More South Africans are working from home than ever before. Fewer are claiming the tax deduction they are entitled to — and some who do claim it are doing so incorrectly, creating a capital gains tax problem they won't discover until they sell their property. This article covers who qualifies, what you can deduct, how to calculate it, and the one risk most people overlook.
Who Can Claim a Home Office Deduction?
The home office deduction is governed by Section 23(b) of the Income Tax Act. The rules differ depending on whether you are an employee or self-employed.
Employees
An employee can claim a home office deduction only if:
1. More than 50% of their total working time is spent working from home 2. The space is specifically equipped for the purposes of their work 3. Their employer requires them to work from home — it is not sufficient that the employer merely permits it
The third requirement eliminates most claims. If your employment contract does not require you to work from home, or if your employer has a physical office available to you, SARS may disallow the deduction on audit. "We've been remote since COVID" does not satisfy the requirement unless it is documented in your contract or a formal letter from your employer.
Self-Employed, Sole Proprietors, and Commission Earners
Sole proprietors and freelancers face a less restrictive test. There is no requirement that a client or employer mandate the home office — the test is whether the space is used regularly and exclusively for business purposes.
Commission earners (earning more than 50% of their remuneration as commission) are treated similarly to self-employed individuals for this purpose, and may claim under both Section 23(b) and Section 23(m).
The "Regularly and Exclusively" Requirement
Regardless of employment status, the space claimed must be used regularly and exclusively for work. This means:
- –A dedicated room — not a corner of the lounge cleared on weekday mornings
- –A room specifically equipped for the work performed (desk, computer, filing, relevant equipment)
- –No personal use of the room during the period claimed
A study that doubles as a children's homework room does not meet the test. A bedroom with a desk in the corner does not meet the test. If SARS audits the claim, they may request photographs and a floor plan — and those documents need to show a room that is unambiguously a dedicated office.
What Expenses Can You Deduct?
The deduction is calculated as a proportion of qualifying home expenses, using the ratio of the office floor area to the total floor area of the home.
Formula: (Office area ÷ Total home area) × Qualifying annual expenses
Qualifying expenses:
- –**Rent** — your proportional share of monthly rent if you are a tenant
- –**Bond interest** — only the interest portion of your home loan instalment, not the capital repayment
- –**Municipal rates and taxes**
- –**Electricity and water**
- –**Home contents insurance** (proportioned)
- –**Repairs specifically to the office** — not general household maintenance, which is not proportioned
- –**Wear and tear on office equipment** — computers, furniture, and other equipment used for work are deducted in full under the wear and tear provisions, not proportioned
Not deductible:
- –The capital portion of your bond repayment
- –Domestic worker costs (unless exclusively for office cleaning, which is unusual)
- –Food and refreshments
- –Home improvements (these affect the base cost for CGT purposes, not the annual deduction)
An Example
Assume a property with a total floor area of 120m², a dedicated home office of 15m², and the following annual costs:
| Expense | Annual Amount | |---|---| | Bond interest | R72,000 | | Municipal rates | R14,400 | | Electricity | R18,000 | | Home insurance | R9,600 | | Total | R114,000 |
Proportional rate: 15 ÷ 120 = 12.5%
Deductible home office portion: 12.5% × R114,000 = R14,250
For a taxpayer in the 36% marginal bracket, this reduces their tax liability by approximately R5,130. Modest — but straightforward and recurring.
The Capital Gains Tax Trap for Homeowners
This is the part most people miss. If you own your home and claim a home office deduction, SARS will apportion your primary residence exclusion when you sell.
South African taxpayers can exclude the first R2 million of a capital gain on their primary residence from CGT. However, if a portion of the home was used for business purposes, that portion does not qualify for the exclusion. The apportionment is calculated over the full period of ownership — so even a few years of claiming a home office deduction can reduce your exclusion on a property held for many years.
Example: If 12.5% of your home was used as a home office for 5 of the 15 years you owned it, approximately 4.17% (12.5% × 5/15) of the gain on sale falls outside the primary residence exclusion and is subject to CGT.
For homeowners in areas with strong property appreciation — Johannesburg northern suburbs, Pretoria East, coastal Cape Town — this is worth modelling before you decide whether to claim. For some taxpayers, the annual income tax saving is smaller than the future CGT exposure. For others, the arithmetic favours claiming. There is no universal answer.
The CGT exposure does not apply to tenants, since they do not own the property and have no primary residence exclusion to protect.
What SARS Wants to See on Audit
If SARS selects your return for verification, you will typically be asked to provide:
- –A floor plan or sketch of the home showing all rooms and their approximate dimensions
- –Photographs of the dedicated office space
- –Your employment contract (if an employee) confirming the work-from-home requirement
- –Rental agreement or bond statements
- –Municipal rates accounts
- –Utility bills covering the period claimed
Keep this documentation for the full period you make the claim and for five years after the return is filed.
References & Further Reading
- –[SARS: Home Office Expenses](https://www.sars.gov.za/individuals/tax-during-assessments/home-office-expenses/) — Official SARS guidance on who qualifies and how to calculate the deduction
- –[SARS: Income Tax Act — Section 23](https://www.sars.gov.za/legal-counsel/legislation/acts/income-tax-act/) — The legislative basis for allowable and non-allowable deductions
- –[SARS: Capital Gains Tax Guide](https://www.sars.gov.za/types-of-tax/capital-gains-tax/) — How the primary residence exclusion interacts with home office claims
*This article is for general information only. The interaction between home office deductions and CGT on your primary residence depends on your specific circumstances. Consult a [registered tax practitioner](/contact) before making or amending a claim.*
