Spring is a long way off, but you can still get a jump on your taxes. Here are 5 ways you can decrease your tax bill next April:

Contribute to your 401(k) or 403(b) account by the end of the year. That’s going to reduce your income, but your tax bill will also decrease. For each of these accounts, you can contribute up to $18,000 per year, plus an additional $6,000 per year if you are over 50.

If you have outstanding, un-reimbursed expenses from your employer, it might help you to pre-pay them before the end of the year. Business owners should pre-pay them before the new year, because it allows them to deduct those expenses from this year’s taxes.

These would be costs like rent, insurance, supplies and subscriptions. You can deduct these expenses if they are above 2% of your adjusted gross income, and that will decrease your tax bill in the spring.

If you plan to rebalance your portfolio, look at some of your investments that have losses. It might make sense to dump them and be able to deduct them for the year.

You can deduct up to $3,000 of your portfolio losses each year. If your losses are more than $3,000, you can continue to carry them forward each year.

Do you get a tax refund every year? You might want to consider a Roth conversion. Instead of getting money back and investing it in a taxable account (or spending it,) you can gain some additional money into an after-tax Roth.

There are no taxes on Roth withdrawals after age 59 1/2, and no required minimum distributions at 70 1/2.

Did you receive a buyout or a large bonus this year? You may want to pay estimated tax, especially if your state has an income tax. It may help you avoid a tax penalty for an underpayment, and it could also help you avoid or reduce your alternative minimum tax.

If you choose to make estimated payments, you would make them the same year you received the buyout or bonus. So reducing your tax liability this year will have a greater impact than it will next year. Plus, an underpayment of 100% paid from the previous year will incur a penalty.

Doing just one of these things could help you save a lot of money during the tax season. Check out these additional tips for how to avoid a large tax bill and commonly overlooked tax deductions.