South Carolina is one of the more tax-friendly states in the country for retirees and high earners moving from the Northeast. It does not tax Social Security income, it extends a meaningful deduction on other retirement income, it imposes no estate or inheritance tax, and it assesses an owner-occupied primary residence at a 4% ratio rather than the 6% applied to second homes. This guide walks through each advantage with current figures, and compares them candidly with what buyers leave behind in New York, New Jersey, Connecticut, Massachusetts, and Virginia. It is informational only and is not tax or legal advice; confirm every figure with your accountant.
Social Security income is not taxed
For most retiring households, this is the headline. South Carolina exempts Social Security benefits from state individual income tax entirely. According to the South Carolina Department of Revenue, Social Security and railroad retirement benefits taxed at the federal level are deducted in full on the South Carolina return, regardless of age or income level.
That is a structural advantage over several Northeastern states’ broader treatment of retirement income, and for a household drawing significant Social Security, it removes a recurring line item from the state tax bill every year. Worth noting for one origin state: Connecticut also exempts Social Security, but only below income limits of $75,000 single and $100,000 joint. South Carolina’s exemption has no income cap and no cliff.
The retirement-income deduction
Beyond Social Security, South Carolina layers in age-based deductions that further reduce the tax on pensions, 401(k) and IRA distributions, and similar income.
Per the Department of Revenue, a resident who is age 65 or older may claim a deduction of up to $15,000 against income of any kind. Separately, taxpayers receiving qualified retirement income may deduct up to $10,000 of that income once they reach 65 (and up to $3,000 before 65). These provisions coordinate rather than simply stack, so the combined benefit depends on the type and amount of income, and married couples may each claim their own deduction on qualifying income. The practical effect is that a retired couple can shelter a substantial slice of pension and retirement-account income from state tax. Model your specific figures with your accountant, because the interaction of the deductions is where the real number lives.
A low, two-tier income tax
South Carolina does have a state income tax, which distinguishes it from Florida. The relevant point for relocating buyers is how low the effective rate has become.
Under the income tax reform (H.4216) signed into law on March 30, 2026, South Carolina moved to a two-rate structure for the 2026 tax year: income below $30,000 is taxed at 1.99%, and income at or above $30,000 is taxed at 5.21% (with an offset that smooths the brackets). That top rate is down from the 6%-plus top bracket of recent years, and the law builds in further reductions when state revenue growth hits defined triggers. For a high earner coming from New Jersey’s top effective rate of 10.75%, New York’s 9.65% on income over $1 million (before New York City’s additional local tax), or Massachusetts’ 9% above roughly $1.1 million once its surtax applies, the difference compounds quickly year over year. There are no local income taxes anywhere in South Carolina. Confirm current rates on the Department of Revenue’s individual income tax page, since the trigger mechanism can move the top rate.
No estate tax, no inheritance tax
South Carolina repealed its estate tax for deaths occurring after January 1, 2005, and it levies no inheritance tax. Heirs receive South Carolina property and accounts without a state-level transfer tax, at any estate size.
This is a sharper contrast with the Northeast than many buyers realize:
– New York taxes estates above an exemption of roughly $7.35 million for 2026, and applies an “estate tax cliff” that can tax the entire estate, not just the amount over the exemption, once an estate exceeds the threshold by more than 5%.
– Massachusetts taxes estates above just $2 million, at rates up to 16%, and the threshold is not indexed for inflation. Around Boston, decades of home appreciation alone can push an ordinary household over it.
– New Jersey repealed its estate tax in 2018 but retains an inheritance tax of up to 16% on property passing to non-lineal heirs such as nieces, nephews, and friends.
– Connecticut has aligned its estate exemption with the federal level (about $15 million for 2026) and caps its estate tax at a flat 12% above that amount, but it remains the only state in the country that also levies a gift tax.
– Virginia , to its credit, has no estate or inheritance tax either, matching South Carolina on this line.
The federal estate tax still applies above its own exemption (about $15 million per individual for 2026), so estate planning does not disappear in South Carolina. It simply loses the state-level layer. This is exactly the kind of issue to run past an estate attorney, not a real estate guide.
Property tax: the biggest line, and the biggest gap
South Carolina’s property tax is where the relocation math gets loud, and it deserves more attention than it usually gets in a listing conversation. Three features matter.
First, the assessment ratio. An owner-occupied primary residence is assessed at 4% of market value, while second homes, rental, and non-resident-owned property are assessed at 6%. That gap looks small but represents a 50% increase in taxable value, which is why establishing a property as your legal residence matters and why buyers must apply for the 4% rate with the county assessor rather than receiving it automatically.
Second, the school exemption. Under South Carolina’s Act 388, a primary residence is exempt from school operating millage, the single largest component of most property tax bills. This is the quiet mechanism that produces Horry County’s roughly 0.33% effective rate on primary residences, the lowest in the state. In practice, a $400,000 primary home in Horry County runs on the order of $1,300 to $1,700 a year depending on the municipality; run any specific address through the county’s own tax estimator before you rely on a number. At 65, the state’s Homestead Exemption removes the first $50,000 of value on top of everything above.
Third, the comparison with home. Effective rates on owner-occupied housing per the Tax Foundation: New Jersey ~2.11% (median bill near $9,590), Connecticut ~1.54% with typical bills near $6,575 and Fairfield County above $9,000, New York ~1.55%, Pennsylvania ~1.30% with Lehigh Valley bills of $4,500 to $7,000, Massachusetts ~1.00% but ~$6,900 bills on its home values, and Virginia ~0.78% with Fairfax County above $7,000. On a comparably valued primary home, the annual swing to Horry County commonly runs $3,000 to $8,000 a year, every year.
The honest caveat cuts the other way for second-home buyers: at the 6% ratio with no school exemption, a Grand Strand second home’s bill runs roughly 2.5 to 3 times the primary-residence figure on the same house. Price the purchase at the 6% ratio rather than the 4% a primary-resident seller may quote you, and note that an
amenity-rich community such as Grande Dunes will carry its own millage and HOA layer on top.
Putting it together
A simple way to see the compounding effect is to walk a representative retired couple through it. Picture a household drawing Social Security plus pension and retirement-account income, owning a primary home and carrying a sizable estate. In South Carolina, the Social Security is untaxed, a portion of the other retirement income is deducted, what remains is taxed at a low effective rate, the home is assessed at the 4% ratio against one of the lowest effective property-tax rates in the country, and the estate passes with no state-level tax. Run the same household in New Jersey, New York, or Massachusetts and each of those lines moves the wrong way at once: higher income tax, a property bill several times larger, and an estate exposed to a state tax with, in New York’s case, a cliff and, in Massachusetts’ case, a $2 million threshold that ordinary Boston-area home equity can cross. The annual difference is rarely a single dramatic number; it is the sum of several, which is why the move pencils out for so many.
For a household relocating from a high-tax Northeastern state, the South Carolina advantage is not one line item, it is the stack: no tax on Social Security, a deduction on other retirement income, a top income rate now well below the Northeast, no estate or inheritance tax, and property taxes a fraction of what New Jersey or Connecticut charges. The state-by-state detail lives in the
relocating-by-state guide, Pennsylvania buyers have a
dedicated Lehigh Valley guide, and the broader move is mapped in the
Northeast relocation guide. The one honest caveat is the income tax that Florida lacks, weighed in the
Grand Strand versus Florida comparison.
Frequently Asked Questions
