I think these are two separate issues.
The deficit happens because a large "donation" to the Society is included as an expense for the assembly. Thus, though they may have met the actual expenses, a deficit is announced when they haven't also met the amount of this "donation."
Then possibly because they are no longer meeting the budgeted expenses, they now seem to be levying a per publisher fee, pressuring local elders to make a resolution to cover the amount for their congregation. I believe it's about $10 per publisher, give or take.