Confidential by defaultEstablished 201072 Jurisdictions

Islamic Window

An Islamic window is a Sharia-compliant business run inside a conventional financial institution — a division, branch network or product line — usually with segregated funds, accounts and Sharia governance.

Also called: Islamic banking window · Islamic window operation · Sharia window

Windows let a conventional bank serve customers who want Islamic products without setting up a separate subsidiary. Regulators that permit them typically require the Islamic business to keep its funds separate from the conventional book, to keep its own accounts, and to have its own Sharia Supervisory Board or committee.

Attitudes differ sharply between jurisdictions. Some regulators have encouraged windows as a route into Islamic banking; others have restricted them or required banks to move the business into a separately capitalised entity. Qatar's central bank ordered conventional banks to close their Islamic windows in 2011.

In practice

A window is only as compliant as its segregation. If Islamic deposits can fund conventional lending, or costs and income are not properly separated, the window carries significant Sharia non-compliance risk.

Commonly confused with

TermHow it differs
Islamic bankAn Islamic bank is a separately licensed institution whose whole business is Sharia-compliant. A window is one part of a conventional institution.

See also

Go deeper

← All glossary terms

Page Last Updated: 01/Oct/2026