Can I use my passport until the day it expires?
Not necessarily. Some countries won’t let you enter unless your passport is valid for six months after you plan to leave that country. Some airlines also impose this rule on their own initiative. It can apply even if you’re just transiting or stopping over. Some foreign governments and airlines apply the rule inconsistently. Travellers can receive conflicting advice from different sources. Getting it wrong can mean being stranded.
The Australian Government does not set these rules. Check your passport’s expiry date before you travel, and if you’re not sure it will be valid for long enough, consider getting a new passport.
Can I use foreign visas from an old passport?
Many countries don’t accept visas that are in passports which are no longer valid. You may have to get new visas. Keep in mind that some visas are electronic, and there may be no physical evidence of them in your passport.
If you're planning to travel to the United States of America under the visa waiver program, you need to have a passport with an electronic chip. All current Australian passports, except emergency passports, have an electronic chip.