The four things that get taxed
Every rand your investments produce falls into one of four buckets, and each is taxed differently. Almost all confusion about investment tax comes from mixing them up.
| Bucket | What triggers it | How it is taxed | Who pays it over |
|---|---|---|---|
| Capital gains | Selling or disposing of an asset | A portion of the gain is added to your income, after an annual exclusion | You, via your return |
| Dividends | A company or fund pays a dividend | Withholding tax deducted at source | The company - you receive the net amount |
| Interest | Interest is earned | Added to your income above the annual exemption | You, via your return |
| Foreign income | Dividends, interest or gains from abroad | Declared in rand, often with a credit for foreign tax paid | You, via your return |
Note that growth alone is not on this list. Shares rising in value creates no tax event whatsoever. This matters more than any clever strategy: the longer you hold, the longer tax is deferred, and deferred tax keeps compounding for you.
1. Capital gains tax
CGT applies when you dispose of an asset - usually by selling it, but also by transferring it or emigrating. The mechanics:
- Work out the gain. Proceeds minus base cost. Base cost includes what you paid plus allowable costs such as brokerage on the purchase.
- Subtract the annual exclusion. Every individual has an annual capital gain exclusion. Gains below it in a tax year attract no CGT at all.
- Include a portion in your income. Only a set percentage of the remaining gain - the inclusion rate - is added to your taxable income.
- Pay at your marginal rate on that included portion.
Because only part of the gain is included, the effective tax rate on capital gains is meaningfully lower than on ordinary income. That is deliberate, and it is why capital growth is a tax-efficient way to build wealth compared with income.
Three practical consequences
- Frequent trading is expensive. Every profitable sale realises a gain. Someone who trades constantly pays tax repeatedly on money that could have kept compounding.
- Timing across tax years helps. Splitting a large disposal across two tax years can use two annual exclusions instead of one.
- Losses are useful. Capital losses offset capital gains in the same year, and unused losses generally carry forward.
One important distinction: if SARS considers you to be trading rather than investing - frequent, short-term, profit-motivated buying and selling - your profits can be treated as revenue and taxed as ordinary income at your full marginal rate, with no exclusion or inclusion rate. There is no single test; SARS looks at intention and behaviour. Long-term investors have little to worry about here. Active traders should get proper advice.
2. Dividends withholding tax
When a South African company or fund pays a dividend, dividends withholding tax is deducted before it reaches you. You receive the net amount, and the company pays SARS directly.
Practically, this means dividends are usually already dealt with by the time you see them. You still declare them, but you generally do not pay again. Our guide to dividend investing covers how yields and payment dates work.
An important exception: real estate investment trusts (REITs) work differently. REIT distributions are generally taxed as ordinary income in your hands at your marginal rate, rather than being subject to dividends withholding tax. Investors who add REITs for the yield are sometimes surprised by the tax treatment.
3. Tax on interest
Interest from savings accounts, fixed deposits, bonds and money market funds is added to your taxable income - but only above the annual interest exemption, which is set at a higher level for people aged 65 and over.
Many South Africans with modest cash balances never pay tax on interest at all because they sit below the threshold. Above it, the excess is taxed at your marginal rate, which is why interest is the least tax-efficient form of investment return for higher earners.
This is a strong argument for keeping cash-like holdings inside a tax-free savings account where possible, and for not holding more in cash than your plan actually requires. See the safest investments in South Africa.
4. Foreign investments
South African tax residents are taxed on worldwide income and gains. Holding assets offshore does not remove them from SARS's reach.
- Foreign dividends are taxable here. Tax withheld abroad - such as the 15% US treaty rate on dividends, if you completed a W-8BEN - can generally be claimed as a foreign tax credit so you are not taxed twice.
- Foreign capital gains are calculated in rand, using the exchange rate at purchase and at sale. This is the part people miss: currency movement affects your taxable gain. A share that was flat in dollars can produce a taxable rand gain if the rand weakened over the holding period.
- Foreign interest is taxable and does not benefit from the local interest exemption in the same way.
The practical instruction is simple: keep records from your first offshore trade. Purchase dates, prices, exchange rates and every dividend statement. Reconstructing this five years later is genuinely awful. Our guide to the cost of buying US stocks from South Africa covers the related fees.
The two accounts that change everything
Tax-free savings account
Inside a TFSA, none of the four buckets apply. No CGT on disposals, no dividends tax, no tax on interest. Growth is genuinely tax-free.
The rules you must respect:
- An annual contribution limit and a lifetime limit. Exceeding them attracts a penalty tax on the excess - a rare case where a mistake is directly and expensively punished.
- Withdrawals do not restore your allowance. Take money out and that portion of your lifetime limit is gone permanently. This is why a TFSA should be treated as long-term money despite being accessible.
