Billionaire mining magnate Andrew Forrest will pour millions of dollars into the 'Own the Force' campaign if the Perth-based franchise survives the axe.

RugbyWA and the ARU begin arbitration in Sydney on Monday, with the fate of the Western Force hanging in the balance.

Andrew Forrest will match the money raised for "Own the Force" campaign. Credit:AAP

If the ARU win the arbitration hearing, they will axe the Force from the Super Rugby competition.

If the Force win, the ARU will have no other choice but to try to axe the Melbourne Rebels, or negotiate a merger between two Australian franchises.