Tax planning for an Ohio business owner connects several decisions: entity type, owner pay, retirement plan contributions, income and expense timing, Ohio and local taxes, and the owner's own retirement tax picture. Because each choice affects the others, year-end is a useful time to review them together. Results depend on individual facts and may involve trade-offs.
Reviewed November 2026. This article is educational information, not personal legal, tax or investment advice.
How do the pieces of an owner's tax picture connect?
For an employee, much of the tax picture arrives on a W-2. For an Ohio business owner, the business and the household share one picture, and that picture includes federal, Ohio and city tax rules. How the business is structured may affect how income is taxed. How the owner is paid may affect both the current tax bill and how much can go into a retirement plan. The timing of income and expenses decides which tax year each one lands in. And whatever is set aside today becomes the owner's retirement income later, which may be taxed when it comes out.
That is why a single move, such as a larger retirement plan contribution, is rarely just one decision. It can change taxable income this year, the cash available to the business, the cost of covering employees, and the tax picture the owner may face in retirement.
What are the common owner decisions, side by side?
| Decision | What it may affect | Main trade-off |
|---|---|---|
| Entity type | How business income is taxed, owner pay options, liability and paperwork | A change can carry legal and tax consequences, and a benefit in one area may add cost or complexity in another |
| Owner pay structure | Current taxable income, payroll taxes, and the pay used in some retirement plan formulas | Higher pay may allow larger plan contributions but may also raise payroll taxes, and lower pay may do the reverse |
| Retirement plan type | How much can be set aside, who must be covered, and when contributions can be made | Plans that cover employees add cost and administration, and plan terms limit what an owner can do |
| Timing of income and deductions | Which tax year income and expenses fall in | Moving income or expenses between years shifts tax rather than removing it, and it may raise a later year's bill |
| Ohio and local taxes | How business income is reported on the owner's Ohio return, whether the commercial activity tax applies, and city income or net profit tax filings | Rules vary by city and change over time, and a federal strategy may not have the same effect at the state or local level |
| The owner's personal retirement tax picture | Future withdrawals, required minimum distributions, Roth conversion room and Medicare premiums | A deduction today may mean taxable income later |
| Insurance and ownership documents | How the family and the business are protected if the owner is disabled or dies | Coverage has a cost, and agreements need updating as the business changes |
This table describes categories of decisions, not a recommendation for any business. The right mix depends on the business, the owner's age and goals, and the people who work there.
Which Ohio taxes may affect a business owner?
Federal rules are only part of the picture for an owner in Ohio. Three Ohio-level topics come up often. Each is described here at a general level, and an Ohio tax professional can confirm how they apply to a specific business.
- Ohio individual income tax. Owners of pass-through businesses often report business income on their personal Ohio return. The Ohio Department of Taxation (opens a separate site in a new tab) says taxable business income is taxed at a flat 3% rate, and it publishes a business income deduction that may apply to part of that income. Eligibility rules and amounts are set by law and can change, so they are worth confirming each year.
- Commercial activity tax (CAT). The CAT is an annual tax on the privilege of doing business in Ohio, based on Ohio taxable gross receipts rather than profit. As of November 10, 2026, the Ohio Department of Taxation (opens a separate site in a new tab) lists a $6 million annual exclusion for tax years 2025 and later and a rate of 0.26% on taxable gross receipts above it. Many smaller businesses fall under the exclusion, but the state says a business with an active CAT account must keep filing returns until the account is cancelled.
- City income and net profit taxes. Many Ohio municipalities levy their own income taxes, which may include a net profit tax on business income. Rates and filing rules differ by city, and an owner who lives in one city while the business operates in another may have more than one set of rules to follow.
These rules sit alongside the federal rules, not on top of them. A move that helps on the federal return may not change the Ohio or city result the same way.
What are the 2026 retirement plan limits for owners?
