Moving to or from South Carolina
Moving to South Carolina: A Tax Checklist for Your First Year
The tax side of a move to South Carolina comes down to a handful of steps: pin down the date you became domiciled here, get South Carolina tax withheld or paid from that date, apply for the reduced property tax ratio on your new home, and plan your first return as a part-year resident. From 2026 the state return also works differently from the federal one, starting from federal AGI with South Carolina's own deduction and two tax rates.
- Residency starts when South Carolina becomes your permanent home, not after a set number of days.
- Your first return is a part-year return with two possible methods.
- For 2026, South Carolina taxes income at 1.99% and 5.21% and replaces federal deductions with the SCIAD.
- Retirement income, Social Security and military retirement get separate South Carolina treatment.
- The 4% legal residence property ratio is not automatic; you apply for it.
- Only South Carolina's own 529 plan earns the state deduction.
Who this applies to
- Individuals and families relocating to South Carolina during 2026
- Retirees moving to the Charleston area from another state
- Remote workers who keep an employer in their old state
Who this may not apply to
- Seasonal visitors who keep a permanent home elsewhere; they may be nonresidents with South Carolina-source income only
- Businesses relocating; see our business tax guides for entity and payroll registration
Step 1: Fix your residency start date
Everything else keys off the date you became a South Carolina domiciliary. SCDOR's Domicile Guide says there is no minimum period and no day count; what matters is when South Carolina became the place you intend to stay permanently or indefinitely, shown by conduct such as moving your household, registering to vote, changing your driver's license and vehicle registration, and moving bank accounts and doctors. Write the date down and keep the paperwork that supports it, because your first return depends on it and so does the end of residency in your old state.
Step 2: Get South Carolina tax paid from that date
If your employer is in South Carolina, give it a South Carolina W-4 so state tax comes out of your paycheck. Remote workers need more care. Wages are generally sourced to where you do the work, so once you live and work here, those wages are South Carolina income even if the employer is out of state. If the employer will not withhold South Carolina tax, the 2026 SC1040ES says you must make estimated payments if you expect to owe $100 or more. Self-employed people and retirees without withholding should start estimates for the first quarter after the move.
Watch the old state too
Your former state may keep taxing you if you leave behind a home, a job or a business there, and some states treat remote work for an in-state employer as taxable to them. If both states tax the same wages, South Carolina gives residents a credit for the other state's tax, claimed on the SC1040TC with a copy of the other state's return.
Step 3: Understand how South Carolina taxes income from 2026
H.4216 rebuilt the state return for tax years starting in 2026. SCDOR Information Letter #26-20 explains that South Carolina taxable income now starts from federal adjusted gross income, not federal taxable income, so the federal standard deduction, itemized deductions and newer federal deductions such as those for tips, overtime and car loan interest no longer carry over. In their place is the South Carolina Income Adjusted Deduction, which phases out as federal AGI rises.
| Item | 2026 rule | Source |
|---|---|---|
| Tax rate on income under $30,000 | 1.99% | Section 12-6-510(C); IL #26-20 |
| Tax rate at $30,000 and above | 5.21% of taxable income minus $966 | Section 12-6-510(C); IL #26-20 |
| SCIAD, single or married filing separately | $15,000, gone at federal AGI of $95,000 | Section 12-6-1140(15) |
| SCIAD, head of household | $22,500, gone at federal AGI of $142,500 | Section 12-6-1140(15) |
| SCIAD, married filing jointly | $30,000, gone at federal AGI of $190,000 | Section 12-6-1140(15) |
| Starting point | Federal adjusted gross income | Section 12-6-50(21) |
Step 4: Check the breaks that matter to retirees
H.4216 left South Carolina's retirement-related deductions in place. The 2025 SC1040 instructions describe a retirement income deduction of up to $3,000 before age 65 and up to $10,000 from age 65, a separate age 65 deduction of up to $15,000 that is reduced by the retirement deduction claimed, and a full deduction for military retirement income. Social Security that is taxable federally is subtracted on the state return. These have their own rules on who qualifies and how they interact, which our separate guides walk through. Note that if you move in mid-year and file as a nonresident for the part-year return, the retirement and age 65 deductions are limited on Schedule NR.
Step 5: Apply for the 4% property tax ratio
Owner-occupied homes that qualify as your legal residence are assessed at 4% of value rather than 6%, which makes a large difference to the county tax bill. It does not happen automatically when you close on the house; you apply with the county assessor. The legal residence claim is also one of the factors SCDOR weighs when it decides your domicile, so it supports your income tax residency as well. If you are 65 or older, or disabled, look at the homestead exemption at the same time. Vehicles brought into the state also become subject to county property tax.
