When must an Ohio pass-through entity withhold for its investors, and who can be left out?

The regime and its recent renovation

Ohio taxes nonresident investors' shares of pass-through income through a withholding-style entity tax reported on the IT 1140, filed by qualifying pass-through entities with qualifying investors. The mechanics start with the entity's Ohio-apportioned income and then allocate it investor by investor, but only investors within the regime's reach enter the computation, which is why the exclusion analysis comes before the arithmetic.

The regime was renovated recently enough that pre-2023 intuitions mislead. For years, the tax ran at 5 percent on amounts allocable to individual investors and 8.5 percent on amounts allocable to entity investors, and structuring around the 8.5 percent tier was its own small practice area. For reporting periods beginning on or after January 1, 2023, a single 3 percent rate applies, aligned with Ohio's business income tax rate, and the tier distinction is gone. Returns and workpapers that carry the old rates forward are computing a tax that no longer exists.

The subtraction list

The investors excluded from the adjusted qualifying amounts map to the regime's purpose, which is collecting Ohio tax from investors the state might otherwise never see. Residency drives the first exclusion. R.C. section 5733.40(I)(2) excludes individuals and estates that are resident taxpayers for the entire qualifying taxable year, and under the Ohio Department of Taxation's published guidance in the IT 1140 instructions, full-year Ohio resident trusts are likewise not qualifying investors, so no withholding applies to them. The Department's instructions and published answers also state that no IT 1140 is required where the equity investors are limited to full-year Ohio resident individuals, estates, trusts, C corporations, and other non-qualifying investors. A nonresident trust is a qualifying investor subject to withholding unless it provides the written nexus statement described in R.C. section 5733.40(I)(7). C corporations are excluded, because they file their own Ohio returns under their own regime. Investors described in IRC 501(c), pension plans, charities, and their kin, are excluded, along with publicly traded partnerships, REITs, RICs, REMICs, and a short list of specialized investors. The 1,000 dollar threshold then excuses the trivial case entirely.

The exclusion that matters most in tiered structures is the investor that is itself a pass-through entity with its own Ohio compliance. Where the lower-tier entity's investor is an upper-tier partnership or LLC that will itself file for its own investors, the withholding obligation should sit once, not at every tier, and Ohio's framework accommodates that through R.C. section 5733.402, under which the lower tier is relieved where the investing entity irrevocably acknowledges Ohio nexus and makes a good-faith effort to comply, and through the conditioned exclusions in R.C. section 5733.40(I)(4) and (I)(5). The statute names the instruments that support these exclusions: the investing entity's irrevocable nexus acknowledgment under R.C. section 5733.402, and a non-individual investor's written statement under R.C. section 5733.40(I)(7)(a), made under penalty of perjury and retained by the pass-through entity for no fewer than seven years. Keeping them on file matters because the entity signing the return answers for an investor omitted without support.

The three-return choice, made once

The IT 1140 no longer stands alone, and the modern Ohio decision is which of three returns to file. The IT 1140 withholds for qualifying investors and leaves residents and excluded investors out. The IT 4708 composite return is filed in place of the IT 1140 for the investors it covers, at the composite rate the Department sets for the year (3.125 percent for 2025), and an entity that files a composite covering all of its nonresident investors owes no IT 1140. And for taxable years beginning in 2022 and later, the IT 4738 electing pass-through entity return implements Ohio's federal deduction workaround: the entity elects, year by year, to pay Ohio tax at the entity level on all investors' shares (R.C. section 5747.38), the investors take a refundable credit (R.C. section 5747.39), and the entity's owners capture the federal SALT deduction benefit that a mere withholding regime does not deliver.

The choice binds harder than people expect. Ohio's instructions are explicit that once an IT 1140 is filed for a period, the entity may not amend it into an IT 4708 or an IT 4738 for that period. The return filed first is the regime for the year, so the comparison, withholding only, composite, or election, belongs in the planning file before the first filing, not in the amended-return file after it. For many entities the IT 4738 analysis now dominates, since the federal deduction for tax paid on all investors' shares can exceed the IT 1140 tax on nonresident investors alone, though the higher federal SALT cap enacted in 2025 makes that comparison owner-specific. The election also has its own eligibility and credit mechanics, and an entity whose investor base is mostly excluded investors may still find the plain IT 1140, or nothing at all, is the right answer.

Practice notes

The Ohio file starts with a census, not a computation. First, classify every investor for the period: resident for the full year or not, and for a nonresident trust or other non-individual investor, whether an R.C. section 5733.40(I)(7) statement is on file; corporate or not; exempt or not; pass-through or not. The adjusted qualifying amount is defined by who remains after the exclusions, and most errors here are population errors rather than math errors. Second, paper the exclusions: for every investor left out of the computation, the file should hold the basis, residency, entity classification, exempt status, or the investor's own Ohio filing commitment, in whatever form current practice uses, since the entity bears the consequence of an unsupported omission. Third, run the three-return comparison annually and before anything is filed, with the irrevocability rule in view: the IT 4738 election's federal benefit, the composite's simplicity, and the IT 1140's narrowness are different answers for different investor bases, and the first filing forecloses the others for the year. Fourth, purge the old rates from the templates: a workpaper still computing 5 and 8.5 percent tiers is wrong on its face for current periods, and its persistence in rolled-forward workpapers is a common Ohio error. G&G State Tax Group provides Ohio pass-through entity withholding and return-choice analysis alongside its state and local tax practice.