A Mudaraba investment account rests on a contract in which the customer, as capital provider, entrusts money to the bank as manager; profits are shared by an agreed percentage and financial losses fall on the customer unless the bank was at fault.
Rabb al-mal and mudarib: two roles with unequal rights
The holder is the rabb al-mal: they provide the money but take no part in management. The bank is the mudarib: it decides how funds are used, contributes work and expertise, and normally commits none of its own capital under this contract.
Why profit is set as a percentage and never as an amount
Jurists require each party to receive a fraction of actual profit, for instance 70 to 30. Promising a lump sum or a percentage of capital would turn the contract into an interest-bearing loan, which is riba, and would void the Mudaraba.
Loss, borne by the capital provider
When investments lose money, the holder's capital shrinks accordingly. The bank loses only the value of its unpaid effort. This asymmetric split is the logical counterpart of having no guarantee on the amount placed in the account.
Misconduct, negligence or breach of terms: when the bank becomes liable
The mudarib is a trustee. If it commits wilful misconduct, gross negligence or departs from the agreed conditions, it must compensate the holder. Proving such failings, however, remains difficult for an individual saver acting alone against an institution.
Unrestricted versus restricted Mudaraba
The general form lets the mudarib invest freely in any permissible sector. The restricted form limits duration, location, sector or type of transaction. The more precise the conditions, the easier it becomes to show a breach that makes the bank liable.
May the mudarib also invest its own money?
Yes, if the contract allows it. The bank then becomes a partner as well: its stake earns profit pro rata, after which it takes its management share on the remainder. This mixing must be disclosed because it directly affects the holder's return.
Malaysia's split between Islamic deposits and investment accounts
In Malaysia, the Islamic Financial Services Act 2013 separated Islamic deposits, whose principal is guaranteed, from loss-sharing investment accounts. Banks were given a two-year transition to reclassify their products and inform customers of the change.
Deposit protection: Mudaraba accounts are generally outside it
Because principal is not promised, deposit insurance schemes generally exclude these accounts, Malaysia's included. The holder therefore accepts a risk closer to that of a fund, which is why detailed pre-contract disclosure matters so much.
Third-party guarantees, allowed under conditions
Under AAOIFI standards the mudarib cannot guarantee capital, but an independent third party may do so voluntarily and separately. Such a guarantee must not be tied to the contract and must cost the holder nothing at all.
Early closure and the value returned
Withdrawing before maturity amounts to liquidating a stake. Banks often apply a reduced weighting for the elapsed period or repay capital at its estimated value, without any penalty resembling interest. These terms must be set out in writing.
Comparing it with Wakala and Musharaka
In an investment Wakala the bank acts as agent for a fixed fee and targets an expected profit. In a Musharaka both parties contribute capital and manage jointly. Mudaraba is the only one where labour and money are fully separated.
Before subscribing: the questions that matter
Ask for the exact ratio, reserve policy, financed portfolio, costs charged to the pool and the situations in which the bank accepts liability. Finally, check that the Sharia board publishes an annual report on actual compliance with the contract.
Specialist external source
The Securities Commission Malaysia portal gathers Islamic capital market guidelines and resolutions of its Shariah Advisory Council, including those dealing with Mudaraba structures.