South Carolina — 183-Day Residency Presumption

Summary

Real test

Domicile (where your permanent home is)

Day marker

More than 183 days / calendar year

Type

Rebuttable presumption, one-directional

Resident effect

Worldwide income taxed

Authority

SC Department of Revenue (SCDOR)

Basis

SC Code § 12-6-30; S.C. Code Regs. 117-620

South Carolina residency is decided by domicile — where your true, permanent home is — not by a day count. The statute, SC Code § 12-6-30, defines a resident simply as an individual domiciled in this State, with no number of days attached. The 183-day figure comes from the regulation, S.C. Code Regs. 117-620: if you are present in the state for more than 183 days in a taxable year, you are presumed to be a resident — but that presumption is rebuttable, and it only runs one way. Staying under 183 days does not make you a non-resident. If South Carolina is your domicile, you remain a resident taxed on worldwide income no matter how few days you spend there.

Who it applies to

This matters most if you are:

• A remote worker or frequent traveler who spends long stretches of the year in South Carolina.
• Someone who has moved out of South Carolina but still keeps a home, family, or business ties in the state.
• A part-year or seasonal resident — for example, a snowbird who winters elsewhere but keeps a Lowcountry home.
• Anyone whose day count is creeping toward the 183-day mark and who wants to avoid triggering the residency presumption.

It applies to individuals regardless of citizenship or immigration status — South Carolina residency is about domicile and presence, not nationality or visa.

The rule — and why it exists

Two layers work together here, and it is important to keep them apart.

• The statute is domicile-only. Under SC Code § 12-6-30, a resident individual is an individual domiciled in this State. Domicile is your one true, fixed, permanent home — the place you intend to return to. It contains no day count at all.
• The regulation adds a presumption. S.C. Code Regs. 117-620 (Legal Residency) states that, in the absence of convincing proof to the contrary, an individual who is present within the State for more than 183 days during the taxable year is presumed to be a resident, but the absence of an individual from the State for more than 183 days raises no presumption that the individual is not a resident.

Read the second sentence of that quote carefully — it is the whole point. The presumption is one-directional:

• Over 183 days present → presumed a resident. You can rebut this with convincing proof that your domicile is genuinely elsewhere, but the burden is on you.
• Under 183 days present → nothing is presumed. A low day count does not make you a non-resident. If South Carolina remains your domicile, you are still a resident.

Why it exists: a pure day-count rule would be easy to game — someone could keep their home, family, and life in South Carolina while carefully clocking days to claim non-residency. Anchoring residency to domicile closes that gap, and the 183-day presumption gives the Department of Revenue a simple audit marker for people who are clearly spending most of the year in the state.

Counting the days

The day marker is measured over the calendar year. South Carolina individuals use the same tax year as their federal return (1 January to 31 December), so the count is a fresh annual tally, not a rolling window.

1. 1Count the days you are physically present in South Carolina during the calendar year (1 January to 31 December).
2. 2The tally resets to zero each 1 January — a new annual count, not a rolling window.
3. 3Cross 183 (i.e. reach 184 or more days present) and you fall into the residency presumption for that year.
4. 4Staying at or under 183 days keeps you out of the presumption — but it does not, by itself, prove you are a non-resident if South Carolina is still your domicile.

A note on partial days: the regulation does not spell out arrival, departure, or a midnight rule. In practice the Department of Revenue and tax preparers treat any physical presence during a day as counting that day, so a fly-in / fly-out day usually counts on both ends. Because that is practice rather than codified text, treat partial days conservatively.

Examples

Example 1 — over the marker, presumed resident

Dana keeps an apartment in Charleston and works remotely. In 2026 she is physically present in South Carolina for 205 days. Because that is more than 183 days, the Department of Revenue presumes she is a resident for 2026, and South Carolina can tax her worldwide income. To rebut it, Dana would have to show convincing proof that her actual domicile is somewhere else — a heavy lift given that her home is in Charleston.

Example 2 — under 183 days, still a resident

Marcus is domiciled in Greenville — it is his permanent home, where his wife and kids live and his voter and vehicle registrations sit. In 2026 he takes a long overseas contract and spends only about 90 days in South Carolina. He is well under 183, so no presumption is triggered against him — but that cuts both ways. Because he never abandoned his Greenville domicile or established a new one abroad, South Carolina still treats him as a resident. The low day count did not save him.

Example 3 — a genuine move out

Priya sells her Columbia home, signs a lease in Georgia, moves her family, changes her driver's license and voter registration, and now visits South Carolina for about 40 days a year to see relatives. She has both established a definite new domicile in Georgia and abandoned her South Carolina domicile, and her day count is far under 183. That combination — not the day count alone — is what makes her a clean South Carolina non-resident.

Exceptions & edge cases

• Domicile is sticky. Once you are domiciled in South Carolina, you remain a resident until you do both things: establish a definite new domicile elsewhere and abandon your South Carolina domicile (Reg 117-620). A day counter cannot capture this — pair it with a genuine domicile-abandonment checklist (new home, license, registrations, family, business).
• Rebutting the presumption. Being present over 183 days does not automatically make you a resident if you can prove your domicile is truly elsewhere. But the burden of that convincing proof is on you, and simply spending the winter out of state is rarely enough.
• Foreign domicile. A separate regulation, S.C. Code Regs. 117-620.1, governs legal residence when an individual is domiciled in a foreign country. If your case involves a genuine foreign domicile, that carve-out — not just the 183-day presumption — is where the analysis lives.
• Source income still taxed. Even as a clean non-resident, income sourced to South Carolina — such as wages for work physically performed in the state — remains taxable there.
• Part-year residents. If you move into or out of South Carolina mid-year, you are generally taxed as a resident for the part of the year you lived there and as a non-resident for the rest.

Because domicile turns on intent and a web of facts, a borderline move — especially one that keeps a home, family, or business behind in South Carolina — is exactly the kind of case where a tax professional's read genuinely earns its keep.

Common misconceptions

• "Under 183 days and I'm not a resident." False — the presumption only runs one way. A low day count triggers no presumption against you, but if South Carolina is still your domicile you remain a resident.
• "183 days is a hard legal cutoff." No — it is a rebuttable presumption in the regulation, an audit trigger, not the kind of dispositive bright line some other states use. Domicile is the real test.
• "Cutting my days is enough to leave." Not by itself — you have to establish a new domicile elsewhere and abandon your South Carolina one. Reducing visits without moving your life does not end residency.
• "The 183-day rule is in the tax statute." No — the statute (§ 12-6-30) is domicile-only. The 183-day presumption lives in Regulation 117-620.
• "Only my South Carolina income is taxed." Only if you are a non-resident. A resident is taxed on worldwide income.

Frequently asked questions

Sources

• South Carolina Department of Revenue — Domicile Guide
• SC Statehouse — SC Code § 12-6-30 (resident individual)
• S.C. Code Regs. 117-620 — Legal Residency
• S.C. Code Regs. 117-620.1 — Legal Residence When Domiciled in a Foreign Country