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In Canada, can a limited corporation be used as an income tax shelter?
This scheme doesn't work, because the combination of corporation tax, even the lower CCPC tax, plus the personal income tax doesn't give you a tax advantage, not on any realistic income I've ever worked it out on anyway.  Prior to the 2014 tax year on lower incomes you could scrape a bit of an advantage but the 2013 budget changed the calculation for the tax credit on non-eligible dividends so there shouldn't be an advantage anymore. Moreover if you were to do it this way, by paying corporation tax instead of CPP you aren't eligible for CPP. If you sit with a calculator for long enough you may figure out a way of saving $200 or something small but it's a lot of paperwork for little if any benefit and you wouldn't get CPP. I understand the money multiplier effect described above, but the tax system is designed in a way that it makes more sense to take it as salary and put it in a tax deferred saving account, i.e. an RRSP - so there's no limit on the multiplier effect. Like I said, sit with a calculator - if you're earning a really large amount and are still under the small business limit it may make more sense to use a CCPC, but that is the case regardless of using it as a tax shelter because if you're earning a lot you're probably running a business of some size. The main benefit I think is that if you use a CCPC you can carry forward your losses, but you have to be aware of the definition of an "allowable business investment loss".