For a first time offender, there's a $20 fine. For multiple-time offenders it's a higher fine. In addition, we offer many alternative ways of voting. We have postal voting open for >2 months before the election and are due a week after election. In addition, voting booths are open for several weeks before the election to allow for early voters. Identity verification is pretty lax, so you don't need to carry your passport everywhere. And "donkey" or null voting are well-known techniques for abstaining from a vote. And if you're in another state and don't have a postal ballot, you can vote at another state's voting booth.

All of this results in a >95% voter turnout. Which I think is pretty damn good.

In Australia it's only a $20 fine (approx US$15) for not voting.