situation: was on employer disability for all of 2016 so low income but have very high medical expenses that far exceed my total income for 2016 beginning  jan 01,2016 to Dec 31, 2016. at this time I only need to claim one of these expenses incurred in april 2016(an out of province medical procedure for close to $10,000/also have major mileage as well as hotel expenses that should be claimed as well but these again exceed the amount I need to claim which is the medical procedure above) to get back all income tax paid for 2016.  will also have about $5000 to $6000 new medical expenses beginning jan 01, 2017 to dec 31, 2017. problem: want to claim all medical expenses (with exception of the one in april i mention above as am claiming it now so all others i have prior to that and after that april,2016 one) that began in jan 01,2016 through to dec 31, 2016 plus the mileage and hotel as well as the 2017 medical expenses I will incur from jan 01,2017 to dec 31,2017 on next year's income tax (  expect to be back at work and will need to claim all medical expenses  not claimed from  jan 01 to dec 31, 2016  and from jan 01 ,2017 to dec 31, 2017 as well as the mileage (over 3000kms) plus the hotel costs from the april 2016 medical expense.  what do I chose this year on my income tax form as the claim period to be able to do this?. again I am only claiming the one large medical expense from april 2016 which is all I need to get back all income tax paid for 2016 but will still have medical expenses as well as the april medical expense mileage and hotel that started jan 01, 2016 to dec 31,2016 left over to carry forward to 2017 ( and know that I will also have $5000 to $6000 new medical expenses beginning jan 01, 2017 to dec 31, 2017 to claim in addition for  next year's income tax )/do i just chose from jan 01, 2016 to dec 31,2016 and keep all the 2016 not claimed receipts including those from before april procedure which i am claiming on this year's tax form and carry them forward to 2017 form  or what do i do to still be able to claim all on next year's taxes?