Sometimes things happen or business happens and things change. As they change, you may discover you’re tied to certain relationships, i.e. agreements, you have no way out other than after their full term. As such, with your situation changing, you discover you no longer benefit from the agreement in your business or more over your business doesn’t benefit from it. 

With agreements that are just there to fill them and from which your business gains nothing out of but just loss, i.e. expense, you should account for the loss straight away in your accounts – both on the income statement as current period’s expense and balance sheet as a liability. For an example if you have to make monthly payments for 3 more months in the sum of 1,000 each month, your expense for the current period is 3,000, your liability is 3,000 and each month you debit the liability account, taking 1,000 away from the balance alongside with crediting your cash account for the same amount reflecting that you paid it to your supplier.

As soon as you learn you will be making losses from an agreement, that is they don’t contribute anything towards your business any longer, you account for the total expense (also future periods) straight away.