South Carolina Capital Gains Tax Calculator

A $100,000 long-term gain is treated, for South Carolina tax purposes, as if it were only a $56,000 gain — the 44% deduction removes $44,000 from the taxable amount before the state's regular rates even apply.

The fine print that actually matters: what counts as "net"

The deduction applies specifically to net long-term capital gain — defined by the state as net long-term capital gain minus any net short-term capital loss. Two things follow from this: short-term gains (assets held one year or less) get no deduction at all and are taxed in full at ordinary rates, and the holding period test uses the same one-year threshold as the federal government's.

Combined with South Carolina's 2026 bracket reform

South Carolina restructured its income tax brackets for 2026 under Act 110 (H.4216), collapsing what had been six brackets into just two: 1.99% on the first $30,000 of taxable income, 5.21% above that — applied identically regardless of filing status. Combined with the 44% long-term deduction, the practical effect is that most long-term capital gains in South Carolina end up facing a meaningfully lower effective rate than the headline 5.21% top bracket would suggest.

Scenario	Effective SC treatment
Long-term gain	Only 56% of the gain is taxable (44% deducted)
Short-term gain	100% of the gain is taxable, no deduction

What this means for timing a sale

Because the deduction applies only to gains held over a year, the tax difference between selling an asset at 11 months versus 13 months can be substantial in South Carolina — not just the usual federal short-term-versus-long-term gap, but the state's own 44% deduction stacking on top of it. For anyone with real flexibility on when to sell, confirming the exact holding period before executing a sale is worth the few minutes it takes.

The 44% net long-term capital gain deduction verified directly against the South Carolina Department of Revenue's own published FAQ, with the effective-rate mechanic cross-checked against multiple independent 2026 tax guides showing a matching worked example. South Carolina's 2026 bracket structure (Act 110/H.4216) reused from our validated state paycheck research. This is a planning estimate — a CPA licensed in South Carolina can confirm your specific eligibility.