Year-End Tax Tips for 2025: What to Know Before the New Year
With the end of the year fast approaching, now is the time to take action and resolve all your tax matters. Below, we have listed our year-end tax tips for 2025 to help you take advantage of all available opportunities while being compliant and avoiding tax problems.
Review Your Income, Deductions, and Withholdings
Double Check Your W-2s, 1099s, and Income Sources
To avoid issues with the IRS, ensure you have all the necessary forms and information readily available. Forms like W-2s and 1099s are used to report your income sources, such as wages, freelance earnings, dividends, or other taxable income.
Double-checking for details is one of our crucial tax tips for 2025. Besides confirming accurate personal information, such as name and Social Security number, check for other discrepancies. If any are discovered, contact your employer and resolve the issue as soon as possible.
Adjust Withholdings If Needed
Improper tax withholding can result in overpaying or underpaying taxes, potentially triggering tax audits or other tax issues. Review your withholdings, especially after major life changes such as marriage, the birth of a child, or a job change, as these can significantly impact your tax status and liability.
Moreover, if you owe a large tax bill or received a substantial refund last year, adjusting your withholdings can help better align your payments with your tax obligation.
Make use of the IRS Tax Withholding Estimator or consult a tax professional to fine-tune your W-4 forms for optimal results.
Maximize Retirement Contributions Before the Deadline
401(k) & Traditional IRA Contributions
Maximizing retirement contributions, such as those to 401(k) and IRA accounts, is a year-end tax tip that can help reduce your overall taxable income and boost your savings.
Moreover, these retirement accounts have tax-deductible benefits. It’s essential to note, however, that there are certain eligibility restrictions and limitations, so please ensure you understand them. For example, individuals under the age of 50 can contribute $23,500 to both traditional and Roth 401(k) plans in 2025.
Consider Roth Conversions Strategically
Unlike a traditional IRA, a Roth IRA allows you to withdraw tax-free in retirement. However, note that converting from a traditional to a Roth IRA, which involves transferring funds from a traditional account to a Roth, will result in taxable income in the year of conversion.
Lastly, take into account your overall tax brackets and consider future income predictions. This can help you determine the impact of your conversion.
Don’t Miss Out on Tax-Advantaged Savings Accounts
Health Savings Accounts (HSA)
Having an HSA, or Health Savings Account, helps cover medical expenses while also growing your investments and taking advantage of tax breaks—an ideal combination for a retirement plan.
HSA contributions are tax-deductible, grow tax-free, and withdrawals for qualified medical purposes are also tax-exempt. Like most savings accounts, there are specific requirements that must be met.
For example, applicants must be registered in a high-deductible health plan that meets the IRS’s deductible and out-of-pocket maximum requirements, and the status cannot be claimed as a dependent on someone else’s tax return, such as your parents.
Flexible Spending Accounts (FSA)
FSAs are tax-advantaged retirement accounts, usually offered by employers, that allow you to set aside some funds from your paycheck to spend on eligible expenses. These FSA contributions are tax-free.
Eligible expenses include healthcare costs, such as medical bills, as well as dependent care FSA expenses, such as childcare, preschool, or eldercare. Putting money into an FSA ensures that you have cash available in the event of an emergency, all of which is tax-free.
Review and Harvest Capital Gains & Losses
Review and manage capital gains and losses from your investments to minimize your tax bill.
Review your portfolio and sell any investments that have lost value before the end of the year to offset gains and reduce your taxable income. Keep an eye out for trading fees and ensure your sales align with your long-term investment objectives.
Make Strategic Charitable Donations
Donating to charity causes is one approach to save money on taxes while also helping important causes. Donations to eligible charities, such as 501(c)(3) organizations, can be deducted up to 60% of the taxpayer’s adjusted gross income (AGI) if itemized.
Another strategy for donating while saving on taxes is to donate an investment that has increased in value. For example, if you have a $3,500 stock that you have held for a year and its value has increased to $7,000, donating it allows you to deduct the entire $7,000 without paying taxes on the $3,500 gain.
When making donations, ensure they are made by the December 31, 2025, deadline, and maintain accurate records of all documents. Also, ensure that the charities you want to donate to meet the IRS’s qualifications.

Final Thoughts: A Smart Finish for a Strong Start
Getting all your tax matters sorted out before the new year is the recipe for avoiding tax issues and starting the new year off strong.
As you can see, there are numerous ways for you to save on taxes and critical expenses while increasing your savings and lowering your taxable income. All the choices presented here are viable, but they may not be suitable for everyone due to varying needs and goals.
Therefore, the key is to choose the right options by considering your specific situation. Consult a tax professional to assist you in sorting out your taxes and devising the best approach for avoiding tax difficulties and maximizing your rewards.
Greenberg Law specializes in all aspects of tax law. We have a team ready to help you every step of the way!



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