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December 02, 2025 | Posted in:

2025 Year-End Tax Strategies: How to Maximize Deductions Under the New Tax Law

New Rules, New Deductions, and What to Review Now

As 2025 winds down, taxpayers face one of the most important year-end planning seasons in recent memory. With significant changes from the One Big Beautiful Bill Act (OBBBA)—including a higher $40,000 SALT deduction, expanded retirement contribution rules, and tax-free treatment for qualified tips and overtime—your decisions between now and December 31 can meaningfully impact your 2025 tax bill.

Our Alloy Silverstein advisors compiled the most important year-end tax actions to consider now so you can reduce your taxable income, avoid surprises, and take full advantage of the new tax law before the year closes.

1. Maximize Retirement Contributions

Maximize your retirement savings while reducing your taxable income. There is still time to make contributions to employer retirement plans like a 401(k). Remember each year has a contribution limit and if you don’t take advantage of it, it is lost. And with law changes it is important to note:

  • Special bonus catch up contributions for those age 60 to 63 is $11,250 (up from $7,500) so leverage this rule if it applies to you.
  • Beginning in 2026 those with incomes above $125,000 can ONLY put catch up contributions in Roth employer retirement accounts. So plan accordingly this year AND next.

2. Take Advantage of the Higher $40,000 SALT Deduction

Don’t forget to leverage the new $40,000 tax limit for itemized deductions. This is up from $10,000. It may impact how you treat itemizing your tax return this year. (see our prior posts on this subject!)

3.Year-End Charitable Giving Strategies

Fund your final charitable donations before December 31st. Remember, your strategy here may change with new law changes, including the ability to deduct more of your taxes this year. Include in this review:

  • Donating appreciated stock owned one year or longer, either directly to a qualified charity or through a donor advised charitable trust.
  • If 70 1/2 or older consider making a qualified charitable donation (QCD) from a qualified retirement account. The limit in 2025 is $108,000 ($216,000 for married couples) and can serve as your required minimum distribution as well as being a tax saving tool. But ask for help here, as you need to do this correctly.
  • If you do not itemize, consider waiting until January 1, 2026 to make your donation.

4. Capital Gains and Loss Harvesting

Review your investment portfolio for capital gain and loss planning. In addition to the ideas already mentioned, remember you can net gains against losses AND you can use up to $3,000 in net capital losses to offset ordinary income.

5. Kiddie Tax & Gifting Opportunities for Families

Take steps to maximize the kiddie tax threshold and gift rules. $2,700 of unearned income can be taxed at your child’s lower tax rate and you can gift up to $19,000 per tax payer this year.

6. Year-End HSA and MSA Review

Review any medical funding accounts. Remember contributions to an Health Saving Account (HSAs), if you have this plan available to you, effectively saves money on all your qualified medical, dental and vision spending. Plus unused balances carry over from year to year. So maximize the annual contribution while there is still time. While Flexible Spending Accounts (FSAs) or Medical Savings Accounts (MSAs) do not have the same flexibility, it is good to review the rules now and take advantage of any plan available to you to ensure you do not lose this tax-free funding opportunity.

7. Overtime and Tip Earners: Review Eligibility and Recordkeeping Requirements

Prepare now for tax-free tips and overtime pay. If you have not already done so, review the approved occupations for qualified tips and confirm the amount of this benefit long before you receive documentation from your employer. The same holds true for overtime pay. Employers are not required to issue W-2s or 1099s with this breakout in 2025, so you will need to ensure the reporting you do receive is accurate.

8. Estimate Your Tax Liability

Has the new tax law affected your tax liability for this coming tax season? Review early in case you need to make any final estimated tax payments. Note the impact of:

  • Tax-free tips and overtime pay
  • The new $6,000 senior deduction ($12,000 if you and your spouse qualify)
  • Your current tax withholdings and make any adjustments
  • Any other impacts from the new tax laws (like interest paid on new car loans) and how it changes your situation

9. Consider a Year-End Roth Conversion

Check to see if you should rollover any tax-deferred retirement accounts into Roth accounts.

10. Organize Your 2025 Tax Documents Now

Last step, get prepared for tax filing. This includes:

  • Creating a list of expected W-2s and 1099s
  • Review of your tax withholdings
  • Issuing any required tax forms (especially if you have household employees)
  • Organization of your tax records

 

Infographic: 10 Year-End Tax Moves Before 2026

 

Consult with a Tax Planning Expert

Should you have any questions on these year-end tax planning ideas and strategies, ask for help. In many cases, the requirements and documentation needed are important to ensure you receive the full tax savings benefit. Your Alloy Silverstein accounting and advisory team is here to assist!

 

Tax Reform Resource Center for the One Big Beautiful Bill Act | Alloy Silverstein CPAs and Advisory

 

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