When people first see their UIF estimate, the most common reaction is “why is it so much less than my salary?” The answer is the Income Replacement Rate (IRR) — the percentage of your income UIF actually pays. Understanding it removes the nasty surprise and helps you plan realistically.
The IRR is the slice of your daily income that UIF replaces. It is not a flat number — it slides between 38% and 60% depending on what you earned, and crucially, lower earners get a higher percentage. This is deliberate: the system protects the most vulnerable workers more.
The formula is progressive. Plug in a small daily income and it returns a rate near 60%. Plug in a daily income at the R17,712 ceiling and it returns exactly 38%. So a low earner might get 60% of their income replaced, while a high earner gets 38% — and anything above the ceiling is ignored entirely.
| Monthly salary | Approx. IRR | Approx. monthly benefit |
|---|---|---|
| R3,500 | ~50% | ~R1,740 |
| R6,000 | ~46% | ~R2,750 |
| R10,000 | ~42% | ~R4,200 |
| R15,000 | ~39% | ~R5,860 |
| R17,712+ (ceiling) | 38% | ~R6,730 |
These are illustrative; your own figure also depends on your credit days. See the full method in how UIF is calculated or estimate yours on the calculator.
Because benefits are calculated on a maximum salary of R17,712, even someone earning R40,000 is treated as earning R17,712 for UIF. That is why high earners feel the biggest gap between their salary and their UIF — and why the maximum monthly benefit is around R6,730.
Plan for UIF to replace roughly a third to two-thirds of your income, not all of it, and only for as long as your credit days last. It is a bridge, not a salary. Knowing the IRR up front means no shocks when the first payment lands.
It is the percentage of your daily income that UIF pays, on a sliding scale from 38% to 60%. Lower earners receive a higher percentage; the rate falls to 38% at the R17,712 ceiling.
Because UIF only replaces 38% to 60% of your income, and earnings above R17,712 are ignored. It is designed as short-term relief, not full income replacement.
IRR = 29.2 + 7173.92 divided by (232.92 + your daily income), then limited to between 38% and 60%.
Around R6,730, because benefits are capped at the R17,712 ceiling and the lowest replacement rate is 38%.
General information and estimate-based explanation, not financial or legal advice. Confirm with the Department of Employment and Labour or SARS.