Many people don’t think about their taxes until springtime, but putting it off could mean owing more.

If you want to try to lower your tax bill, the important date isn’t in April — it’s Dec. 31. Tax pros say you still can make a few money-saving maneuvers before the calendar seals the fate of your 2016 return.

  • Offset capital gains. If you’ll have capital gains to reckon with, consider selling off some underperformers in your portfolio, says tax adviser Grant Keebler of Keebler & Associates in Green Bay, Wisconsin. The IRS lets investors use some capital losses to offset taxable capital gains, which means, for example, a $4,000 loss you take on a stock by Dec. 31 might effectively cancel out $4,000 in capital gains during the year.

Donating appreciated assets such as stocks to charity also could help avert capital gains tax. Giving away $1,000 worth of stock that you bought for $100 could garner a $1,000 donation write-off, for instance, and save you from paying capital gains tax on $900 profit you would have made from its sale.

  • Stoke your savings. If you haven’t already, consider maxing out the contribution limit on a traditional IRA (in 2016, it’s $5,500 if you’re under 50 and $6,500 if you’re older) if you’re eligible to deduct all or part of your contributions, says Robin Baum, a CPA and managing partner at accounting and consulting firm Zinner & Co. in Beachwood, Ohio. Whether you can deduct those contributions is a function of income and other factors.

And here’s some other good news: You can make contributions to an IRA for the prior year until the current year’s tax-filing deadline. That means IRA contributions for 2016 can be made all the way up to the April 2017 filing deadline.

Contributing to a 529 plan for college savings could be another last-minute option. There’s no federal tax deduction for those contributions, but you might qualify for a state tax deduction. Contributions may only be deductible if they’re going into a plan run by the state you live in.

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  • Stay away. Retirees who split their time between homes in different states may be able to cut their tax bills by spending the last few days or weeks of the year in the state with lower taxes, Keebler says. The rules can be complex, but living in a particular state for more than half the year often dictates whether that state can tax certain types of income.