Please recommend TAX Account for International income tax return

[dragon_hero]

I am currenty a resident of Canada. But I might go to work outside canada for many year. I have bank interest, mutual funds, real estate, etc. I am wondering if I should cut off all the ties to Canada for Tax advantage or just hold them and file tax every year (the latter one sounds too troublesome to me).
If you know any expert about such an issue, please let me know. Thanks very much!