Year-End Tax Moves That Could Save You Thousands in 2025 — Explained by a CPA
Use this year-end tax checklist to secure valuable savings and avoid missing deductions and credits that disappear on December 31.
Are you prepared for the tax opportunities that disappear at year-end? Because the truth is, if you wait until January to start thinking about your taxes, you’re already too late. The most powerful tax strategies exist only until December 31st. And when the year ends, so do the opportunities. Today I’m going to show you the steps you should be taking right now, before year-end, to legally reduce your taxes. And these aren’t small strategies. These are the same techniques that the wealthy use every single year to reduce their tax bill. The only difference is that now, you’re going to know them too. So let’s get started.
Tip #1: Maximize retirement contributions
Increasing retirement contributions now allows you to reduce taxable income while strengthening long-term financial security. Retirement accounts remain one of the most powerful tax-saving tools available. If your employer offers a 401(k) or 403(b), make sure you are contributing enough to receive the full employer match. This is free money, and not taking it is like leaving part of your paycheck on the table. For 2024, you can contribute up to $23,000 to your employer plan, and an extra $7,500 if you’re age 50 or older. If you haven’t reached these limits yet, consider increasing your contributions before year-end.
For those of you who are self-employed, a Solo 401(k) or SEP IRA can allow massive contributions depending on your income, but these plans require setup steps before December 31st, even if contributions can be made next year. That’s the part most people miss. The plan has to be established before year-end.
Finally, if you’re making IRA contributions, remember that traditional IRA contributions may be deductible depending on your income and whether you or your spouse are covered by a retirement plan at work. Roth IRA contributions won’t give you a deduction now but grow tax-free forever, which is extremely powerful. The key is to understand how each retirement vehicle fits into your overall tax strategy for the year.
Tip #2 Backdoor Roth or Mega Backdoor Roth
Backdoor Roth or Mega Backdoor Roth strategies are invaluable for high-income earners who cannot contribute directly to a Roth IRA. These strategies are invaluable for high-income earners who cannot contribute directly to a Roth IRA. If your income is above the phaseout limits, a traditional Roth contribution is off the table—but a backdoor Roth may still be an option. This strategy involves contributing to a traditional IRA and then converting those funds to a Roth IRA. But there’s a catch: you must consider the pro-rata rule, which can make the conversion taxable if you have existing pre-tax IRA balances.
If your employer offers a Mega Backdoor Roth through your 401(k), this can allow contributions up to $69,000 in total for 2024, with some or all converting to Roth dollars. But not all employers offer this feature. If you have access to it, it’s one of the best ways to create huge pools of tax-free income for retirement.
These strategies can be complex and should be executed carefully. But for those who qualify, they can be among the most powerful tax tools available.
Tip #3: Tax-loss harvesting
Harvesting losses before year-end can offset gains and lower your tax burden without changing your long-term investment plan. With market volatility continuing, now is the time to take a look at your taxable investment accounts. Tax-loss harvesting lets you sell investments at a loss to offset your gains. This can reduce or even eliminate the taxes you owe on capital gains. If your losses exceed your gains, you can use up to $3,000 of those losses to reduce ordinary income and carry the rest forward to future years.
But be careful with the wash sale rule. If you buy the same or substantially identical security 30 days before or after selling it, your loss will be disallowed. You can avoid this by buying a similar investment that gives you the same exposure without violating the rule.
This strategy doesn’t change your overall investment plan—it simply reduces your taxes while keeping your portfolio aligned with your goals.
Tip #4: Accelerate deductions
Strategic timing of deductible expenses can shift tax benefits into the current year when they matter most. Many taxpayers—and especially business owners—can benefit from accelerating deductions into the current year. If you expect your income to drop next year or anticipate moving into a lower tax bracket, pulling deductions into this year can lower your tax bill when it matters most. Consider prepaying certain expenses, purchasing equipment you already planned to buy, or stocking up on supplies.
For individuals, bunching deductions is another strategy. Since many people don’t itemize every year due to the higher standard deduction, consider grouping deductible expenses such as medical costs or charitable contributions into a single year so you can exceed the standard deduction threshold.
