There are numerous sources of external funding, for example, from charitable sources, local government, and Welsh Government grants being used to fund youth work.
Defnyddir sawl ffynhonnell o gyllid allanol, er enghraifft, o ffynonellau elusennol, llywodraeth leol a grantiau Llywodraeth Cymru i gyllido gwaith ieuenctid.