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Home Office Deduction Calculator

Home Office Deduction Calculator

To calculate your home office tax deduction in South Africa: divide your dedicated office area by your total home area to get the floor area ratio.

Uses SARS 2026/2027 rates, checked 29 July 2026.

Home Office Deduction Calculator

Only self-employed people, and employees who earn more than half their pay from commission, can usually claim.

Enter `0` if you are a salaried employee with no commission component.

Use only the interest portion of your bond repayment, not the full instalment

Enter only the portion used for work — this is claimed in full (not area-based)

Optional: Estimate Your Tax Saving

Used to estimate your marginal tax saving from the deduction

Worked out on this device. Nothing you type is sent to us unless you email the results.

How to calculate your home office tax deduction in South Africa

How it's worked out

Calculate your allowable home office tax deduction in South Africa using the SARS floor area ratio method. For self-employed, sole traders and commission earners.

Multiply this ratio by your household expenses (rent or bond interest, electricity, rates, repairs). For example, if your office is 12m² in a 120m² home (10% ratio), and your monthly expenses total R15,000, your monthly deduction is R1,500 (R18,000 annually). You must have a room used regularly and exclusively for work.

Home Office Deduction = (Office m² ÷ Total Home m²) × Household Expenses

Legislative note: this calculator applies the proportional apportionment method commonly aligned with Section 23(h) guidance for mixed-use expenditure, together with SARS home-office eligibility tests.

Check Your Eligibility

Self-Employed

You qualify if you have a dedicated office used regularly and exclusively for work.

Commission Earner

Employees earning more than 50% of income from commission may claim home office deductions.

Salaried Employee

Salaried employees earning less than 50% from commission generally cannot claim. Your employer must not provide an office.

Home Office Deduction Frequently Asked Questions

Common questions about claiming home office expenses from SARS

Next step

Add up a year of rent, electricity and rates from your bank statements.

Important Disclaimer

Accounter does not provide accounting, tax, business or legal advice. This calculator has been provided for information purposes only. You should consult your own professional advisors for advice directly relating to your business.