What is the fare to get to a 1A station using an MBTA interzone pass?|172961

If I have a 1-7 interzone pass coming from Haverhill and need to get off at Malden (zone 1A), what do I pay? Is it just the fare from zone 1 to zone 1A?

_Interzone fares and passes are NOT valid for travel to or from North Station, South Station, Back Bay Station and other Zone 1A stations._. Uh-huh.. If I_m reading the website correctly (if can be a big word) an additional four bucks each way, on top of your pass. It_s as clear as mud!