Gyda chynllun Cymorth i Brynu – Cymru, sy'n un o gynlluniau Llywodraeth Cymru, a buddsoddiad gan y sector preifat, bydd y £440 miliwn yn mwy na dyblu dros y pum mlynedd nesaf. Nod y Banc Datblygu yw cael effaith a fydd yn werth dros £1 biliwn ar economi Cymru. Yn sgil hynny, digwylir iddo roi cymorth i 1,400 o fusnesau, a bydd y busnesau hynny'n creu ac yn diogelu dros 20,000 o swyddi.
With the Welsh Government’s  Help to Buy – Wales scheme and private sector investment the £440m more than doubles and over the next five years, the Development Bank is targeted to have an impact of over £1bn on the Welsh Economy. As a result, it is expected to support 1,400 businesses with those businesses creating and safeguarding more than 20,000 jobs.