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Per-state pillar

Base 7.25% + county/local add-ons · typically 7%–8% combined

Sales tax in Ohio

Ohio runs a 7.25% statewide base administered by the Ohio Department of Taxation (ODT), with county/local add-ons typically bringing combined rates to 7%–8% depending on ship-to. This pillar walks through the ODT's monthly remittance cadence on Form ST-1 due the 23rd of the month following the reporting period (with the ODT reclassifying low-liability accounts to quarterly / semi-annual), the dual-prong $100K / 200-transaction Wayfair-era economic-nexus threshold with the seven-year lookback the ODT enforces once nexus is established (heavier than single-year-lookback Pennsylvania / New Jersey / Illinois), the separate Commercial Activity Tax (Form CAT-11) obligation triggered at $500,000 in Ohio gross receipts, and the headline point-of-sale under-collection exposure for restaurants — the POS rate-stamp tilt the ODT pulls on multi-rate dine-in / take-out / beverage lines where the terminal stamps the wrong rate against the ODT-published ship-to combined rate.

Quick facts — at a glance

The seven ODT-administered facts an Ohio operator reads first — state base / county + transit overlay / monthly 23rd cadence / dual-prong nexus with seven-year lookback / Form CAT-11 Commercial Activity Tax at $500K / POS rate-stamp audit exposure for restaurants / seven-year lookback once nexus is established — each anchored to the corresponding ODT primary-source citation so the visible rates and cadences stay in lockstep with the ODT's published posture.

What you’ll find in this guide

Operational deep dive

Four Ohio-specific sub-blocks the operator wants next to the live schedule card above — the Commercial Activity Tax (Form CAT-11) carve-out at $500,000 in Ohio gross receipts, the seven-year lookback the ODT enforces once nexus is established, the point-of-sale rate-stamp audit exposure the ODT pulls on multi-rate dine-in / take-out / beverage lines for restaurants, and the narrower marketplace-facilitator + Ohio Business Gateway registration posture.

The Commercial Activity Tax (Form CAT-11) carve-out at $500K

Ohio carries a separate Commercial Activity Tax (CAT) filed on Form CAT-11, triggered at $500,000 in Ohio gross receipts — a gross-receipts only trigger with no transaction-count alternative, distinct from the $100K / 200-transaction dual-prong sales-tax economic-nexus test. The CAT lives alongside the Form ST-1 sales-tax obligation rather than inside it, so an Ohio operator at $500K+ in Ohio gross receipts carries two separate returns, two separate filing windows, and two separate penalty schedules — confusing the two is one of the most common audit pulls an Ohio operator faces.

  • Form CAT-11 obligation triggered at $500,000 in Ohio gross receipts (gross-receipts only — no transaction-count alternative on CAT, unlike the $100K / 200-transaction sales-tax dual-prong).
  • CAT cadence: quarterly between $150K and $1M in Ohio gross receipts, quarterly above $1M, and annually below $150K — administered through the ODT's Commercial Activity Tax — Form CAT-11 instructions rather than auto-promoted on a single quarter's liability.
  • The CAT lives alongside Form ST-1 — the sales-tax return — but they reflect different obligations and different underlyings: the sales-tax (ST-1) line is the consumer-facing tax the seller collected at the point of sale and remitted to the ODT; the CAT line is a gross-receipts tax on the seller's Ohio receipts (with a small exclusion tier under $150K) the seller self-remits to the ODT based on its own Ohio revenue, not the consumer's collected amount.
  • The most common operator mistake: confusing Form ST-1 (sales tax) with Form CAT-11 (Commercial Activity Tax). The two forms look similar but reflect different obligations; an operator who applies ST-1 funds to a CAT-11 underpayment — or files CAT-11 at the ST-1 cadence the ODT assigns — is exposed to both a CAT-side underpayment penalty and an ST-1-side late-filing penalty on the same dollar.
  • The CAT ledger runs on its own remittance calendar (quarterly or annually depending on the prior-12-month gross-receipts band) rather than on the monthly 23rd ST-1 cadence the ODT assigns for sales-tax. Stillpost keeps the two ledgers on their own per-period views so a quarterly CAT-11 filing does not stack on top of a monthly ST-1 in a single dashboard view.

The ODT's seven-year lookback once nexus is established

Ohio's economic-nexus posture is materially heavier than its sibling states: once the dual-prong $100K / 200-transaction threshold is met, the ODT enforces a seven-year retrospective-assessment posture that puts the seller on the hook for the prior seven years of uncollected Ohio sales-tax liability on unregistered sales, not just for forward-going returns. Pennsylvania, New Jersey, Illinois, North Carolina, and Georgia sit in the single-year-lookback or no-lookback peer set; Ohio is the seven-year outlier.

