"some difference in house: you can claim tax deduction for the interest from the house you are living and it is not the case here;while you can claim tax deduction for the interest from an investment house and it is not the case in US. house price here is much higher than US."
You may need to pay property tax for your house for living in US but not in Australia."
"you may need to pay more for medication as it is co-pay in US"
You don't have to pay if you select public hospital treatment as public patient. Of course you can select private treatment with the gap payment.
"similar for primary & high school"
If you are a 'tiger' mother, in Sydney you may choose "Opportunity class" in primary school and selective high schoold for your kid. It's public education and free but the best.
