ZARONIA Rate Today: Overnight Fixing & History
The South African Rand Overnight Index Average (ZARONIA), published by the South African Reserve Bank — today’s fixing, the day-over-day move, and the daily history.
ZAR · O/N · ZARONIA
52-wk range
6.59% – 7.11%
Last update:
ZARONIA Fixing Chart (1 Year)
The ZARONIA fixing is 6.85800%, as of , unchanged on the previous publication day.
| Date | ZARONIA fixing |
|---|---|
| 29 Jul 2026 | 6.85800% |
| 28 Jul 2026 | 6.85800% |
| 27 Jul 2026 | 6.85600% |
| 24 Jul 2026 | 6.86400% |
| 23 Jul 2026 | 6.85600% |
| 22 Jul 2026 | 6.85500% |
| 21 Jul 2026 | 6.85400% |
| 20 Jul 2026 | 6.85400% |
| 17 Jul 2026 | 6.86100% |
| 16 Jul 2026 | 6.85300% |
| 15 Jul 2026 | 6.85300% |
| 14 Jul 2026 | 6.85200% |
| 13 Jul 2026 | 6.85100% |
| 10 Jul 2026 | 6.86100% |
| 09 Jul 2026 | 6.85400% |
ZARONIA is administered and published by the South African Reserve Bank on the business day after the transactions it reflects. ZARONIA replaces JIBAR, which ceases publication after December 2026.
Beyond today's print
See where ZARONIA is heading
- Market-implied ZARONIA forward path
- Full daily fixing history
- Excel Add-in & API access
- Price swaps, caps & get MtM
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“I do debt service forecasting for any of the facilities where we have floating rate exposure… I like this option to just pull the forward curve monthly or quarterly going out.”
That's today's fixing. See where it's heading.
Today's fixing tells you what overnight ZAR costs now. Forward rates imply the path of future fixings: what the market expects ZARONIA to be at each future date, straight from today's swap pricing.
See the ZARONIA forward curveThe fixing prices one night. A swap prices years of them.
A swap rate is every future ZARONIA fixing, compounded and quoted as one fixed number per tenor. Before a desk quotes you theirs, check it against an independent ZAR mid — the difference is their margin.
Daily ZARONIA fixings in Excel & API
If you're rebuilding this table in a spreadsheet every month-end, you don't need a rate, you need a feed. One function, official fixings, straight into your accrual model.
// Excel: any day's ZARONIA fixing in a cell =BlueGamma.FIXING("ZARONIA", accrual_date) # API: the same rate, one GET away GET api.bluegamma.io/v1/fixing ?index=ZARONIA&valuation_date=YYYY-MM-DD x-api-key: your_api_key
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FAQs
The latest ZARONIA fixing, with its publication date and day-over-day change, is shown at the top of the table above. ZARONIA is published by the South African Reserve Bank each Johannesburg business day at around 10:00 South African time, for the previous business day.
The South African Reserve Bank administers ZARONIA, publishing it each Johannesburg business day at around 10:00 South African time, for the previous business day, based on overnight unsecured rand deposit transactions.
No. The ZARONIA fixing is a single overnight rate. Compounded ZARONIA accrues those daily fixings over an interest period (1, 3, 6 or 12 months). For period rates, see our daily compounded ZARONIA page.
The BlueGamma Excel Add-in and API serve ZARONIA fixings for any date, plus the full history — the same feed behind this page. A 14-day trial includes both.
Related ZARONIA resources
Compounded ZARONIA rates
Daily 1M, 3M, 6M and 12M compounded ZARONIA, calculated in arrears from these fixings.
ZARONIA forward curve
The market-implied path of future ZARONIA fixings, from live GBP swap pricing.
ZAR swap rates
Live ZARONIA swap rates across tenors from 1 to 30 years.