The 50/50 vs 60/40 Question: How Mudarabah Profit Splits Work at SA Banks (2026)

Two South African banks tell you exactly how they divide deposit pool profits, and the numbers are not flattering to one of them. Standard Bank states a 50/50 split between bank and depositors on its Shari'ah Fixed Deposit. FNB states 60/40 in its own favour on its Islamic Term Deposit. Absa and Al Baraka publish no headline ratio, disclosing indicative rates and realised rates respectively instead. Before you conclude that Standard Bank pays more, though, you need to understand what the split actually determines, because the ratio is only one gear in the machine.

The machine, step by step

A Mudarabah deposit works like this. Your money joins a pool with other depositors' money. The bank, acting as Mudarib (manager), deploys the pool into its Shariah-compliant financing book: Murabaha cost-plus sales, Ijarah leases, Musharaka partnerships. Each period, the pool's realised profit is measured. The stated split then divides that profit between the bank (its management share) and the depositor side. Finally, the depositor side is allocated among individual depositors, usually by a weighting system that rewards larger balances and longer commitments. Your return therefore depends on three variables: how well the asset book performed, what split the bank takes, and what weighting your particular deposit carries. The split is the middle gear, not the whole gearbox.

What the four banks actually disclose

• Standard Bank: stated 50/50 split, profit calculated on average daily balance, payout monthly to at-maturity. The most depositor-favourable stated ratio in the market. Indicative per-term rates published; no realised history.
• FNB: stated 60/40 bank/depositor split, plus the only published weighting table in the market (from 44 at 30 days to 73 at 60 months), plus an explicit clause that losses fall on depositors up to capital absent negligence. The least favourable ratio, the best documentation.
• Absa: no headline ratio in marketing; the compare pages describe profit shared at pre-agreed ratios set out in product terms. What Absa publishes instead is the biggest indicative rate suite in the market, up to 10.70% on term products.
• Al Baraka: a profit distribution model rather than one marketed ratio, with the output published as realised monthly rates for every product (5.228% for the 365-day Participation tier in June 2026). The bank also operates a disclosed Profit Equalisation Fund that smooths distributions across months.

Why 50/50 does not automatically beat 60/40

Run the arithmetic. A pool earning 20% gross where the bank takes half delivers 10% to depositors. A pool earning 30% gross where the bank takes 60% delivers 12%. The asset engine matters more than the split. FNB's Islamic window deploys into one of the largest compliant asset books in the country, including its vehicle Ijarah and property Musharaka portfolios; Standard Bank's personal Islamic franchise is smaller and more treasury-weighted. Neither publishes realised pool performance, so you cannot actually complete this comparison from public data, which is itself the most important finding: the two banks that disclose their splits do not disclose their outcomes, and the one bank that discloses outcomes (Al Baraka) does not market a split.

The questions that actually extract the answer

• What did this specific product distribute, annualised, in each of the last three months? Every bank running a genuine pool knows this number.
• Is the rate I am being quoted a ceiling ('up to'), a current indicative rate, or a realised historical rate?
• What weighting does my term and balance carry, and how far below the headline does that put me?
• Under what circumstances would I receive less than the indicative rate, and has that happened in the last two years?
• Does a Profit Equalisation Fund or similar smoothing mechanism apply, and who owns the balance in it?

A banker who cannot answer these is selling you a brochure. All four providers here can answer them; making them do so is how you turn disclosure differences into a fair comparison.

A worked example of why the ratio misleads

Imagine two pools in the same month. Pool A earns 8% on its assets and passes depositors 50%, so your side sees 4%. Pool B earns 12% and passes 60% to the bank, leaving depositors 40%, which is 4.8%. The bank with the worse-looking split paid you more, because the asset book did more work. That is the whole argument in two sentences: the split is one factor of two, and the one banks advertise is the one that flatters them least often. It is also why Al Baraka's published realised rate, which collapses both factors into a single verifiable number, is worth more to a comparison shopper than any ratio disclosure in the market.

The fiqh footnote that matters

Nothing about a 60/40 split is religiously deficient. Classical Mudarabah requires the ratio to be agreed upfront as a share of profit (never a guaranteed amount), and it permits any ratio the parties accept. The Mudarib's share compensates real management work and risk-bearing infrastructure. What the tradition does demand is honesty about the loss side: if the pool loses money without bank negligence, depositors bear it. FNB's terms state this explicitly, which deserves respect rather than alarm; it is the signature of an authentic contract. The compliance question and the value question are separate. Both deserve answers before you sign, and the same logic applies to CODI cover, which no split-based deposit carries.

Bottom line: use stated splits as a tiebreaker, not a headline. Rank providers first on whether you can verify outcomes (Al Baraka), then on documentation depth (FNB), then on stated ratio (Standard Bank), then on indicative ceilings (Absa), and cross-check all four in our fixed deposit comparison and the Halal Money Index.