Income Tax: How the Rates Actually Compare
Income tax is where the biggest dollar difference lives for most people. The structures are fundamentally different — NC's flat rate means every dollar of taxable income above the standard deduction is taxed at 3.99%, while SC taxes income through a series of escalating brackets with a top rate of 6.2% in 2026.
North Carolina Income Tax (2026)
NC taxes all earned income at a single flat rate of 3.99%. The standard deduction for 2026 is $13,000 for single filers and $26,000 for married filing jointly. After subtracting that deduction, every dollar of remaining income is taxed at 3.99% — no brackets, no graduation. There are no local income taxes anywhere in North Carolina. Social Security benefits are fully exempt. All military retirement pay has been fully exempt since 2021. For more on how NC income tax is calculated, see our NC Income Tax Calculator guide.
South Carolina Income Tax (2026)
South Carolina uses a six-bracket progressive system. The top marginal rate has been decreasing by roughly 0.2% per year under ongoing rate-reduction legislation; it sits at approximately 6.2% for the 2025 tax year (filed in 2026). The brackets kick in quickly — the top rate applies to taxable income above about $17,000 — meaning most middle-income earners in SC spend the majority of their taxable income at or near the top bracket. SC's standard deduction mirrors the federal deduction (approximately $13,850 single / $27,700 MFJ for 2025 filings). Social Security and all military retirement pay are fully exempt.
Which Rate Is Lower — And When Does It Flip?
Because SC's top rate (6.2%) kicks in at a very low income threshold (~$17,000 of taxable income), most earners hit that rate almost immediately. The 0% bottom bracket only shelters the first ~$3,200 — a small offset. The crossover point where NC and SC produce roughly equal income tax bills is around $30,000–$35,000 of gross income for a single filer. Below that level, SC's 0% and 3% brackets produce modest savings. Above it, NC's flat 3.99% is consistently lower than SC's blended effective rate.
Real Dollar Comparison: What You Actually Pay
The tables below show estimated state income tax for a single filer at three common income levels, using each state's 2026 standard deduction and rates. Federal taxes are identical in both states and are excluded.
Income Tax at $45,000, $75,000, and $120,000
| Gross Income | NC Tax (3.99% flat) | SC Tax (~6.2% top) | NC Saves |
|---|
| $45,000 | ~$1,276 | ~$1,835 | ~$559/yr |
| $75,000 | ~$2,474 | ~$3,748 | ~$1,274/yr |
| $120,000 | ~$4,268 | ~$6,473 | ~$2,205/yr |
Estimates based on each state's 2026 standard deduction and current rates. Individual results vary by filing status and deductions.
How the Math Works at $75,000
For a single filer earning $75,000:
- North Carolina: $75,000 − $13,000 std deduction = $62,000 taxable × 3.99% = $2,474 in state tax
- South Carolina: $75,000 − $13,850 std deduction = $61,150 taxable. The first ~$16,000 passes through the 0%–6% brackets producing roughly $860 in tax, and the remaining ~$45,150 at 6.2% adds ~$2,799 — total roughly $3,659 in state tax
- Annual difference: NC saves approximately $1,185 per year, or about $99 per month in take-home pay
Married Filing Jointly at $120,000
For a married couple earning $120,000 combined:
- North Carolina: $120,000 − $26,000 = $94,000 taxable × 3.99% = $3,751 in state tax
- South Carolina: $120,000 − $27,700 = $92,300 taxable. Progressive brackets produce an effective rate of roughly 5.8%–6.0%, yielding approximately $5,400–$5,600 in state tax
- Annual difference: NC saves the couple roughly $1,650–$1,850 per year
Sales Tax, Property Tax, and Other Levies
Income tax gets the most attention, but the full picture includes sales tax, property tax, and miscellaneous levies that affect everyday spending and homeownership costs differently in each state.
Sales Tax Comparison
North Carolina's state sales tax rate is 4.75%, with local additions of up to 2.75% (most counties add 2.0–2.25%), bringing the typical combined rate to 6.75–7.00%. South Carolina's state rate is 6.00%, with local additions up to 3%, producing a typical combined rate of 7.00–9.00% in tourist-heavy areas. NC's rate is generally lower, and NC exempts most unprepared groceries from sales tax — a meaningful savings for families. SC also exempts most groceries at the state level but applies the local add-on in some counties.
Property Tax: SC's Biggest Advantage
This is where South Carolina pulls ahead clearly. NC's average effective property tax rate is approximately 0.80% of assessed value. South Carolina's is roughly 0.55–0.57% — about 30% lower. On a $350,000 home, that difference is:
- NC property tax: ~$2,800/year
- SC property tax: ~$1,925/year
- SC saves: ~$875/year for a homeowner at this price point
SC also assesses primary residences at only 4% of fair market value (vs. the full assessed value in NC), which amplifies the rate advantage for owner-occupants. For NC county-by-county rates, see our NC Property Tax Rates by County guide.
Other Tax Differences Worth Knowing
Both states have no estate or inheritance tax. NC has no local income taxes anywhere in the state; SC similarly has none. NC's gas tax is $0.385/gallon; SC's is $0.28/gallon — SC drivers pay about 10 cents less per gallon at the pump, which adds up over the course of a year. Vehicle registration fees are broadly similar between the two states. Neither state levies an intangibles tax on investment accounts.
Which State Wins for Retirement?
Retirees face a different tax calculus than working adults, and the answer shifts depending on income sources. Both states exempt Social Security. Both now fully exempt military retirement pay. The differences that remain are income tax on retirement account withdrawals, property taxes, and overall cost of living.
