Clan maintenance is periodic fee which is payed off every 15 days by clan leader or by its deputy. It depends on the amount of slots for members in clan.
Unit of measurement for clan maintenance is reporting period. Its duration is 15 days, first reporting period starts at the day of clan creation. First reporting period - as a gift the type of maintenance - VIP.
Every next reporting period while paying you can choose type of maintenance.
There are two of them - VIP and Standard.
Access to paying next period will appear in 5 days before the end of current period.
VIP has dynamic price and depends on the amount of places in the clan. VIP lets clan members use strengthen versions of clan researches. They can also change clan bonus at any moment.
Standard has dynamic price and depends on the amount of places in the clan. It gives access to standard version of clan researches, but you can choose bonus type only once - while paying the maintenance.
The service price is paid for each slot in the clan (even if slot is empty): 150 * 3 = 450 gold for a level 1 clan with 3 places, 150 * 5 = 750 gold for a level 2 clan with 5 places, etc.
If you miss paying for maintenance, clan bonus as well as clan mechanics - rating, the add of rating in the competitions and so on (except the clan fee) are blocked. However, the clan stays in the game as well as distinctive marks/inscriptions near players’ nicknames.
If the maintenance isn’t paid during 2 months, the clan is dismissed. In case of dismiss, clan disappears from the game, from all the ratings. Ex clan members receive status “a player without clan”.