Banking/ATM Services at Paris de Gaulle CDG Airport

HSBC Bank has bank branches and ATM cash machines at de Gaulle Airport:

A full-service HSBC bank branch is between Terminald 2D-2F, at the TGV station's shopping area; open weekdays only;  tel : +33 (0) 1 48 62 33 99 / fax : +33 (0) 1 48 16 53 83.

ATM cash machines
of HSBC Bank are disbursed throughout the terminals.

Currency Exchange at Paris de Gaulle CDG Airport

Travelex Foreign Currency Exchanges at de Gaulle Airport also handle VAT refund, international money transfers, cell phone cards, and more.  business hours differ slightly between locations.
At T1: on Arrivals level; at pre-security of Departures; after passport control, Arrivals; and & at pre-security of Arrivals
At T2A:
at pre-security, door 5; & beyond passport control
At T2C:
at pre-security, departures, near door 5; and  beyond passport control at departures, near boarding gates.
At T2D:
at pre-security, near door 6
At T2E:
beyond passport control, departures, boarding lounge entrance and at S3 central level 'La Galerie Parisienne'; at pre-security at departures, and pre-security at arrivals between TE & 2F.
At T2F:
at pre-security arrivals near door 11;  beyond passport control 2F1 Schengen area; bond passport control, pre-security departures.
At T3:
at bonded area, departures.