Year-End vs. January Close: How Transaction Timing Can Affect Your Tax Bill

When you’re working toward the sale of a business, there are plenty of reasons to keep a deal moving. Financing, due diligence, negotiations, and buyer expectations can all influence the timeline, and the longer a deal stretches out, the more opportunities there are for something to change. As a transaction approaches year-end, there’s one additional question worth asking: Does it make more sense to close before December 31 or wait until January?

A difference of just one day can move a transaction into a different tax year. Depending on how the deal is structured, that timing can affect the tax rate applied to portions of the gain, the value of available deductions, and when the resulting tax liability ultimately needs to be paid.

There isn’t one answer that works for every transaction, but if your deal is approaching year-end, modeling both scenarios before signing on the dotted line can uncover important differences. Here’s what to pay attention to.

Why the Timing of a Business Sale Matters

When a transaction is approaching year-end, timing can have a meaningful impact on the seller’s after-tax proceeds. Moving a closing from December 31 to January 1 may only be a difference of one day, but it moves the transaction into an entirely different tax year, changing how income, deductions, and tax rates may work together.

This can be especially important in an asset sale or deemed asset sale, such as certain transactions involving an F reorganization. The gain may be divided between assets taxed at ordinary income rates and those taxed at capital gains rates. Because those rates can differ significantly, when the transaction closes and when the related income and deductions are recognized can make a meaningful difference in the overall tax outcome.

To illustrate how these factors can work together, we’ll use one hypothetical transaction throughout this article. The transaction itself stays the same. The variable we’ll change is the closing date: December 31 versus January 1.

Our Example

*Relevant to the PTE tax and transaction bonus portion of our example.

As we work through the example, we’ll look at three areas where that one-day difference can matter: the Section 199A deduction, transaction bonuses and PTE taxes, and the time value of money.

Consideration #1: The Section 199A Deduction

One place the timing difference can show up is the qualified business income deduction under Section 199A. For taxpayers who qualify, Section 199A may provide a deduction equal to 20% of qualified business income, which can include some of the ordinary income generated as part of a business sale. The deduction is subject to several limitations, including limitations tied to W-2 wages and qualified business property. That becomes important when a transaction crosses into a new tax year.

Applying that to our example, the business has W-2 wages during the current year that may help support the Section 199A deduction. If the transaction closes in January, those wages may no longer be available in the same way to support the deduction associated with the sale. Under the assumptions we’ve modeled, that difference could effectively increase the tax rate on certain ordinary income from 29.6% to 37%. On $318,000 of net ordinary income, closing in January rather than December could result in approximately $23,500 of additional tax.

That’s the first way our example illustrates the potential impact of timing. The transaction hasn’t changed, but moving the closing into a new tax year changes how one potential tax benefit may apply. This doesn’t mean December is automatically the right answer. There are still other factors to consider…

Consideration #2: Transaction Bonuses and PTE Taxes

Now let’s add the transaction bonuses and pass-through entity (PTE) tax expense from our example. PTE tax elections may allow state taxes associated with entity-level gain to generate a federal deduction. At the same time, transaction bonuses can create additional ordinary deductions. Together, those deductions can significantly change the ordinary income picture surrounding a transaction.

In our example, the $1.5 million of ordinary gain, $3 million of transaction bonuses, and approximately $886,500 of PTE tax expense result in an ordinary loss of approximately $2.39 million. That raises an important question: When can that loss be used, and what type of income will it offset?

If the transaction closes before year-end, the deductions may be available to offset ordinary operating income the business generated earlier in the same year. If the transaction closes in January, however, the seller may have little or no ordinary operating income in the new tax year. The deductions could instead offset income taxed at lower capital gain rates, making them less valuable from a tax perspective. Under the assumptions in our example, moving the closing into January could result in approximately $229,000 of additional tax.

The potential tax savings depend on how much ordinary income is available to offset and the tax rate that applies to that income. In our example, the taxpayer has sufficient ordinary income in the current year to benefit from deductions at the highest ordinary income tax rate, while a January closing would leave primarily capital gains to offset.

Again, the economics of the transaction haven’t changed. The $1.5 million of ordinary gain, $10.5 million of capital gain, transaction bonuses, and other assumptions remain the same. What changed is when the transaction occurred and how the related income and deductions interact. For a seller choosing between two closing dates separated by only one day, that can be a significant difference.

Consideration #3: The Time Value of Money

So far, our example appears to favor the December closing… but the analysis isn’t finished. Moving the transaction into January can also change when the resulting tax liability needs to be paid. Depending on the seller’s circumstances and estimated tax requirements, a January closing may allow the seller to retain a significant amount of cash longer. That creates another potential economic benefit: the time value of money.

In the scenario we modeled, closing in January could defer a significant portion of the tax liability into the following tax cycle. If those retained dollars are invested in the meantime, they have the opportunity to generate additional returns. One scenario in our analysis produced approximately $71,000 of additional investment earnings from retaining those tax dollars longer. That benefit helps offset some of the additional tax associated with the January closing. It may not eliminate the difference entirely, but it’s an important part of understanding the full economic impact.

This is why the decision shouldn’t be reduced to one question: Which closing date creates the lowest tax bill? A more useful question is: Which closing date produces the strongest overall economic outcome after considering taxes, deductions, payment timing, and the value of retaining those dollars longer?

What Does Our Example Show?

Looking at the transaction as a whole makes it easier to see why the closing date deserves careful consideration.

Our example shows why there isn’t a universal answer to our December-versus-January question. One closing date may create a more favorable tax outcome, while the other may provide a meaningful cash-flow advantage. The important point is to evaluate those effects together.

Model the Tax Impact Before You Set the Closing Date

There are plenty of non-tax reasons a buyer and seller may prefer one closing date over another, and tax considerations shouldn’t derail an otherwise strong transaction. As you can see, when a deal is already approaching year-end, the difference between closing in December and January can be significant enough that it deserves attention.

Rather than relying on general rules of thumb, model both scenarios using the actual facts of the transaction. Consider the character of the gain, Section 199A eligibility, PTE taxes, transaction bonuses and other deductions, estimated tax requirements, and the time value of money. A few days of planning before the transaction closes can have a meaningful impact on what the seller ultimately keeps.

At Redpath, our Transaction Advisory and Tax teams work together to help business owners understand these tradeoffs before a deal closes. If you’re considering a year-end transaction, we can help you evaluate the options and understand how timing may affect your after-tax proceeds. Modeling the outcomes and choosing the right timing begin with a conversation.

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Frequently Asked Questions

Is it better to sell a business before or after year-end?

There isn’t a universal answer. Closing before year-end may allow certain transaction-related deductions to offset current-year ordinary income and may preserve tax benefits such as the Section 199A deduction. Closing after year-end may defer the resulting tax liability and allow the seller to retain those funds longer. The right answer depends on the structure of the transaction and the seller’s individual tax situation, and it requires modeling to explore the options.

Can moving a business sale from December to January change the amount of tax I owe?

Yes. Even though the closing dates may be only one day apart, moving a transaction into a new tax year can affect the availability and value of deductions, the treatment of ordinary versus capital gain income, and the timing of tax payments. For larger transactions, those differences can be significant.

When should tax planning begin for a year-end business sale?

Ideally, well before the closing date is finalized. Modeling different closing dates early gives the seller and transaction team time to evaluate potential tax consequences alongside the financial and operational considerations driving the deal. Waiting until the transaction is ready to close may limit the planning options available.