Besides income tax, employment insurance premiums, pension premiums (and the latter two are only if you are working in Canada) and the various consumer taxes (see the section entitled “Tax”), the only other tax you might need to pay is Property Tax. Property tax is only paid when you buy a home in BC rather than rent. Renters pay no property tax or anything of the kind. The amount of tax you pay is determined by the value of your property, which is assessed by BC Assessment (for further information about BC Assessment please visit: http://www.bcassessment.bc.ca/Pages/default.aspx). If you do buy a home in Vancouver, and it is your primary residence, you may be eligible to receive the Homeowners Grant from the City of Vancouver (for further information please visit: http://vancouver.ca/fs/treasury/hog.htm) if you are either a landed immigrant (permanent resident) or a Canadian citizen (and obviously most expats will not be either, at least for a while).
City of Vancouver Property Tax — http://vancouver.ca/fs/treasury/index.htm
City of Vancouver Property Tax FAQ — http://vancouver.ca/fs/treasury/faq.htm