Retirement Account Withdrawals (401k / IRA / Pension)
Traditional 401(k) and IRA withdrawals are fully taxable as ordinary income in both states. This is where NC's flat 3.99% rate provides a clear advantage over retirees who draw significant amounts from tax-deferred accounts. A retiree taking $80,000 per year in 401(k) distributions would pay roughly:
- NC: ($80,000 − $13,000) × 3.99% = ~$2,675/year in state tax
- SC: With the SC deduction and progressive brackets at $80,000 total income: approximately $3,400–$3,800/year in state tax
NC saves this retiree roughly $700–$1,100 per year on income taxes. For more detail on how NC taxes retirement income, see our NC Retirement Income Taxes guide.
Military Retirees: Now Equal in Both States
This used to be an easy SC win — South Carolina has always fully exempted all military retirement pay from state income tax. North Carolina enacted full military retirement exemption in 2021 (effective for tax years beginning on or after January 1, 2021), eliminating this advantage for SC. Military retirees now pay zero state income tax on their retirement pay in either state. For military households choosing between the two states, the tiebreaker shifts to property taxes (SC advantage), cost of living, and proximity to bases.
Property Taxes for Retirees on Fixed Incomes
SC's lower property tax rates (0.55% vs NC's ~0.80%) are especially meaningful for retirees who own their homes outright and live on fixed incomes. On a $300,000 home, SC saves roughly $750/year in property taxes compared to NC. Both states offer homestead exemptions for qualifying seniors and disabled residents that reduce assessed value further. SC's Circuit Breaker program caps property taxes at a percentage of income for low-income seniors — a meaningful protection NC does not offer in quite the same form.
Should You Move? What the Numbers Mean in Practice
Taxes are one input into the relocation decision, not the only one. The dollar differences calculated above are real, but they need context against differences in cost of living, job market, and housing prices between specific NC and SC cities.
Charlotte vs Columbia / Greenville vs Raleigh
The Charlotte metro straddles the state line — Rock Hill and Fort Mill, SC are effectively Charlotte suburbs where many Charlotte workers live to take advantage of SC's lower property taxes while working in NC. The income tax arbitrage is trickier here: you'd file as a SC resident (higher income tax rate) but work in NC. SC residents who work in NC typically pay NC withholding tax and claim a SC credit for taxes paid to NC, which mostly neutralizes the income tax difference. The property tax benefit, however, is real and uncomplicated. For a detailed Charlotte salary and cost breakdown, see our Charlotte NC Cost of Living & Salary Guide.
When NC Comes Out Ahead Overall
NC tends to win the overall comparison for: high-income W-2 employees (income tax savings outweigh property tax difference), renters (don't benefit from SC's property tax advantage), households in mid-size NC cities like Greensboro or Winston-Salem (cost of living is already competitive without crossing the border), and retirees with significant IRA/401(k) income. NC's job market in tech, finance, and healthcare is also meaningfully larger than SC's in comparable metro areas. For salary context, see our Average Salary in North Carolina guide.
When SC Comes Out Ahead Overall
SC tends to win for: homeowners in high-value properties (property tax savings compound over time), retirees on modest fixed incomes where the low property tax and SC's Circuit Breaker are meaningful, coastal lifestyle seekers (Myrtle Beach, Hilton Head, Beaufort), and households with income under $35,000 where SC's lower bracket rates produce modest income tax savings. Moving costs themselves should factor into any calculation — if the annual tax savings are $1,200, a move that costs $15,000 takes over 12 years to break even on taxes alone.
Frequently Asked Questions
Does North Carolina or South Carolina have lower taxes overall?
It depends on your income and homeownership status. NC has lower income taxes for most working adults (flat 3.99% vs SC's progressive rate topping at 6.2%) and lower sales taxes. SC has lower property taxes (roughly 30% lower effective rate). For a single renter earning $60,000+, NC almost always produces a lower combined tax bill. For a homeowner in a $400,000 property with moderate income, the SC property tax savings can offset the income tax difference. There is no single answer — you need to run your specific numbers.
If I live in SC but work in NC, which state taxes my income?
NC will withhold state income tax from your paycheck as the state where you work. You'll file a non-resident NC return and a resident SC return. SC allows a credit for taxes paid to another state, which eliminates most (but not always all) of the double-taxation. In practice, residents of Rock Hill or Fort Mill who commute to Charlotte typically end up paying the higher of the two states' rates — and since NC's rate (3.99%) is lower than SC's effective rate for most earners, you may owe SC a small true-up at filing. Consult a CPA familiar with both states if you're in this situation.
Is it worth moving from NC to SC just for taxes?
Rarely, unless you're a high-value homeowner or retiree with specific circumstances. At $80,000 income, the income tax savings from staying in NC over moving to SC are roughly $1,200–$1,500 per year. If you own a $500,000 home, SC's property tax advantage is roughly $1,150 per year. The two nearly cancel out for a typical middle-class homeowner. The real tax-motivated move cases are: high-income earners ($200,000+) where NC's flat 3.99% saves $4,000+ per year vs SC, and retirement relocations where SC's property tax advantage and lower cost of living compound over 20–30 years.
How do I calculate my NC take-home pay to compare against SC?
Use our NC Paycheck Calculator to see your exact take-home after federal taxes, NC state income tax at 3.99%, Social Security, and Medicare. For the SC comparison, apply SC's progressive rates to your taxable income (gross minus SC's standard deduction) and compare. Most mid-career professionals will find NC take-home is $50–$200 per month higher than the SC equivalent at the same salary, with the gap widening at higher incomes. For the full context of what that paycheck buys in NC, see our NC Cost of Living guide.
