Taxes in Fort Mill
South Carolina's two-bracket income tax under Act 110 (1.99%/5.21%, effective tax year 2026) applies to Fort Mill residents statewide, layered with a combined sales tax consistently cited at 7% and York County's highest municipal property-tax millage (~0.95% effective in Fort Mill/Tega Cay).
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Learn moreSC's Act 110 two-bracket income tax -- restated as place-level context
South Carolina replaced its prior three-bracket 0%/3%/6.2% schedule with two brackets under Act 110: 1.99% on the first $30,000 of SC taxable income, 5.21% above that (minus a $966 subtraction), effective for tax year 2026 -- independently re-verified against this dataset's other SC records' own SCDOR/Governor's-office/PolicyEngine citations.
Social Security exemption and coordinated retirement deductions
Social Security income is fully exempt from SC income tax at any age. SC separately offers a retirement-income deduction (up to $10,000 for filers 65+, up to $3,000 under 65) and a general age-65 deduction of $15,000 -- these coordinate rather than stack additively.
Fort Mill's combined sales tax: real cross-source agreement
Fort Mill's combined sales tax rate is consistently cited at 7% (6% state + 1% special-district tax) across sources reviewed -- unlike Rock Hill's own disclosed rate disagreement documented elsewhere in this dataset, Fort Mill's rate showed genuine agreement across sources this pass.
Property tax: the highest municipal millage in York County
Fort Mill (town limits) and Tega Cay carry an effective property tax rate around 0.95% -- roughly $4,700/year on a $500,000 home, meaningfully above Rock Hill's own ~0.86% rate and well above unincorporated York County's 0.50%-0.66%. South Carolina's 4%-owner-occupied / 6%-non-owner-occupied assessment-ratio split applies statewide; the lower rate requires an active "legal residence" application with the York County Assessor.
Key takeaways
- South Carolina's two-bracket income tax (1.99%/5.21% under Act 110, effective TY2026) applies statewide; Social Security is fully exempt.
- Fort Mill's combined sales tax is consistently cited at 7% across sources -- real cross-source agreement, unlike Rock Hill's own disclosed disagreement.
- Property tax runs meaningfully higher in Fort Mill/Tega Cay (~0.95% effective, ~$4,700/year on a $500K home) than elsewhere in York County -- the county's highest municipal millage.
- Apply for the 4% owner-occupied "legal residence" assessment ratio with the York County Assessor -- it is not automatic.
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