Business owners often think of December 31 as a single tax deadline. In practice, year-end planning involves several timelines.
Some decisions must be made early enough to leave time for execution—such as purchasing equipment, arranging financing, or placing an asset in service before year-end. Others can wait until later in the quarter, when the full-year outlook is clearer. Certain steps may even be completed after January 1.
The best approach is to work backward from each year-end requirement. This reveals what needs immediate attention, what can wait, and what may carry into the new year.
Start Early When Execution Takes Time
Begin with decisions that require time to complete. In these cases, making the choice is only the first step; the transaction must also be finalized.
Consider a planned $100,000 equipment purchase. If you want depreciation to affect the current tax year, deciding to buy the machine in December may not be enough.
For Section 179 and bonus depreciation, qualifying property generally must be placed in service during the current tax year.
The machine may therefore need to be ordered, delivered, installed, and ready for business use before year-end. Financing requirements or long lead times make December too late to begin.
The same principle applies to transactions involving outside parties. If a strategy requires financing, legal documents, an appraisal, a plan administrator, or another professional, allow enough time to complete every step.
The tax deadline may be December 31, but the practical deadline could be in October.
Use Updated Forecasts to Guide Later Decisions
A second group of decisions can wait until your year-end results are easier to estimate. This is where October and November forecasting becomes especially valuable.
Suppose you initially expected $500,000 of annual income but now forecast $700,000. That change may affect retirement contributions, compensation, charitable giving, capital gains and losses, and other year-end strategies.
You may not need to act on every item in October, but you should identify which decisions require attention.
Retirement planning is one example. Depending on the plan and your circumstances, an elective deferral decision may be required before year-end even if the contribution can be funded later. November or early December may therefore be a reasonable time to decide.
Waiting until tax preparation is different. You may still be able to fund certain contributions, but you could lose the opportunity to make an election required during the prior year.
That is why forecasting comes first: make decisions when you have enough information to choose wisely and enough time to act.
Separate the Decision from Next Year’s Follow-Through
Finally, identify work that may be completed next year. Not every step must be finished in December; some actions may legitimately occur after January 1 if the underlying decision was made on time.
For example, certain employer retirement contributions may be funded after year-end.
A Section 179 election is generally made with the tax return, although the property itself must have been placed in service during the relevant tax year.
An S corporation election offers another example. If an existing calendar-year business wants S corporation treatment beginning January 1, the federal election generally does not need to be filed by December 31. The decision should still be made before the new year because payroll, reasonable compensation, bookkeeping, estimated taxes, and owner distributions may need to change. The filing deadline determines when the form is due; the business determines when an answer is needed.
This distinction is central to fourth-quarter planning: decide early enough to preserve the strategy, then complete any later steps on the appropriate schedule.
What to Do Now
- Identify time-sensitive items early. Review equipment purchases, financing, legal work, and transactions that must close before year-end.
- Update your full-year forecast. Use the latest information to make decisions that can reasonably wait until November or December.
- Separate decisions from later follow-through. Distinguish year-end choices from contributions, elections, and filings that may properly carry into the new year.
That is the purpose of fourth-quarter planning. By December, lead-time items should already be underway, forecast-dependent decisions should be nearing completion, and any work that may wait until next year should have a clear next step.
The goal is not to finish everything by December 31. It is to avoid losing an option because planning began too late.
If you have questions or want to discuss your circumstances, contact our office to speak with an advisor.