thank you everyone for your comments/inputs
So if we summarize the family planned budget:
48K housing (4000 per month in D19, sounds right?)
36K education, after school for 2 young children
14K food (1200 per month)
11K tax
8K travel (no home flights covered by my company)
7K Misc.
6K utilities (500 per month)
2K transport (200 per month)
132K Total
optional
maid: 8K
So are 140K sounds OK? (we have no debts, have a fairly good amount of savings and health insurance is covered for the family)
How old are your kids? 36k might not be enough for some international schools, kid I know in an international school pays something like 24k a year. Not including all the holiday programmes and all that rubbish.
1200 per month for food for four person = 300 per person per month. Once again, how old are your kids? If you are looking to cook one-two meals daily, then it is doable, but it will be only a very tight budget.
Otherwise, budget at least 500 per adult, and at that amount, you would be eating cheaply, with all your meals from fast food outlets and small stalls, you won't be eating at restaurants or the likes. 2k/mth at least for all four of you is more realistic, and even at 2k, it is quite budget eating.
Four people should not use 500 in utilities bills, the bills should cost only 300-400...yeah maybe 500 is a good ballpark. Air-con is the killer here.
200 for transport for all four person is too little. Again it depends on whether your kids walk to school, and whether you can walk to work etc. A comfortable figure would be 400-500 if you take public transport all the time. For public transport plus the occasional cab, 700-800.
Ach, nein! Frankly, if I were you, I would just look for cheaper housing, is is the housing that is killing your budget here. Or send your kids to local schools, they cost only a few hundred dollars per year compare to 20k plus at international schools.
Something has to give.