If you stay in Singapore, then you should pay Singapore
tax......because you are a resident/ reside in Singapore, so your
income will be taxed by Singapore. If you work overseas and getting
paid overseas, but you go there for a while only, meaning you don't
reside there for more than certain number of days in a year, then
the tax of that income will still go to Singapore.
This should be explained in the tax treaty.
Btw...... from what you describe, you should know that you can pay
no tax at all. Cash in a box?
What business are you in?
Nothing illegal I hope.
