The amount used as medical expenses in the previous year can be found in the last year's tax file and can be accessed very easily because Turbotax keeps a record of tax files for seven years so that customers can access it anytime.

To download a PDF of the previous year's tax file please see our TurboTax FAQ with a video below: -

Where do I find a copy of my filed return in TurboTax Online? (TurboTax) 

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