In order to claim the medical expenses from the 2017 T4 slip on your 2018 income tax return under medical expenses, you will need to file an adjustment request for the 2017 return to adjust the reporting period for your medical expenses. Medical expenses must be claimed within a 12 month period with the final month ending in the tax year that you are filing. For example, you can claim June 2016 to June 2017 on your 2017 income tax return. Please see the following FAQ for instructions on how to file an adjustment request.
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