How commission earners are taxed in South Africa.

What counts as a commission earner

A "commission earner" for South African tax purposes is someone whose remuneration is derived mainly, more than 50%, in the form of commission based on sales or turnover attributable to them. The category cuts across many professions:

• Financial advisors and wealth managers
• Insurance brokers and short-term insurance agents
• Mortgage and bond originators
• Real estate agents and property practitioners
• Medical aid brokers
• External sales representatives
• Investment brokers and stock brokers

What unites these roles for tax purposes is not the industry, it is the income structure. If more than half of the annual remuneration is commission-based, the taxpayer falls within the section 23(m) exception and is entitled to claim section 11(a) deductions for expenses actually incurred in producing that income.

The 50% commission test

Section 23(m) of the Income Tax Act limits the deductions available to employees. The general rule is that an employee cannot claim section 11(a) business expense deductions against employment income. There is, however, a critical exception.

The exception applies where a person's remuneration is "derived mainly in the form of commissions based on sales or the turnover attributable to him or her". SARS interprets "mainly" as more than 50%, making this the central test for commission earners.

How the test is calculated

The test is applied annually, on total remuneration for the tax year. It is not applied month by month. A commission earner who has a slow January is not penalised, what matters is whether the year's remuneration is more than half commission-based.

Total remuneration includes salary, commission, bonuses, allowances, and fringe benefits. The numerator is the commission portion. If commission > 50% of total remuneration, the test is passed.

What happens if the test fails

If the commission portion is 50% or less, section 23(m) applies and the taxpayer cannot claim section 11(a) deductions. The income is treated like any other PAYE-only employment income. This often happens when commission earners receive a large guaranteed retainer or when sales are seasonal and the commission portion drops below the threshold.

The structuring of the remuneration package is therefore a tax decision, not just a commercial one. A package that pays 60% commission unlocks significantly different tax treatment from a package that pays 45%.

Important: Some commission earners discover only at tax-filing time that their package failed the 50% test. By then, expenses have already been incurred on the assumption that they would be deductible. Setting the package up correctly in advance is the work, not the discovery later.

Allowable deductions

A commission earner who passes the 50% test can claim expenses actually incurred in the production of commission income under section 11(a), provided they are not capital in nature and not specifically prohibited under section 23. Below are the common categories.

Home office, the most-claimed, most-reviewed deduction

The home office deduction is the most commonly claimed by commission earners and the most commonly challenged by SARS. To pass review, the home office must be regularly and exclusively used for trade and specifically equipped for the purpose. The deduction is calculated as the proportion of the home used as office (typically by floor area) multiplied by qualifying running costs, rates, electricity, water, repairs, and the interest portion of any home loan.

Vehicle, logbook is non-negotiable

The vehicle deduction requires a logbook. Without one, no deduction is allowed. The logbook must record the date, opening and closing odometer, kilometres travelled, and the business reason for each trip. Modern logbook apps make this far less painful than manual recording. The deduction is calculated as business kilometres / total kilometres × actual annual vehicle costs.

Provisional tax obligations

Commission earners are mandatorily registered as provisional taxpayers because their income is not fully covered by PAYE. PAYE only deducts tax based on assumed standard salary structures, it does not anticipate annual deductions or commission swings. Provisional tax fills the gap.

The provisional tax cycle

• First period (paragraph 21): Estimate of annual taxable income, with the first payment of half the estimated annual liability. Due by the end of the sixth month of the tax year, typically 31 August for taxpayers with a February year-end.
• Second period (paragraph 22): Final estimate, with the balance of the year's tax. Due by the end of the tax year, typically 28 February.
• Voluntary third top-up (paragraph 23A): An optional further payment within six months of year-end (by 30 September for February year-end taxpayers) to settle any shortfall and avoid interest under section 89quat.

Under-estimation penalties

SARS imposes a 20% under-estimation penalty under paragraph 20 of the Fourth Schedule where the second-period estimate is too low. The thresholds depend on taxable income:

• Taxable income above R1 million: The estimate must be at least 80% of actual taxable income. If lower, the 20% penalty applies on the difference.
• Taxable income at or below R1 million: The estimate must be at least 90% of actual taxable income, OR equal to the "basic amount" (broadly the previous year's taxable income). If lower, the 20% penalty applies.

