Capital Gains Tax Calculator South Africa: What You’ll Owe in 2026

Capital Gains Tax, or CGT, is not a separate tax in South Africa — it forms part of your normal income tax. When you sell or dispose of an asset for more than what it originally cost you, the resulting profit is called a capital gain. SARS then includes a portion of that gain in your taxable income, and you pay tax on it at your normal marginal rate.

The word “dispose” is broader than most people assume. It covers not just an outright sale, but also donations, exchanges, expropriations, and even the death of a taxpayer. CGT has applied in South Africa since 1 October 2001 — any gain on assets acquired before that date is calculated only from the “valuation date” value, not the original purchase price.

CGT applies to individuals, companies, and trusts. As a South African resident, you are liable for CGT on assets located anywhere in the world. Non-residents are only liable on immovable property in South Africa or assets of a permanent establishment here.

Budget 2026, delivered by the Minister of Finance on 25 February 2026, brought important CGT changes — not to the rates or inclusion percentages, but to the exclusion thresholds. These are the amounts that are completely exempt from CGT. The good news: every major exclusion went up.

These higher exclusions apply from the 2026/2027 tax year (starting 1 March 2026). So if you are selling an asset on or after 1 March 2026, you benefit from the new, more generous thresholds.

For most South Africans selling their primary home, the increase from R2 million to R3 million is the most significant change. It means a larger portion of your property profit is completely tax-free — particularly valuable in cities like Cape Town and Johannesburg where property values have grown sharply over the past decade.

Many South Africans overpay CGT simply because they don’t know which costs can be added to the base cost of their asset. Every rand you legitimately add to your base cost reduces your capital gain — and therefore your tax bill. Here is the correct calculation sequence:

What counts as Base Cost? This is where most taxpayers leave money behind. Your base cost includes far more than just the purchase price:

The effective CGT rate you pay depends on who you are — individual, company, or trust — because each has a different inclusion rate. Companies and trusts pay a much higher share of their capital gains than individuals.

Property is the most common CGT scenario for South Africans. Whether you are selling your family home, an investment rental, or a commercial property, the rules differ significantly — and understanding them can save you hundreds of thousands of rands.

Primary Residence: If you own a property, live in it as your main home, and sell it for a gain under R2 million (or R3 million from 1 March 2026), you pay zero CGT. This is the primary residence exclusion — and it is one of the most valuable tax benefits available to South African homeowners. To qualify, the property must be owned by a natural person (not a company or trust) and you or your spouse must ordinarily live there as the main residence.

Investment Property: If the property was never your primary residence — for example, a buy-to-let you rented to tenants — no primary residence exclusion applies. Your gain above the R40,000 annual exclusion will attract CGT. Many property investors are surprised by the liability when selling long-held properties in high-growth areas.

Mixed-use property: If you lived in part of your home and used another part for business, or if you rented it out for a period before selling, the exclusion must be apportioned. The portion of the gain attributable to the business or rental use does not qualify for the R2 million exclusion.

Non-resident sellers of South African property face a withholding tax (WHT) of 7.5% applied by the buyer at the time of sale. This is an advance payment towards the seller’s final CGT liability — not an additional tax on top of CGT. If your actual liability is less than the WHT withheld, SARS will refund the difference.

When you sell shares, ETFs, or unit trust investments for a profit, the gain is generally subject to CGT — provided you hold the investment with a long-term capital appreciation intent, rather than as a short-term trading activity. The distinction matters enormously: a long-term investor pays a maximum effective rate of 18%, while a trader could pay up to 45% on the same profit.

Your base cost for shares includes the purchase price plus all brokerage fees, platform administration fees, and the Securities Transfer Tax (STT) paid at the time of purchase. These allowable costs reduce your capital gain directly.

An important practical tip: if you have multiple share purchases at different prices (cost averaging), SARS uses a first-in, first-out (FIFO) method by default to determine which units are sold first — unless you can provide specific lot identification records. Keeping detailed trading records is essential for defending a lower CGT calculation under audit.

SARS treats cryptocurrency as an asset of intangible nature — not as currency. This means profits from selling, swapping, spending, or gifting crypto are taxable events, subject to either CGT or income tax depending on your intent and trading frequency.

Long-term crypto investors who hold digital assets for capital appreciation typically pay CGT at a maximum effective rate of 18% — benefiting from the 40% inclusion rate and the R40,000 annual exclusion. Frequent crypto traders who actively buy and sell based on short-term price movements are likely to be taxed at their full income tax rate of up to 45% on the entire profit.

The question of whether your activity is “investing” or “trading” is determined case by case by SARS, based primarily on your motive for acquiring the asset and how long you held it. There is no bright-line rule — but holding crypto for more than a year and not actively trading generally supports a capital interpretation.

The practical implication of CARF is significant: undeclared crypto gains are now far easier for SARS to detect. Exchanges are legally obligated to report your transactions directly to SARS. If your ITR12 shows no crypto activity but your exchange records show significant disposals, you face a SARS verification letter at minimum — and potential penalties of up to 200% of underpaid tax in cases of intentional non-disclosure.

Crypto-to-crypto swaps are also taxable events. SARS treats a token-for-token exchange as two simultaneous disposals — you “sell” the outgoing coin at its ZAR value on the day, and “buy” the incoming coin at the same value. Any gain on the coin you gave up must be reported.

South African tax law provides several powerful exclusions that can significantly reduce or entirely eliminate your CGT liability. Knowing and claiming these correctly is one of the highest-value things you can do in your annual tax return.

Capital gains do not have a separate SARS return. They are declared as part of your annual ITR12 income tax return, in the Capital Gains section. The tax year runs from 1 March to 28 February, and your ITR12 is submitted during the annual Filing Season — typically July to October for most individual taxpayers, and up to January for provisional taxpayers.

For each asset sold during the tax year, you will need to capture: the date of acquisition, proceeds from the sale, base cost, and any applicable exclusions. SARS’s eFiling system and the SARS MobiApp both have guided steps to walk you through this. If you are using a tax practitioner, provide them with a full asset disposal schedule including all supporting receipts.

CGT is a legal obligation — but South African tax law provides legitimate tools to reduce what you pay. Here are five strategies used by experienced investors and tax practitioners:

1. Maximise your base cost. Every allowable cost you include reduces your gain directly. Go through your records carefully: forgotten renovation invoices, legal fees, and compliance certificates all count. On a R500,000 gain, finding R50,000 of forgotten base costs reduces your CGT by approximately R7,800 at an 18% effective rate.

2. Spread disposals across tax years. Sell one asset in February and the next in March — two separate tax years, two annual exclusions. At the new R50,000 rate (from 2026/27), each exclusion saves you up to R9,000 in CGT at maximum effective rates.

3. Offset losses against gains. If you have loss-making investments, consider disposing of them in the same year you realise a large gain. The losses offset your gains rand for rand before the inclusion rate is applied.

4. Use your spouse’s annual exclusion. Transfers between spouses are CGT-deferred — meaning no CGT triggers at the time of transfer. When the asset is eventually sold, the receiving spouse’s annual exclusion also applies, effectively doubling the exclusion available for a couple.

5. Time the sale correctly. If your income will be lower in a future tax year — for instance, if you are retiring — your marginal tax rate will be lower, and so will the CGT payable on the same gain. Timing a major asset disposal to coincide with a lower-income year can produce meaningful savings.