The key is to be intentional. Don’t spend money just to get a deduction. Spend money that you were already planning to spend, but time it strategically.
Tip #5: Maximize Health Savings Account contributions
Fully funding your HSA leverages triple tax advantages that make it one of the most powerful savings tools available. If you’re enrolled in a High Deductible Health Plan, an HSA is one of the best tax-saving tools available because it offers triple tax benefits: contributions are tax-deductible, growth is tax-free, and withdrawals for qualified medical expenses are tax-free.
For 2024, you can contribute up to $4,150 for individual coverage and $8,300 for family coverage, plus an additional $1,000 if you’re 55 or older. Contributions can be made all the way until tax day next year, but increasing payroll contributions before year-end can help you reach the maximum while also reducing taxable income now.
HSAs function like long-term investment accounts when used properly. Many people don’t realize they can invest their HSA funds instead of spending them immediately, allowing them to grow for decades.
Tip #6: Increase Charitable Giving
Year-end charitable planning lets you support causes you value while maximizing potential tax deductions. For taxpayers who itemize deductions, charitable contributions can significantly reduce taxable income. If you’re planning to give, consider doing it before December 31st to claim the deduction for this year. Donor-Advised Funds allow you to make a large charitable contribution now—capturing the deduction—and distribute the funds to charities later.
If you have appreciated stocks, donating those instead of cash is one of the smartest moves you can make. You avoid capital gains tax and still get a deduction for the full fair market value. This double benefit is something most donors overlook.
If you’re over age 70½, Qualified Charitable Distributions from your IRA can also reduce your taxable income, especially if you don’t itemize deductions.
Tip #7: Use your Flexible Spending
Account before deadlines
Reviewing your FSA balance ensures you use eligible funds before they expire and avoid forfeiting money. FSAs operate on a use-it-or-lose-it basis. If you don’t spend the money you contributed, you may lose it at year-end unless your plan offers a small carryover or grace period. Many people forget about these accounts and end up wasting hundreds of dollars.
Eligible expenses include medical, dental, vision, and sometimes dependent care costs. Now is the time to check your remaining balance and schedule appointments or purchase eligible items.
Tip #8: Review your withholding
& estimated payments
Evaluating your withholding now can prevent penalties and reduce the chance of a surprise tax bill. Many taxpayers are surprised to learn that the IRS charges penalties for underpayment of taxes, even if they pay everything owed by April. To avoid penalties, you must pay taxes throughout the year, either through withholding or estimated payments. Review your paychecks and evaluate whether your withholding is sufficient.
If you’re self-employed, review your quarterly estimated payments and make adjustments if needed. Making an additional payment before year-end can prevent penalties and reduce interest charges.
Tip #9: Make 529 plan contributions
Contributing to 529 plans before year-end can secure state tax benefits and help you grow education savings tax-free. If you have children or grandchildren, 529 plans offer tax-free growth for education expenses. While contributions aren’t deductible on your federal return, many states offer tax benefits for contributions made before December 31st.
These plans can be used for college, K-12 tuition (in some cases), apprenticeships, and even certain student loan repayments. Year-end is a great time to make contributions if you want to take advantage of state tax deductions or credits.
Tip #10: Final opportunities for
energy-efficiency credits
Acting before year-end allows you to claim expanded energy-efficiency credits that lower both taxes and long-term home energy costs. The Inflation Reduction Act expanded energy credits for homeowners, covering items like heat pumps, insulation, windows, doors, and rooftop solar. These credits can significantly reduce your tax bill, but many of them reset annually. That means if you don’t claim them by December 31st, you may lose the opportunity for good.
Conclusion
Before we wrap up, remember this: tax planning should happen all year long, but the most valuable opportunities disappear at year-end. Waiting until tax season is too late because most strategies must be implemented before December 31st.
To ensure you’re not missing out, review your income, maximize deductions, consider retirement and savings strategies, and take advantage of every credit available to you.
I’m Michael Mellace with Pink Harbor, CPA. If you need help implementing these strategies or understanding how they apply to your situation, reach out. If you want your taxes handled by an expert, schedule an appointment online here, or call us directly at 856-226-9524.
