Ohio's 212 Contact-Period Residency Rule

Ohio does not count days the way most states do. It counts contact periods, which are essentially overnights. More than 212 of them in a calendar year makes you a presumed Ohio resident.

Last verified: August 2026

In short: Ohio measures your presence in contact periods, not calendar days. A contact period is basically an overnight: you are away overnight from a home outside Ohio and present for part of two consecutive days in the state. Have more than 212 contact periods (213 or more) in a calendar year and you are presumed to be an Ohio resident. To be presumed a nonresident you need 212 or fewer contact periods, an abode outside Ohio for the whole year, and a filed Ohio Nonresident Statement (form IT 10).

Threshold: More than 212 contact periods
What it counts: Overnights, not days
Counting window: Calendar year
A contact period is: Overnight + part of 2 consecutive days in Ohio
Effect at 213+: Presumed Ohio resident
Also required for nonresidency: Abode outside Ohio + nonresident statement
Legal basis: Ohio Rev. Code §5747.24

The rule

Most states with a day-count residency test treat any part of a day in the state as a full day. Ohio works differently. Under Ohio Rev. Code §5747.24, your presence is measured in contact periods, and the test is built as a presumption rather than a hard resident line:

212 or fewer contact periods. If you also keep at least one abode outside Ohio for the entire year and file the required affidavit, you are presumed not to be domiciled in Ohio.
More than 212 contact periods. Reaching 213 or more contact periods (or lacking an out-of-state abode) means you are presumed to be domiciled in Ohio for the whole year, and taxed as a resident.

Because it is a presumption, the outcome can be argued the other way with evidence, but crossing the 212 line moves the burden onto you. The threshold is what the app tracks: stay at or below 212 contact periods and the day-count side of the test is satisfied.

How to count it

A contact period is not a calendar day. You have one contact period when you are away overnight from your home outside Ohio and spend at least some part, however minimal, of each of two consecutive days in Ohio. You do not have to sleep in Ohio: parts of Monday and Tuesday spent in Ohio with the night in a Kentucky hotel still make one contact period, because you were away overnight from your abode. What does not count is a visit where you go back to your own home for the night.

Identify each overnight where you were away from your abode outside Ohio.
For each such overnight, check whether you were present in Ohio for part of both the day before and the day after that night.
If so, count it as one contact period. Contact periods do not need to be consecutive.
Add them across the whole calendar year. At 213 or more you are presumed to be an Ohio resident for that year.

Example. You live in Kentucky but travel into Ohio often for work. On many trips you drive in for the day and go home the same evening. Those daytime visits do not create contact periods, because you were not away overnight.

On other trips you stay overnight in a Columbus hotel, present in Ohio on both the arrival and departure days. Each of those is one contact period. A night spent in a hotel on the Kentucky side between two Ohio work days counts too: the night does not have to be in Ohio, only away from your home. If those overnights add up to 213 or more across the year, Ohio presumes you were domiciled in the state, even though your day trips from home never counted.

Beyond the day count

Contact periods are only the mechanical part. The underlying question in Ohio is domicile, meaning where your true, fixed home is. The contact-period presumption is a shortcut for that broader test, and the Ohio Supreme Court has held that meeting the bright-line count does not by itself settle domicile if the wider facts point the other way. Two practical points follow: keeping an abode outside Ohio for the entire year is part of the nonresident presumption, and you must file the Ohio Nonresident Statement (form IT 10, or the checkbox on the IT 1040) by its deadline, 15 October of the following year. Miss the statement and Ohio can presume you were domiciled in the state for the whole year regardless of your contact-period count.

AtlasDays helps track Ohio's contact-period rule

Log your trips once. AtlasDays privately counts nights inside your logged Ohio trips for each calendar year on your iPhone and warns you before you cross the 212 line. It cannot automatically add a legal contact period created by presence in Ohio on two adjacent days when the overnight itself is outside Ohio, so verify those nights separately.

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FAQ

How many contact periods can you have in Ohio without being a presumed resident?

Up to 212 in the calendar year. At 213 or more contact periods you are presumed to be an Ohio resident. Staying a presumed nonresident also requires an abode outside Ohio for the whole year and a filed Ohio Nonresident Statement (form IT 10).

What is a contact period, and how is it different from a day?

A contact period is essentially an overnight away from home: you are away overnight from your home outside Ohio and present for part of each of two consecutive days in the state. The night itself does not have to be spent in Ohio. A day trip where you sleep at your own home does not create a contact period, which is unlike an any-part-of-a-day count.

Do you have to file anything to be treated as an Ohio nonresident?

Yes. Even with 212 or fewer contact periods and a home outside Ohio, the nonresident presumption depends on filing the Ohio Nonresident Statement (form IT 10, or the checkbox on the IT 1040) on time. Miss it and Ohio can presume you were domiciled in the state for the entire year.

About this article: AtlasDays provides general information, not legal, tax, or immigration advice. Rules change and outcomes depend on your circumstances, so never rely on it alone: check the linked official source or ask a qualified professional.