for the 100th time. Giving up citizenship requires the departure tax. End of story
Renouncing your Canadian Citizenship is not required to leave Canada, it may be a requirement of some countries to gain their citizenship -- an any event, renouncing citizenship is not the trigger for tax, the trigger is becoming a
non-resident of Canada for tax purposes.
The Departure Tax itself is not specifically a tax, it's simply what they call the trigger for Capital Gains taxes that become due or calculated at the time of your departure. It's not an additional or incremental tax, Rev Can wants to be sure you pay your taxes before you depart (difficult to collect once you are gone). There is generally no Capital Gain on your personal possessions (furniture, heavy equipment, cars, powertoys, planes -- these are typically depreciating assets which would not be subject to Capital Gains.) unless they are appreciating assets valued above $10K (car/MC/Gun/Stamp collections, gold and silver, expensive artworks etc.)
When you become a non resident, the CRA requires certain assets to be disposed of on or before the day you leave. If you dispose (sell) your property before hand, just report the capital gain as usual. If you keep the assets, it triggers a deemed disposition (meaning you sold the property at fair market value and then immediately bought it back, any capital gain is recorded at that moment and taxes are due on that gain.
For the average Joe this isn't a big deal, equity in - real estate, businesses, RRSPs, life insurance, and pensions are exempt from deemed disposition so the tax on these is deferred till the time of real disposition -- no different than if you stayed in Canada. They are still deemed disposed at your departure as the value of those assets needs to be set for future tax calculation purposes.
The killer is equities - stocks and bonds. If you have a gain on these investments, the gain becomes immediately taxable on the day you leave, these taxes are not deferred. Again, not an incremental tax, just a trigger to pay the tax on your gains so RevCan can get their taste.
What does this all mean? Not a whole lot to most people. If you have a ****-ton of capital gains in stocks and bonds, you will have to cough up cash and settle with the taxman. Other than that your tax treatment with respect to 'Departure Tax' will mean nothing to you as payment is deferred interest free until you would normally trigger capital gains taxes -- the day you sell.