Year-End Tax Moves to Make Before December 31

Tax preparation in the spring is mostly reporting what already happened — there is very little left to change by then. Year-end planning is the opposite: it is the window where a handful of decisions made before December 31 can genuinely change what you owe. Miss the window and most of these options simply close for the year.

Look at the calendar, not just the checklist

Before running through specific moves, get a real read on where the year stands: roughly what the business earned, roughly what personal income looks like, and whether this year is unusually high or low compared to a typical year. Every move below depends on that picture. Timing decisions that make sense in a high-income year can be the wrong call in a lower-income one.

Timing income into or out of the current year

If you have some control over when income lands — a service business that can send a December invoice in early January instead, or a contractor deciding whether to close out a job before or after year-end — that timing can shift income between tax years. This matters most when you have a clear sense that one year will be meaningfully higher or lower income than the other; pushing income into a lower-income year, or pulling a deduction into a higher-income year, is a legitimate and common strategy. It only works with real planning before the year ends, not as a reaction while preparing the return months later.

Timing deductible expenses the same way

The mirror image applies to expenses. If you are planning a purchase you already intend to make in January anyway — supplies, equipment, a needed repair — pulling it into December instead can move the deduction into the current tax year if that is where you want it. This is not about spending money you would not otherwise spend. It is about deciding which tax year absorbs an expense you already planned to incur.

Equipment purchases and the placed-in-service deadline

If a business purchase qualifies for accelerated depreciation or first-year expensing, the equipment generally has to be purchased and placed in service — actually in use, not just ordered — by December 31 to count for that tax year. A truck ordered in November that does not arrive and get put into business use until January belongs to next year's return, not this year's. If equipment is part of your year-end plan, confirm realistic delivery and in-service timing well before the deadline, not the week of it. The specific rules and limits on accelerated depreciation change periodically, so this is a purchase-timing conversation worth having with your preparer before you commit to the order.

Retirement contributions

Certain retirement account contributions have to be made by December 31 to count for the current tax year, while others — notably many contributions tied to a business, like a SEP-IRA — can sometimes be made as late as the extended filing deadline the following year, well after December 31. Which rule applies depends entirely on the type of account, so do not assume you have until tax time for every option. If you are weighing which type of retirement account fits a self-employed business, that decision itself is worth making before year-end, since account setup deadlines can also fall before December 31 depending on the account type.

Charitable giving before the year closes

Charitable contributions are only deductible in the year they are actually made — a pledge made in December but paid in January belongs to next year. If itemizing deductions makes sense for your situation this year, get any planned giving done and documented before December 31, and keep the receipt or acknowledgment letter. Whether itemizing beats the standard deduction depends on your full picture of deductible expenses for the year, which is worth checking before assuming a charitable gift will move the needle.

Reviewing withholding and estimated payments

Late in the year is the best time to catch an underpayment problem while there is still time to fix it. If you are a W-2 employee, adjusting withholding on a final paycheck or two can still meaningfully change what gets paid in by year-end, because withholding is treated as paid evenly throughout the year regardless of when it actually happens. If you are self-employed and paying quarterly estimates, a year-end review of actual income against what you have paid in lets you catch a shortfall before the final estimated payment, rather than discovering an underpayment penalty after the fact in the spring.

Closing the books cleanly

For a small business, the best year-end move is often the least glamorous one: reconcile the year's books before year-end, not after. Confirm every bank and card statement has been captured, chase down any missing receipts while people still remember what they were for, and get an accurate read on actual year-to-date profit. A Mineral Wells small business owner who does this in December walks into tax season with real numbers instead of a guess — which makes every other decision on this list easier to make correctly, and makes the return itself faster and cheaper to prepare.

A short list to work from

• Get a realistic estimate of this year's income compared to a typical year.
• Decide whether any income or deductible expenses should shift between this year and next.
• Confirm any planned equipment purchase can realistically be placed in service by December 31.
• Confirm retirement contribution deadlines for your specific account type — some are due by December 31, others are not.
• Finish and document any planned charitable giving.
• Review withholding or estimated payments against actual year-to-date income.
• Reconcile the business books before the year closes, not after.

This article is general information, not tax advice. Current-year contribution limits, depreciation rules, and deadlines change and should be confirmed with a professional before you act on any of these.

Want a real year-end review instead of guessing? Call RD Precision Tax Service in Weatherford at (817) 480-6649, or request a free estimate. Robert has been preparing taxes for individuals and small business owners across Weatherford and Parker County since 2017, and a short year-end conversation before December 31 often saves far more than the same conversation held in April.