5 Year-End Tax Moves for High Earners Before December 31
Sam's List Editorial | 2026-06-27
For high earners, the difference between a planned tax year and an unplanned one is often decided in the final weeks of December. Many of the most useful moves have a hard deadline of December 31, and once the calendar turns, the option is gone. Here are five year-end tax moves for high earners to consider before the deadline, each with the limits that decide whether it actually fits your situation.
A caution first: none of these is universally right. Each depends on your income, your accounts, and your goals, and some can backfire if applied carelessly. This is general information, not advice for your facts.
1. Max Out Tax-Advantaged Retirement Contributions
Contributing fully to available retirement accounts can reduce taxable income, and some accounts have year-end or filing-deadline timing. The limit: contribution caps and eligibility phase-outs apply, and the right account mix depends on your situation. Still, leaving room on the table is a common, avoidable miss.
2. Harvest Investment Losses
Selling investments at a loss can offset capital gains and, to a limited extent, ordinary income. The limit: wash-sale rules restrict repurchasing the same security too quickly, and harvesting should serve your overall strategy, not just the tax. Done thoughtfully with your advisor, it can meaningfully reduce a tax bill in a year with gains.
3. Time Charitable Giving
Bunching charitable contributions into one year, or using a donor-advised fund, can increase the value of itemized deductions. The limit: the benefit depends on whether you itemize and on deduction rules, so it is not automatic. For high earners with charitable intent, the timing can matter as much as the amount.
4. Consider a Roth Conversion
Converting traditional retirement funds to a Roth in a lower-income year can be powerful, paying tax now to avoid more later. The limit: it raises this year's taxable income and only makes sense under specific circumstances, so it is very much a plan-with-a-professional move. The window is the calendar year, which is why December matters.
5. Review Estimated Taxes and Withholding
High earners often underpay through the year and face penalties. A year-end check of estimated payments and withholding can avoid a surprise. The limit: this is about avoiding penalties, not reducing the tax itself, but it is a cheap, high-value review before the year closes.
Why Proactive Planning Beats April Filing
The theme is timing. By April, these moves are off the table; they had to happen by December 31. That is the difference between a tax preparer who files what happened and a planner who shapes it. Purewater Financial is a New York City Sam's List firm working with SMB owners, startups, real estate investors, and solopreneurs, the kind of partner for proactive, defensible planning rather than aggressive schemes. Confirm credentials and fit, and get advice specific to your situation before acting.
Review Purewater Financial's profile on Sam's List.
Frequently Asked Questions
When is the deadline for year-end tax moves? Many of the most impactful moves, like loss harvesting, Roth conversions, and charitable bunching, must be completed by December 31. A few, such as certain retirement contributions, can extend to the filing deadline. Because the rules differ by move, confirm each deadline with a professional.
What's the best tax move for a high earner? There is no single best move; it depends on your income, accounts, and goals. Maxing tax-advantaged retirement contributions, harvesting losses in a year with gains, and timing charitable giving are commonly valuable, but each has eligibility limits that determine whether it fits you.
Is a Roth conversion a good idea for high earners? Sometimes, particularly in a lower-income year, because you pay tax now to avoid potentially higher tax later. But a conversion increases current taxable income and only makes sense under specific circumstances, so it should be modeled with a tax professional before acting.
How do I avoid an underpayment penalty? Review your estimated tax payments and withholding before year-end to ensure you have paid enough through the year. High earners often fall short. A quick check can prevent a penalty, though it addresses the timing of payment rather than reducing the underlying tax.