For commission earners with variable income, the under-estimation risk is real. A booming Q4 or a large year-end commission can push the actual taxable income materially above the second-period estimate, triggering the penalty. This is one reason structured monthly tracking matters.

Common errors and SARS reviews

SARS verifies and audits commission earners regularly. The same errors recur:

Inflated home office claims

Claiming 30% of the home as office when there is one desk in a corner of the lounge. SARS calculates by area and expects supporting evidence, a dedicated, exclusive workspace.

No logbook for vehicle claims

SARS will disallow the entire vehicle deduction if there is no logbook. "Approximate" or "reconstructed" logbooks are heavily scrutinised and often rejected.

Personal expenses claimed as business

Family meals dressed as client entertainment. Personal subscriptions claimed under software. Personal vehicle use claimed as business. SARS reviews bank statements during audits and these patterns are visible.

Wrong PAYE categorisation by the employer

Some employers apply standard PAYE without recognising the commission earner status, which prevents proper monthly tax planning. The fix is at the IRP5 level, but it is the taxpayer who carries the consequence at filing.

Section 11(a) vs PAYE confusion

Where a commission earner shares a household with a PAYE-only spouse, there is sometimes confusion about which deductions apply to whom. PAYE-only earners do not get the section 11(a) treatment.

Cell phone and data over-claims

Claiming 100% of a personal phone as business. SARS expects realistic apportionment, typically 60–80% for active commission earners, with records to support.

Structuring options for higher earners

As commission income grows, the question of structuring usually arises. The answer is rarely "register a company", it is more often "optimise the existing structure first". The common options:

Sole proprietor (the default)

The default position for a commission earner. Income is taxed at marginal individual rates, with section 11(a) deductions available against that income. For most commission earners up to R1.5–2 million annual income, the sole proprietor structure remains the most efficient because of the marginal rate progression and access to deductions.

Personal services company (with caution)

Operating commission income through a private company can offer some structuring advantages, but triggers the personal services provider rules in the Fourth Schedule. A company classified as a personal services provider:

• Loses most of the company-level deductions normally available
• Is taxed at the company rate (currently 27%) without the deduction shielding
• Often produces a worse outcome than the sole proprietor route

Personal services company structures should only be considered after a proper tax-and-commercial assessment. The wrong move here destroys value rather than adding it.

Trust ownership of structures

For higher-earning commission earners building wealth long-term, trust structures may have a role, but typically as a wealth and estate planning vehicle, not a tax-saving vehicle. Section 7C of the Income Tax Act and the trust attribution rules (sections 25B and 7) make "tax-saving" trust strategies far harder to execute than they once were. Trusts are about protection and longevity, not tax cuts.

Retirement annuity contributions

Probably the simplest and most underused structuring lever. Retirement annuity contributions are deductible up to 27.5% of the greater of remuneration or taxable income, capped at R350,000 per year. For a commission earner in the 41% or 45% marginal bracket, this is meaningful tax saving with retirement benefit attached.

Cost-to-company package optimisation

The structure of the package itself, fixed vs commission split, allowances, fringe benefits, retirement contributions, has a direct effect on tax outcome. Optimisation here is often the single highest-impact lever.

Year-end and tax return planning

The work for a clean commission earner tax return starts long before February. By the time the IRP5 lands, much of the value has already been won or lost. The key elements:

• Document collection. Throughout the year, not at year-end. IRP5s, commission statements, all expense receipts, bank statements, invoices.
• Logbook reconciliation. Verify the logbook against the year's commission activity. Identify gaps before they become deduction failures.
• Home office calculation. Re-measure if anything changed during the year. Keep the calculation on file.
• Provisional tax true-up. Compare second-period estimate with actual likely outcome. Decide on the voluntary third top-up.
• ITR12 completion. Filed through eFiling. The relevant deduction sections must be completed correctly, not bundled into "other deductions".

The bottom line

Commission earner tax in South Africa rewards structure. The 50% test, the section 11(a) deductions, the provisional tax cycle, the structuring decisions, none of these are accidentally optimised. They are deliberately set up at the start of the year and tracked through it.

Commission earners who treat tax as a year-end event almost always leave money on the table. Commission earners who run their tax position month-by-month, with proper records and a clear structuring decision, do not.