Retirement plan contributions are one of the most visible year-end topics. The IRS publishes limits each year, and they are ceilings, not targets. The IRS lists these figures for 2026:
- 401(k) employee deferrals: $24,500 (opens a separate site in a new tab). If the plan permits, participants age 50 and over may add a catch-up of $8,000, and participants age 60 through 63 may add $11,250 instead.
- Overall limit on contributions to one participant's account: $72,000 (opens a separate site in a new tab), not counting catch-up contributions. It covers deferrals, employer matching and employer nonelective contributions.
- SEP employer contributions: the lesser of 25% of the employee's compensation or $72,000 (opens a separate site in a new tab). Salary deferrals and catch-up contributions are not permitted in a SEP.
- SIMPLE plan employee deferrals: $17,000 (opens a separate site in a new tab), with a $4,000 catch-up for most participants age 50 and over.
- Compensation counted in plan formulas: up to $360,000 (opens a separate site in a new tab).
Several cautions apply. Plan terms may set a lower limit than the IRS maximum. Owners and highly compensated employees may face additional limits from nondiscrimination testing. The 25% calculation works differently for a self-employed owner's own contribution, which the IRS explains in Publication 560 (opens a separate site in a new tab). Timing rules also differ by plan type. For example, the IRS says a SEP can be set up for a year as late as the due date, including extensions, of the business's income tax return for that year (IRS SEP FAQ (opens a separate site in a new tab)). Other plans may have earlier deadlines, so the plan document and a tax professional should confirm what applies.
Which year-end questions are worth asking?
A year-end review does not need to be complicated. These questions may help an owner organize the conversation:
- Does the way the business is structured still match how it operates today?
- Are Ohio and city filings on schedule, including the commercial activity tax if the business has an account?
- How is income expected to compare with last year, and is there a reason to look at the timing of large invoices or purchases?
- Is the current retirement plan being used the way it was designed, and does it still fit the number of employees?
- What would the owner's own retirement tax picture look like if most savings sit in pre-tax accounts? Our post on the retirement tax planning window before RMDs covers that side.
- Do the owner's insurance, beneficiary designations and ownership documents agree with each other?
For a wider look at how year-end decisions on the personal side line up, see Three Year-End Money Moves, Three Different Clocks.
What are the risks and trade-offs?
Year-end owner planning has real limits, and each benefit carries a cost:
- Deductions may move tax, not remove it. A larger retirement contribution may lower taxable income now, but withdrawals may be taxed later, possibly at a different rate.
- Cash matters. A contribution or an equipment purchase that helps a tax return still uses cash the business may need.
- Covering employees adds cost. Some retirement plans require contributions for eligible employees, and plans carry administrative expense.
- Ohio and city rules may differ from federal rules. A federal deduction or timing choice may not have the same effect on an Ohio or city return, and city rules vary.
- Rules change. Tax law, contribution limits and thresholds are updated, and a strategy that fits one year may not fit the next.
- Choices made separately can conflict. A tax decision made without considering the entity, the owner's pay or the estate plan may create a problem in another area. A change in entity or ownership can also have legal consequences that a tax review alone would not catch.
- There is no assurance of a result. Planning may reduce uncertainty, but it cannot promise a particular tax outcome.
Why does coordination across law, tax and insurance matter?
Owner decisions rarely stay inside one discipline. Entity choices involve legal documents. Pay and timing involve tax. Coverage involves insurance. The owner's retirement income involves investments and the personal tax picture.
Advocate Wealth Solutions is an attorney-led family office in Dublin, Ohio, in the Columbus area. Gregory S. DuPont, JD, CFP, founded four sister firms that cover law, tax, insurance and investment: DuPont Law Group, Ohio Tax Advocates, Blue Ocean Insurance and Advocate Wealth Solutions. Ohio Tax Advocates is the tax discipline within that group. The idea is that the people looking at the entity, the tax picture, the coverage and the owner's retirement income can compare notes instead of working separately. Coordination takes ongoing attention, and an owner's own accountant, attorney or advisor may already be doing part of this work well.
