Is there a website where we can check that?mutual collection agreements
Not that I know of but here is the New Zealand treaty. Convention between Canada and New Zealand for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion With Respect to Taxes on Income - Canada.caIs there a website where we can check that?
What if they file taxes but just don't pay them, meaning the taxes due keep cumulating interest on them forever.If you leave it like that and you come back to Canada after some time you will have problems for tax evasion. According to Section 238 of the income tax act, failing to file your tax return can result in a fine of $1,000 – $25,000 and up to one year in prison.
If you have property, it will likely be confiscated, bank accounts frozen, etc.THEY always find a way to get their "due" back.
The only way is to own nothing more in Canada and leave for good, decide for yourself if it's worth it.
linkWhat if they file taxes but just don't pay them, meaning the taxes due keep cumulating interest on them forever.