) (Deadline – 12/31/25)

Most FSA plans follow a “use it or lose it” rule by year-end, though some allow a small carryover or grace period. Check your balance now and spend remaining funds on eligible expenses like glasses, dental work, or over-the-counter medications before the deadline.

 

8. Plan Ahead for Estimated Taxes

If you make quarterly estimated tax payments, the fourth-quarter deadline is January 15, 2026. Reviewing your income now can help you avoid surprises in April and keep cash flow smooth through year-end.

Finish 2025 Strong

The final weeks of the year are a great time to take inventory, not just of your investments, but of your overall financial plan. A quick review now can uncover opportunities to reduce taxes, increase savings, and start 2026 with confidence.

If you’re unsure which strategies make the most sense for your situation, I am here to help you finish the year strong and move into 2026 with a clear plan.

 

*Do not use this as advice about your specific situation. Please contact me to talk about your specific situation. You are never charged for meetings or advice.

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