  • The ODT's seven-year lookback is administered alongside the dual-prong economic-nexus threshold through the Ohio Department of Taxation — Wayfair economic-nexus notice: once EITHER $100,000 in gross receipts OR 200-or-more separate transactions from Ohio-bound sales is satisfied in the prior twelve-month period, nexus is established and the seven-year retrospective assessment attaches.
  • Pennsylvania / New Jersey / Illinois / North Carolina / Georgia all sit in the no-lookback or single-year-lookback peer set — Pennsylvania's PA DOR looks at forward-going returns from the registration date forward with no retrospective assessment; New Jersey's NJ DTO likewise focuses on forward-going returns once the Certificate of Registration has been issued; Illinois / North Carolina / Georgia follow the same forward-going posture. Ohio is the seven-year outlier, which materially changes the cost of a late registration.
  • The operator-facing consequence: a registration even a few months late stacks seven full filing periods on top of the late-filing penalty and interest. A single high-volume year missed at registration can carry a seven-year tail on the under-collection, so the seven-year lookback posture is the operative default once nexus is established, not a soft guidance.
  • Registration through the Ohio Business Gateway once nexus has been established; the ODT issues a Certificate of Registration on Form ST-1 with the assigned filing cadence the registered seller follows from the registration date forward.
  • Operators should plan on registering through the Ohio Business Gateway as soon as the dual-prong threshold is met — i.e., before the next month-end — rather than waiting for a reassessment window; the seven-year lookback is the operative default once nexus is established, and the cost of a few months' delay is a seven-year-tail liability rather than a single-year-tail liability.

POS rate-stamp audit exposure — the restaurant-framed headline pitfall

Ohio's headline restaurant-persona audit pitfall is point-of-sale under-collection exposure: the ODT collects at the ship-to combined rate on every dine-in / take-out / beverage line, with no on-premises-vs-off-premises carve-out the way some sibling states provide. The POS terminal that stamps a default 7.25% on a prepared-beverage or to-go line under-collects by the local differential — an ODT audit pulls the POS rate-stamp log against the ODT-published ship-to combined rate and the gap is the audit pull. The pattern is unique to restaurants (and any high-line-count QSR-style operator with a multi-rate POS) because the line-by-line rate stamping is what creates the audit exposure in the first place.

  • The headline failure mode for Ohio restaurants: the POS terminal stamps a default 7.25% (the statewide base) on every line — dine-in, take-out, beverage — rather than the ship-to combined rate the ODT publishes per ZIP code. When county/local add-ons bring the ship-to combined rate above 7.25%, the POS under-collects by the local differential on every line the terminal stamps at 7.25%.
  • An ODT audit pulls the POS rate-stamp log against the ODT-published ship-to combined rate — the gap between what the terminal stamped at 7.25% and what the ODT expected at the typical ship-to combined 7%–8% is the under-collection audit pull, applied across the full reporting period rather than as a one-line glitch.
  • Ohio collects at the ship-to combined rate on every dine-in / take-out / beverage line with no on-premises-vs-off-premises carve-out the way some sibling states provide — a take-out beverage line is taxed at the same combined rate as a dine-in line, an alcoholic-beverage-to-go line at the same combined rate as an on-premises dining line. Operators should NOT rely on a POS that bundles the carve-out as a category-level toggle (a category-level on-premises-vs-off-premises flag that reflows the rate stamp); instead, the POS should apply the ship-to combined rate on every line by default.
  • The POS rate-stamp tilt is restaurant-persona-specific because the line-by-line stamping is what creates the audit exposure in the first place — retail / agency / service-shop operators bill by invoice rather than by POS line, and the line-by-line pattern is the unique QSR / higher-end POS operator axis. Cross-reference the four-vertical persona framing: restaurants on the POS rate-stamp axis the brief specifies; retail / agencies / service shops on their standard persona exposure (retail: resale + exempt-category certificates; agencies: PPFS production-step; service shops: installation-labor-vs-parts split) under the same ODT framework.
  • The POS rate-stamp exposure is administered through the Ohio Department of Taxation — Sales and Use Tax overview; the ship-to combined rate per ZIP code is the rate the ODT expects on every line, and the POS terminal should apply that rate rather than the 7.25% statewide base as the default stamp.

