Expenses: $1500
Children: none yet, but subsidized child care, paternity leave and other subsidies makes it pretty cheap
Food: $500
Housing: $400 (own apartment with my SO)
Student loans: $150
Car payment: no car, bike most places
Income tax rate: 32%, but employer pays another 30%, so effectively 62%
Sales tax: 25%
Insurace: $15
Phone: $15 (cheapest possible plan)
Internet: included in housing
Note: I also lived in the US before, with simliar savings rate, which was even easier.