Your business had a great year. Revenue increased. Profits were strong. You may have even left much of the money in the business.
Then your personal tax return is prepared, and you discover that you owe significantly more than you expected.
For owners of pass-through businesses, this can be one of the most confusing parts of the tax system.
The amount of cash you take out of your business and the amount of business income you may be taxed on are not necessarily the same thing.
Understanding that distinction—and planning for it during the year—can help make your personal tax situation much more predictable.
Why Does Business Income Show Up on My Personal Tax Return?
Many small businesses are structured as pass-through entities.
Generally, partnerships and S corporations don't pay federal income tax in the same way a traditional C corporation does. Instead, each owner's share of taxable business income is reported to the owner, typically on a Schedule K-1, and flows through to the individual's tax return.
That means a profitable year for your company can also mean a higher personal tax liability.
This is why your business tax planning and individual tax planning shouldn't happen separately. What happens in your company can directly affect what happens on your personal return.
Can I Owe Tax on Money I Didn't Take Out of the Business?
Yes. And this is often where the surprise begins.
Suppose your share of an S corporation's taxable income is $250,000, but you didn't receive $250,000 in cash. Some of the money may have remained in the company to support operations, purchase equipment or provide working capital.
You may still generally be taxed on your share of the company's taxable income.
That's different from simply being taxed on the amount you withdrew from the business.
Understanding the difference between business income and cash distributions is critical when planning for your personal taxes.
Why Aren’t Taxes Automatically Withheld From Business Profits?
Employees are accustomed to having federal and state income taxes withheld from each paycheck.
Pass-through business income works differently. Taxes generally aren't automatically withheld from your share of the company's profit.
As a result, business owners may need to make estimated tax payments during the year.
If profits increase significantly but estimated payments remain based on prior-year results, the gap between what you've paid and what you ultimately owe can become substantial.
Regular tax projections can help identify that problem before filing season.
How Does Owner Compensation Affect the Picture?
For S corporation owners who work in the business, compensation adds another layer.
An owner may receive wages through payroll as well as distributions from the company. Those two types of payments aren't treated identically for tax purposes, and S corporations are generally required to pay shareholder-employees reasonable compensation for services provided before making non-wage distributions.
This isn't an area where a one-size-fits-all formula works.
Compensation should reflect the owner's actual role and circumstances, and it should be reviewed periodically as the business changes.
What Else Can Increase a Business Owner’s Personal Tax Bill?
Your business isn't the only factor affecting your individual return.
Investment income, capital gains, a spouse's earnings, rental income, retirement distributions, K-1 income from other entities and other financial activity can all contribute to your total tax picture.
A business owner may therefore have a perfectly reasonable tax strategy at the company level but still experience an unexpected personal tax bill because something changed elsewhere.
That's why I prefer to look at the whole taxpayer, not just one return or one source of income.
How Can Business Owners Make Taxes More Predictable?
The answer is planning.
During the year, your CPA can review current business results, project your share of taxable income, consider other household income, review what's already been paid through withholding and estimated taxes, and estimate what you may owe.
That doesn't necessarily mean you'll owe less.
It means you'll have a better idea of what's coming—and time to plan for it.
For business owners, that coordination is especially valuable because the business and the individual taxpayer are financially connected.
Julie Moran, CPA works with business owners in Massachusetts and across the country to coordinate business and individual tax planning and provide clear, proactive guidance throughout the year.
Want a clearer picture of how your business profits may affect your personal taxes? Schedule a conversation with Julie. https://calendly.com/julie-juliemorantax/30min
Frequently Asked Questions About Business Income and Personal Taxes
Why do I pay personal taxes on my business income?
If you own a pass-through entity such as an S corporation or partnership, your share of the business's taxable income generally passes through to your individual tax return.
Do I pay taxes only on the money I take out of my S corporation?
Generally, no. An S corporation shareholder can owe tax on their share of the company's taxable income even when some of that income remains in the business.
What is a Schedule K-1?
A Schedule K-1 reports an owner's or beneficiary's share of certain income, deductions and other tax items from a partnership, S corporation, trust or estate. The information is then used in preparing the individual's tax return.
Why do business owners make estimated tax payments?
Because income tax generally isn't automatically withheld from pass-through business profits, owners may need to make periodic estimated payments toward their expected federal and state tax liabilities.
How often should a business owner review personal estimated taxes?
It depends on the circumstances, but reviewing them periodically—and especially when business profits or other household income change significantly—can help prevent an unexpected balance due.
This article provides general educational information and is not intended as individualized tax, accounting, financial or legal advice. Tax laws and individual circumstances vary. Consult your tax advisor regarding your specific situation.
