The Baillieu Government will next week decide whether to dump the $1.35 billion troubled myki ticketing system.

Regardless of its fate, the much maligned myki will end up costing taxpayers even more.

Premier Ted Baillieu told Radio 3AW the Government was weighing up whether it would cost more to keep myki and try and fix it or abandon it.

Myki travel card scanners. Credit:John Woudstra

''We have to work out whether we dump it altogether, whether we modify it or whether we keep it,'' he said.

''Whichever way we go there's going to be a significant cost to that,'' he said.