Marketplace-facilitator posture and the Ohio Business Gateway registration path

Ohio runs a narrower marketplace-facilitator carve-out than some sibling states: facilitator collection does not relieve the direct-channel owner of the direct-channel filing obligation. A remote seller whose entire Ohio business runs through a marketplace facilitator is generally NOT required to register separately for those marketplace-channel transactions, but the direct-channel owner who runs an own-site or a direct invoicing channel alongside the marketplace channel must register through the Ohio Business Gateway and apply the ODT-published ship-to combined rate on every direct-channel sale.

  • The narrower marketplace-facilitator posture: an in-state marketplace facilitator that facilitates a sale into Ohio for a remote seller is required to collect and remit the ODT-published ship-to combined rate on the marketplace-channel sale — but the carve-out only relieves the marketplace-channel collection obligation. The direct-channel owner (an own-site checkout, a direct invoicing channel, a manual invoice, EDI-style direct billing) must register through the Ohio Business Gateway and apply the ODT-published ship-to combined rate on every direct-channel sale.
  • No SSUTA-style streamlined registration: Ohio does not participate in the Streamlined Sales and Use Tax Agreement's central-registration framework, so multi-state registrants include Ohio as a state-by-state registration rather than rolling it up into a single SSUTA central registration. New registrants register through the Ohio Business Gateway rather than a multistate compact; the ODT issues a Certificate of Registration with the assigned filing cadence the seller follows on every ST-1 return.
  • Cross-channel reconciliation follows the same per-channel pattern other Wayfair-era dual-prong states use: marketplace-facilitator-collected revenue is removed from the operator's direct-channel ST-1 liability calculation (the in-state facilitator carries it), but the operator still applies the ODT-published ship-to combined rate to all direct-channel revenue. The dual-prong $100K / 200-transaction threshold counts the combined channel revenue (marketplace-channel + direct-channel), not the direct-channel-only revenue, for the seller's nexus trigger.
  • The marketplace-facilitator posture co-exists with the seven-year lookback: an operator whose combined revenue crosses either prong must register through the Ohio Business Gateway even if the marketplace-channel revenue is the only revenue crossing it — and the seven-year lookback attaches at registration time, not at the marketplace-only-channel revenue threshold.

Pegged to the ODT's monthly-on-the-23rd Form ST-1 remittance calendar

Pegged to the ODT's monthly-on-the-23rd Form ST-1 remittance calendar

Stillpost estimates your Ohio ST-1 liability off your daily sales and lines it up with the ODT's monthly 23rd-of-the-month remittance calendar — so the estimate lands on the day the ODT expects the return, not 5 days early or 5 days late. The ODT may reclassify an account down to quarterly (and, below the next ODT threshold, to semi-annual) once the prior-12-month sales-tax liability drops below the ODT carve-out points; Stillpost keeps the same per-period view either way, so the dashboard reads the same for a monthly-on-the-23rd account and a quarterly-downshifting account. The always-file-a-no-activity-month ST-1 rule the ODT enforces on every registered seller once the Certificate of Registration has been issued is reflected in the same per-period view, so a zero-liability month still files the standard ODT ST-1 on the 23rd.

On top of the cadence-pegged estimate, you also get the ODT's dual-prong $100K / 200-transaction Wayfair-aligned economic-nexus tracker (either prong satisfied — a high-ticket-low-volume seller can trip the dollar prong without the transaction-count prong), with ODT registration through the Ohio Business Gateway before the close of the month after crossing nexus. The seven-year lookbackthe ODT enforces once nexus is established is materially heavier than Pennsylvania's / New Jersey's / Illinois's no-lookback or single-year-lookback posture — a registration even a few months late stacks seven full filing periods on top of the late-filing penalty and interest. The separate Commercial Activity Tax (Form CAT-11) obligation triggered at $500,000 in Ohio gross receipts sits alongside the Form ST-1 on its own cadence (quarterly $150K–$1M, annually below $150K). And the headline POS rate-stamp audit exposure the ODT pulls on multi-rate dine-in / take-out / beverage lines for restaurants — there is no on-premises-vs-off-premises carve-out, so the POS must apply the ODT-published ship-to combined rate on every line, not the 7.25% statewide base as the default stamp.

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Other pillars and verticals

Jump from Ohio into a sibling state pillar or into the vertical surface that fits the inside of your business — every link below renders against the same control plane the Ohio pillar ships, so the rate-overlaid / cadence / nexus / CAT / POS-rate-stamp framing reads the same across the cluster.

Sister state pillars

TexasFloridaNew YorkCaliforniaNew JerseyIllinoisPennsylvaniaGeorgiaNorth CarolinaWashington

Verticals

For restaurantsFor agenciesFor retailFor service shops