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[Sharp]

heh, just a lil hint which some may consider cheating, others may call it...... good book-keeping.

Simply transfer all engineers/scienists to other bases just before the end of the month. They are in transit during the month change, they are not yet at any of your bases so do not count up to your base(s) monthly costs.

This can be done with soldiers (and skyrangers/interceptors i think) but they are best kept as you never know when you might need them.

This is probably the best way to keep you in the green.