Moving to South Carolina

You are a South Carolina resident when South Carolina is your domicile: the place you intend as your permanent home, the center of your financial, social and family life, the place you mean to return to when you are away. The Department of Revenue says plainly that there is no minimum time in the state that makes someone a resident, so there is no 183-day rule to count toward or away from. A resident is taxed on all income, wherever earned, with a credit for income tax paid to another state on income taxed by both. A nonresident is taxed only on South Carolina-source income: wages for work done here, rent from property here, a business here. In the year you move in or out you are a part-year resident, and you may file either as a full-year resident, reporting everything and taking the credit, or as a nonresident on Schedule NR, reporting only the South Carolina-period and South Carolina-source income with the deductions prorated. South Carolina has no reciprocal agreement with any state.

The 2026 rewrite matters to a mover in one specific way. The new South Carolina Income Adjusted Deduction, $15,000 single, $22,500 head of household or $30,000 joint, is first reduced on federal AGI and then, for a part-year resident or nonresident, prorated by South Carolina AGI over federal AGI. The dependent exemption is prorated the same way. The rest of the return is described in How South Carolina income tax works.

Residency is domicile

The Department’s guide on domicile defines it as “the place where a person has his true, fixed, and permanent or indefinite home and principal establishment,” the place “to which, whenever he is absent therefrom, he has the intention of returning.” A person has one domicile at a time. Leaving South Carolina does not end it; a new domicile is acquired “by choosing a new domicile and actually residing there,” with an intent that is unqualified and not conditioned on some future event. Someone who moves away for a two-year assignment meaning to come back is still a South Carolina resident for those two years. Someone who sells the house, moves the family, registers to vote and gets a driver’s license in the new state has changed domicile on the day of the move.

Because intent is the test, the Department looks at facts that show it, in five groups: property (where the home is, and which one is claimed as a legal residence for the 4% assessment ratio), employment and finances, licenses and registrations (driver’s license, vehicles, voter registration), family (where the spouse and children live and go to school), and affiliations (church, clubs, doctors). No single fact decides it, and the list is not exhaustive. A person who claims to have left while keeping the South Carolina legal residence assessment, license and doctors has a hard case to make, and the audit, if it comes, is of the person leaving.

The year you move: two ways to file

The Department describes the choice directly. A part-year resident may file as a resident, including all federal income for the year and using the SC1040TC to claim a credit for income tax paid to another state on the income that state also taxed; or may file as a nonresident, attaching Schedule NR and reporting only the income earned while a South Carolina resident plus any South Carolina-source income from the rest of the year. The option applies only to the year of the move.

Which is better depends on what was earned in the other state and what that state charged on it. Filing as a full-year resident puts the whole year through the South Carolina brackets and gives a credit limited to the lesser of the other state’s tax on the shared income or South Carolina’s tax on it. Schedule NR leaves the other state’s income out entirely but prorates the SCIAD and the dependent exemptions. When the other state has no income tax there is no credit to take and Schedule NR wins outright; when it does, the credit can never exceed the South Carolina tax on that income, so the full-year route rarely does better. Run both.

How Schedule NR splits the year

Schedule NR has two columns: Column A is the federal figure, Column B is the South Carolina share. Wages go in Column B if earned while a resident, or if earned for work performed in South Carolina while a nonresident. Interest and dividends go in for the period of residence, plus any connected with a South Carolina business regardless of residence. Pensions, annuities and IRA distributions go in for the amounts received while a resident, and the retirement income deduction and the age 65 deduction are available to someone who was a resident for at least part of the year (verify). Rental income, royalties and pass-through income go in if the property or business is in South Carolina, whatever the owner’s residence. A capital gain goes in if the asset was sold while a resident, or if it is South Carolina real property (verify). The dates of residency go at the top of the schedule.

