What if I run out of money?

If you run out of money and cannot afford to pay the upkeep fee for your mercenary they will "go on strike" and suspend themselves. That could be rather nasty if it happens in the middle of a fight so it is a good idea to make sure you always have enough money on you.

Because an active mercenary requires an upkeep fee every 15 minutes you may want to suspend your mercenary whenever you don't need their services for a long period of time. You may also set a mecenary to Passive and they will waive their upkeep fee anytime they have spent the entire last 15 minute period on Passive. Using Passive mode is nice if you like to rest in the Guild Lobby collecting free buff spells (you mercenary will get them too).

Going AFK and forgetting to suspend or set to passive can waste large amounts of money. Be careful.