How is capital gains tax calculated in South Africa?

South Africa has no separate CGT rate. Instead, a portion of your net capital gain — the 'inclusion rate' — is added to your taxable income and taxed at your marginal rate. For individuals the inclusion rate is 40%, so a gain effectively taxed at most around 18% for top-rate (45%) taxpayers.

What is the annual exclusion?

Individuals get an annual capital gains exclusion of R40,000, meaning the first R40,000 of net gains each tax year is not taxed. The exclusion rises to R300,000 in the year of death. Companies and trusts get no annual exclusion.

What inclusion rate applies to me?

The inclusion rate is 40% for individuals and special trusts, and 80% for companies and ordinary trusts. So the same nominal gain produces a much larger taxable amount inside a company or trust than in an individual's hands.

What counts as base cost?

Base cost is generally what you paid for the asset plus allowable expenses — acquisition costs, improvement costs, and disposal costs like agent commission and transfer fees. A higher base cost lowers your gain and therefore your CGT. Keep records to support it.

Are there exemptions for my home?

Yes. A primary residence enjoys a R2 million exclusion on the capital gain (not the proceeds), so most ordinary home sales attract no CGT. This tool calculates the general case; subtract the primary-residence exclusion from your gain first if it applies.

South Africa Capital Gains Tax Calculator

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South Africa taxes capital gains not at a flat rate but by adding a fraction of the gain — the inclusion rate — to your income and taxing it at your marginal rate. This calculator applies the annual exclusion, the correct inclusion rate for your taxpayer type, and your marginal rate to give the actual CGT due.

How it works

The calculation follows the SARS method:

gain          = proceeds − baseCost
afterExclusion = max(0, gain − annualExclusion)   (R40,000 for individuals)
taxableGain   = afterExclusion × inclusionRate     (40% individual, 80% company/trust)
CGT           = taxableGain × marginalRate%
effectiveRate = CGT / gain

Because only the inclusion-rate fraction is taxed, the effective CGT rate is well below your headline marginal rate — at most about 18% for a 45% individual taxpayer.

Example and tips

An individual selling shares for R500,000 with a R300,000 base cost has a R200,000 gain. After the R40,000 exclusion, R160,000 remains; at the 40% inclusion rate the taxable gain is R64,000, and at a 39% marginal rate the CGT is about R24,960 — an effective rate near 12.5% on the gain. Hold assets in your personal name rather than a company where practical, since the 40% individual inclusion rate is half the 80% company/trust rate.