The cancellation fee, should you wish to end the annual subscription prematurely, is the difference between the monthly and the annual subscription multiplied by the number of months into the term of the subscription.
For example: if a customer began a term in January for a Tas annual subscription and wished to cancel in May, the cancellation fee would be the difference between the monthly and annual subscription for the elapsed term. In this case, 5 months elapsed x $28 per month = $140 cancellation fee.