Jeremy, aged 35 and Emily, aged 40, are common law spouses and have 3 children, Jack, Maddie, and Grace. They are reviewing their life insurance coverage with Mark, a local life insurance agent, to ensure they have adequate coverage. Currently, Jeremy and Emily both have term life insurance in the amount of $200,000. Jeremy recently inherited a family cottage valued at $400,000 (ACB of $200,000), which him and Emily hope to pass on to their children one day. Mark informs Jeremy & Emily of the potential tax liability of passing the cottage to their children and advises them that they should consider purchasing additional life insurance.

How much life insurance should they purchase to cover the future tax liability of the children taking into account a tax rate of 50%?