Mercantile Discount Bank () is a major commercial bank in Israel and is a subsidiary of Israel Discount Bank. It is the sixth-largest bank in Israel.
On 12 February 2020, the United Nations published a database of companies doing business related in the West Bank, including East Jerusalem, as well as in the occupied Golan Heights. Mercantile Discount Bank was listed on the database on account of its activities in Israeli settlements in these occupied territories, which are considered illegal under international law.
In 2021, MDB and its parent company IDB reached a settlement of âª343 million (A$137 million) with the Australian Taxation Office after allegedly conspiring with the Sydney-based Binetter family to engage in tax fraud.