Tax on Side Income South Africa — How It Works When You Have a Job and a Business
You have a salary. You also earn money from a side hustle — selling products, freelancing, renting out a room. Most people assume their PAYE covers everything. It doesn't. Here is exactly how tax works when you have both.
Your employer's PAYE only covers your salary. Side income is your responsibility. If you earn more than R30,000/year from your side business and don't register for provisional tax, SARS will charge penalties and interest — often discovered years later during a tax audit.
The golden rule: SARS taxes total income
SARS does not tax your salary and side business separately. They combine everything into one taxable income figure and apply the tax brackets to the total. This matters because it can push you into a higher tax bracket.
Business expenses reduce your taxable profit
You don't pay tax on your total revenue — you pay tax on your profit (revenue minus allowable expenses). This is where most side hustlers leave money on the table by not claiming everything they're entitled to.
You cannot deduct: Personal expenses, meals and entertainment (unless for clients with a legitimate business purpose), fines or penalties, capital expenses in full (must be depreciated). Always keep receipts — SARS can audit you for 5 years.
Equipment: wear and tear deductions
Large equipment is not deducted all at once — it is spread over its useful life. This is called a wear and tear (depreciation) deduction. SARS publishes a table of asset lifespans.
Items under R7,000 can usually be deducted fully in the year of purchase. For your leather business, most hand tools and small equipment likely qualify for immediate deduction.
Does reinvesting profit avoid tax?
This is one of the most common misconceptions. The short answer is: not directly. Here is the truth:
If you reinvest profit by buying more leather, tools, or equipment — those are business expenses that reduce your taxable profit. You pay tax on less money. This is the correct and legal way to reduce your tax bill.
If you earn R180,000 profit but only draw R30,000 as a salary and leave R150,000 sitting in your business bank account, SARS still taxes the full R180,000 profit. Keeping money in a bank account is not a deductible expense.
As a sole proprietor, you do not pay yourself a salary — you simply draw money from the business. Your taxable income is your profit, regardless of how much you draw. (A Pty Ltd works differently — the company can pay you a salary which is a company expense, but you then pay personal income tax on that salary.)
The provisional tax you need to pay
Because your side income is not taxed through PAYE, you must pay provisional tax twice a year. See our full guide: Provisional Tax — What It Is and How to Pay It
Worked example: leather side business + engineering salary
Let's use the exact scenario from the Reddit question: engineer earning R45,000/month salary who starts making R15,000/month profit from a leather business.
This is an estimate. Your actual figure depends on exact income, all business expenses, pension contributions, medical aid credits, and exact PAYE deducted. Use a tax practitioner for accuracy.
Frequently asked questions
Key contacts
Register provisional tax: efiling.sars.gov.za
Find a tax practitioner: sars.gov.za/practitioner-lookup
This guide provides general information only. Tax rules, bank fees, and regulations change — always verify with SARS, your bank, or a registered tax practitioner. Mzansi Money Guide is independent.