The South Carolina share of AGI divided by federal AGI, rounded to two decimals, is the proration percentage. From 2026 it is applied to the SCIAD after the income phase-out and to the dependent exemptions (verify); the 2026 Schedule NR had not been posted when this was written, so the line layout is to come. The tax is then figured on South Carolina taxable income using the full bracket schedule, 1.99% to $30,000 and 5.21% above.

A full-year resident married to a nonresident who files a joint federal return files a joint SC1040 with Schedule NR: the resident reports the whole year, the nonresident spouse reports only South Carolina-source income.

The credit for taxes paid to another state

A resident or part-year resident who paid income tax to both South Carolina and another state on the same income claims the credit on the SC1040TC, with one worksheet per state and a complete copy of each other-state return attached. The credit is the lesser of two figures: the South Carolina tax on the shared income (South Carolina tax times the share of South Carolina gross income that the other state taxed) and the other state’s tax liability on that income after its own credits. Tax liability means the tax computed on the other state’s return, not the amount withheld; a refund from the other state reduces the credit, and if the other state later refunds tax that produced a South Carolina credit, an amended SC1040 and repayment are due within 60 days. Income the other state taxed but South Carolina did not, such as rent from property there reported on a Schedule NR year, earns no credit. The credit is nonrefundable. Owners of a partnership or S corporation that elected to pay South Carolina’s entity-level tax are generally not entitled to it.

Commuters and the state line

South Carolina has no reciprocal agreement with any state, so a South Carolina resident who works across the line in North Carolina or Georgia files a nonresident return there on the wages, then reports the same wages on the SC1040 as a resident and takes the credit for the tax paid there. The employer withholds for the work state; the credit usually covers most of the South Carolina tax on those wages but not always all of it, and the rest of the household’s income, a spouse’s South Carolina wages, interest, a pension, is taxed here with no credit, so some South Carolina withholding or estimates may be needed. A South Carolina resident working remotely from home for an out-of-state employer owes South Carolina on all of it and, in the ordinary case, nothing to the employer’s state.

The reverse case is the nonresident who commutes into South Carolina. A nonresident is taxed on wages for work performed in South Carolina and files the SC1040 with Schedule NR, then takes the home state’s credit on the home state’s return. South Carolina does not have a convenience-of-the-employer rule: a nonresident who works from home in another state for a South Carolina employer is not taxed here on those days, and the Schedule NR wages should be the South Carolina-day share. If the home state does have such a rule and taxes a resident’s days at a South Carolina desk, whether South Carolina allows a credit for that tax is a question for a practitioner (verify). A nonresident paid $10,000 or more under a contract for services in South Carolina is subject to 2% withholding by the payer (verify).

Retirees who move in

Federal law bars a state from taxing the retirement income of someone who no longer lives there, so a pension earned elsewhere and paid to a new South Carolina resident is South Carolina’s to tax, under South Carolina’s rules: Social Security never, military retirement never, and up to $15,000 a person of other income sheltered at 65. In the move year, pension and IRA payments received after the move go in Column B. Two property tax items need attention. The 4% legal residence assessment ratio is applied for at the county assessor and should be in place for the first tax year you own and occupy the home. The homestead exemption on the first $50,000 of value, for owners 65 or older, disabled or blind, requires a full calendar year of South Carolina residence as of the December 31 before the tax year, so a retiree who arrives in mid-2026 applies at the county auditor for the 2028 tax year. The rest is in South Carolina for retirees.

Leaving South Carolina

The person leaving has the harder file. Change the driver’s license, the vehicle registrations and the voter registration; give up the 4% legal residence ratio on the South Carolina house, or sell it; move the accounts, the doctors and the memberships; and keep the closing statement or lease in the new state and a calendar. The last South Carolina return is a part-year Schedule NR for the move year. Income that stays South Carolina-source after the move, a rental or a business here, comes back on a nonresident Schedule NR every year. A South Carolina pension paid to a former resident is not taxed here at all. Every day of pension, wage and investment income before the move date is South Carolina income and every day after it is not, which is why the date needs documents.