Our tax planning service looks at how income, timing and retirement account decisions fit together, and The PILOT Process™ is the framework we use to check that a decision in one area is tested against the others.
How does planning look different in the years before a sale?
Everything above applies to an Ohio owner who plans to keep operating the business. When a sale is on the horizon, the questions shift. Structure, deal terms, the timing of proceeds and what comes after the closing may matter far more than a single year's deductions, and much of that work may need to start well before a buyer appears. Insurance, ownership documents and the owner's retirement income plan also tend to become more important.
That stage has its own page. If a sale is on your mind, see our page for business owners selling or sold. Ongoing and year-end planning, covered here, is often the earlier step, and the habits built in these years may make a later sale conversation better informed. Neither stage removes risk or promises a result.
Frequently asked questions
What is tax planning for Ohio business owners?
Tax planning for Ohio business owners is the process of reviewing entity type, owner pay, retirement plan contributions and the timing of income and expenses together, along with Ohio and city taxes and the owner's own retirement tax picture. It is educational and forward-looking, it may involve trade-offs, and it cannot promise any particular tax result.
Is year-end tax planning for small business owners worth doing?
It may be, because some decisions are tied to the calendar year while others have later deadlines. Reviewing the pieces before December 31 gives an owner time to ask questions. It is not worth forcing a move that creates cash strain or a larger tax bill later, so the review matters more than any single action.
What retirement plan limits apply to business owners in 2026?
As of November 10, 2026, the IRS lists a $24,500 limit on 401(k) employee deferrals, a $72,000 overall limit on contributions to one participant's account, and a $17,000 limit on SIMPLE plan deferrals. SEP contributions are limited to the lesser of 25% of compensation or $72,000. Plan terms and testing may lower what an owner can contribute.
How is planning different if I may sell my business someday?
A sale adds questions about structure, timing of proceeds, ownership documents and what the owner's retirement income will look like afterward. Those questions are covered on our page for business owners selling or sold. Starting earlier may leave more options open, but it does not promise a result.
Next step: a Clarity Map Session
If you want to see how your business decisions and your own retirement picture fit together, a Clarity Map Session is a place to start. It is a 30-minute, no-cost, no-obligation conversation to review your income sources, tax exposure and estate documents on one page. Year-end is close, and some decisions have deadlines, so starting sooner leaves more room to ask questions. You can request a session online or call 614-408-0004.
Sources and as-of dates
Federal figures were checked on irs.gov, and Ohio figures on tax.ohio.gov, as of November 10, 2026.
- IRS, 401(k) limit increases to $24,500 for 2026, IRA limit increases to $7,500 (opens a separate site in a new tab) (IR-2025-111, November 13, 2025)
- IRS, Retirement topics: 401(k) and profit-sharing plan contribution limits (opens a separate site in a new tab)
- IRS, SEP contribution limits (opens a separate site in a new tab)
- IRS, Retirement plans: FAQs regarding SEPs (opens a separate site in a new tab)
- IRS, Publication 560, Retirement Plans for Small Business (opens a separate site in a new tab)
- Ohio Department of Taxation, Annual tax rates (opens a separate site in a new tab)
- Ohio Department of Taxation, Commercial activity tax (opens a separate site in a new tab)
This article is for educational purposes only and is not personal legal, tax or investment advice. Tax law and contribution limits change, and every business and household is different, so talk with your own tax professional and attorney. Hypothetical descriptions are illustrative, and no strategy can guarantee a result or protect against loss.
Published November 10, 2026. Tax law, contribution limits and thresholds change, so read any figure here as of its stated date. None of it is advice about your own situation. Advocate Wealth Solutions is a fee-based planning firm in Dublin, Ohio, and a Clarity Map Session is where questions about your own accounts get answered.