Step 6: Sort out college savings
South Carolina allows a deduction only for contributions to its own Section 529 programs, Future Scholar and the closed Tuition Prepayment Program. Contributions to your old state's plan earn nothing here. Section 59-2-80 does allow a deduction for a rollover from another state's 529 plan into Future Scholar, to the extent the amount was not previously deducted under South Carolina law, which can be worth reviewing in the year you arrive.
Step 7: Plan the first return
Your first South Carolina return will be a part-year return. You can report the whole year as a resident and claim a credit for the other state's tax, or report as a nonresident on Schedule NR, which taxes everything earned after the move plus South Carolina-source income from before it and prorates the SCIAD. The choice is yours only for the year you moved.
- Keep the closing statement and lease end date from your old home.
- Keep your final pay stub from the old state and the first from South Carolina.
- Track when large items arrived, such as bonuses, home-sale proceeds and retirement withdrawals.
- Save copies of every estimated payment made to either state.
Haigler CPA Group works with new arrivals in Charleston, Mount Pleasant and Summerville in person, and remotely elsewhere. Call (843) 214-0631 for a free consultation.
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Sources
- SCDOR — Domicile Guide (2021)
- SCDOR — Information Letter #26-20, Individual Income Tax Reform
- SC General Assembly — H.4216 (Act No. 110 of 2026), ratified text
- SCDOR — 2025 SC1040 Individual Income Tax Instructions
- SCDOR — 2026 SC1040ES Individual Declaration of Estimated Tax
- SC Code Title 59, Chapter 2 — Section 59-2-80, Future Scholar deduction
South Carolina publishes new guidance and local governments change their rates, so check the source pages for anything that has moved since the date above. The information on this site is general in nature and is not tax, legal, or accounting advice for your situation. Tax law changes and the right answer depends on facts we would need to review with you. Please speak with a qualified professional before acting on anything you read here.
Questions people ask about this
When does my South Carolina residency start for income tax?
On the date South Carolina became your permanent or indefinite home, shown by actions such as moving your household, changing your license and registrations and moving your accounts. There is no waiting period or minimum stay.
My employer is in another state and will not withhold South Carolina tax. What should I do?
Make South Carolina estimated payments from the quarter you begin working here. The 2026 SC1040ES requires estimates if you expect to owe $100 or more, and payments can be made online through MyDORWAY without an account.
Can I keep contributing to my old state's 529 plan after I move?
You can, but South Carolina gives no deduction for it. Only contributions to South Carolina's Future Scholar plan, or rollovers into it not previously deducted under South Carolina law, reduce South Carolina income.
Does my mortgage interest still reduce my South Carolina tax?
Not from 2026. South Carolina no longer follows federal itemized deductions, so mortgage interest, property taxes and charitable gifts do not reduce state income. The SCIAD replaces them.
Keep reading
- Who counts as an SC residentFor income tax, a South Carolina resident is anyone domiciled here: the place you treat as your permanent or indefinite home and intend to return to. There is no day-count test, so time spent in or out of the state does not settle the question on its own. Once you are domiciled here, you stay a resident until you abandon South Carolina and set up a new permanent home somewhere else.
- Filing a part-year SC returnIn the year you move into or out of South Carolina, Section 12-6-1710 gives you a choice. You can report all of your income for the year as if you were a resident and claim a credit for tax paid to the other state, or you can file as a nonresident using Schedule NR, which taxes everything you earned while a resident plus South Carolina-source income from the rest of the year. Which costs less depends on the other state's tax and on when your income arrived.
- The 4% legal residence ratioSouth Carolina taxes the home you own, occupy and are domiciled in on 4% of its fair market value instead of the 6% used for second homes and rentals, and that home is also exempt from school operating millage. The lower ratio is not automatic: you apply to the county assessor, with proof of domicile, before the first penalty date for the first tax year you claim, which is usually January 15 after the tax year.
- SC retirement and age 65 deductionsSouth Carolina lets the original owner of a qualified retirement plan deduct up to $3,000 of taxable retirement income a year, rising to $10,000 from the year they turn 65. Separately, residents 65 and older get a deduction of up to $15,000 each against any kind of income, reduced by the retirement deduction they claim. H.4216 did not amend Section 12-6-1170, which holds both deductions.
- SC income tax in 2026For tax year 2026, South Carolina taxes income under $30,000 at 1.99% and income of $30,000 or more at 5.21% minus $966. The state return now starts from federal adjusted gross income, ignores the federal standard and itemized deductions, and gives its own South Carolina Income Adjusted Deduction (SCIAD) instead. The state's own subtractions, such as the retirement, age 65, military retirement and 44% capital gains deductions, were not amended by the act.
- South Carolina tax guideHow South Carolina taxes income, businesses and property, and what the Charleston area adds on top, with the state or local source beside every rule.
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