Because the benefit grows with the size of the gain, a TFSA is best used for your highest-growth assets over the longest period - not as a savings account.
Retirement annuities and pension funds
These work differently and stack a benefit at each stage:
- Contributions are deductible up to the annual limits, reducing your taxable income now.
- Growth is untaxed while the money remains in the fund - no CGT, no dividends tax, no tax on interest.
- Tax applies at withdrawal, when lump sums and income drawn in retirement are taxed under their own tables.
The trade-off is access - the money is locked until at least 55 - and Regulation 28, which caps how much can sit in shares, property and offshore assets. Our full comparison is in TFSA vs retirement annuity.
Contribute to a retirement annuity for the deduction now. Contribute to a TFSA for the tax-free growth later. They solve different problems, and most people benefit from using both.
Asset location: the underused idea
If you hold money across a TFSA, a retirement annuity and a taxable account, which investments you put in each one affects your after-tax outcome - without changing your overall allocation at all.
The general logic: put the most heavily taxed and highest-growth assets in the sheltered accounts, and the most tax-efficient ones in the taxable account.
| Asset | Tax drag if held in a taxable account | Tends to belong |
|---|---|---|
| High-growth equity funds | CGT on eventual disposal | TFSA - the tax-free growth is worth most here |
| Interest-bearing assets | High - taxed at marginal rate above the exemption | Sheltered accounts |
| REITs | High - distributions taxed as income | Sheltered accounts |
| Buy-and-hold equity ETFs | Low while you hold - no disposal, no CGT | Fine in a taxable account |
Practical habits that save you money
- Keep records from day one. Purchase dates, prices, costs, dividend statements, exchange rates for anything foreign. Your future self at filing time will be grateful.
- Use your annual exclusions. The capital gain exclusion and the interest exemption reset each tax year and cannot be carried forward. Unused, they are simply gone.
- Do your selling inside sheltered accounts. Rebalancing inside a TFSA or RA triggers no CGT at all - see how to rebalance.
- Trade less. Every realised gain is tax paid early on money that could still be compounding.
- Do not let tax drive investment decisions. Holding a bad investment purely to avoid CGT is a common and costly error. Tax should shape how you invest, not what you decide is worth owning.
When to get help
A salary, a TFSA and a couple of local funds is well within do-it-yourself territory. Bring in a registered tax practitioner when you have significant offshore holdings, an inheritance, a business interest, share options from an employer, an emigration in progress, or a disposal large enough for the tax to be material. The fee is usually small next to the cost of getting one of those wrong.
Make tax season less painful
Most of the difficulty at filing time is missing records, not difficult rules. EZvest's portfolio view gives you one place to see what you hold, the Learning Hub covers accounts and tax basics in short lessons, and FinBot can explain any term in plain language. It is an educational tool, not a tax adviser - it explains, you decide.
Frequently asked questions
Do I pay tax when my shares go up in value?
No. Capital gains tax is triggered by a disposal - selling, transferring or otherwise disposing of the asset - not by an increase in value. An unrealised gain on shares you still hold creates no tax liability, which is one reason long-term holding is tax-efficient.
How is capital gains tax calculated in South Africa?
You work out the gain (proceeds less base cost), subtract the annual capital gain exclusion, then include a set percentage of the remainder in your taxable income, where it is taxed at your marginal rate. Because only a portion is included, the effective rate on capital gains is lower than on ordinary income. Rates and exclusions change, so check current SARS figures.
Is dividend income taxed in South Africa?
Yes. Dividends withholding tax is deducted at source by the company or fund before the money reaches you, so the amount in your account is already net of it. You generally do not pay again, but you still declare it. Dividends inside a tax-free savings account are exempt.
Do I pay tax on interest from my savings account?
Only above the annual interest exemption, which is higher for people aged 65 and over. Below that threshold, local interest is not taxed. Above it, the excess is added to your income and taxed at your marginal rate.
Do I have to declare foreign investments to SARS?
Yes. South African tax residents are taxed on worldwide income and gains, so foreign dividends, interest and capital gains must be declared, converted to rand. Tax already withheld abroad can often be claimed as a foreign tax credit, so keep every statement.
Is a tax-free savings account really tax-free?
Within the rules, yes - no tax on growth, dividends, interest or capital gains inside the account. The limits are what you must respect: an annual contribution cap and a lifetime cap, with penalty tax on excess contributions. Withdrawals do not restore your allowance, so money taken out is permanently lost from the wrapper.
Keep track of what you own
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Launch EZvest - it's free to start ->Educational content only. This article is general information, not financial or tax advice. Tax rates, thresholds, exclusions and contribution limits change regularly and depend on your personal circumstances - always confirm current figures with SARS or a registered tax practitioner. Consult a licensed financial professional before making decisions. How we research and review these guides.