- SARS receives data on residents' foreign financial accounts automatically, under the OECD Common Reporting Standard (CRS).
- South Africa has exchanged since 2017: balances, interest, dividends and sale proceeds are reported by foreign institutions.
- CRS is how SARS checks, not what creates the tax: worldwide income goes on your ITR12 either way.
- SARS has moved from collecting the data to acting on it, querying taxpayers about undeclared offshore assets.
How SARS finds out
An offshore account is not invisible to SARS. South Africa takes part in the automatic exchange of financial-account information built on the OECD's Common Reporting Standard (CRS). A financial institution in a participating jurisdiction identifies account holders who are tax-resident elsewhere and reports them to its own tax authority, which sends the data on to the holder's home authority once a year. For a South African resident, that home authority is SARS.[1]
South Africa was an early adopter and has exchanged under CRS since 2017, and the partner network is wide, taking in the financial centres where brokers and banks are based.[2]
What is actually reported
CRS carries account-level data, not a copy of every trade: the account balance, and the interest, dividends and gross proceeds from selling financial assets, reported against each account holder.[1] Its purpose is to let SARS line up what you declared against accounts held in your name abroad.
Whether a particular broker account is caught turns on two things: that the broker is a financial institution holding a reportable account under CRS, and that its jurisdiction exchanges with South Africa.[1] A rand account with a local firm is domestic and never travels this route; a foreign bank account used to move money to a broker is squarely on it. The coverage is not uniform, so treating an offshore account as unseen is a poor bet.
You declare it either way
CRS is how SARS checks, not what makes the profit taxable. The duty to declare comes from the residence basis: a South African resident is taxed on worldwide income and reports foreign income on the annual ITR12 whether or not SARS already holds the account data.[3] How the profit itself is taxed, the rate and the deadlines, is the subject of the tax article: forex trading tax in South Africa.
This is not theoretical
SARS has moved from collecting the data to using it: it has begun issuing queries to taxpayers flagged through CRS, asking them to confirm offshore assets and account for the income.[4] The practical takeaway is the one that runs through this section: keep the broker's statements, declare the result, and do not rely on an offshore account staying quiet.
- SARS: FATCA and CRS: how the automatic exchange works, that SARS receives data on residents' foreign financial accounts, and what is reported (balances, interest, dividends and gross proceeds).
- SARS: exchange of information agreements: South Africa's participation in the automatic exchange of information and its partner jurisdictions.
- SARS: tax and non-residents: residents are taxed on worldwide income and declare foreign income on the ITR12.
- SARS acts on offshore account data (Polity): SARS issuing queries to taxpayers identified through the automatic exchange about offshore assets and income.