Co-participation is an amount that the insurance company does not pay for any damage (it pays the damage minus the co-participation). So - if the co-participation is 10,000, - and the damage is lower, the insurance company will not pay anything. If the damage is 100,000,, the insurance company pays 90,000. Usually, however, the co-participation is still agreed as a percentage - for example: CZK 10,000 or 1% (whichever is higher). Thus, in the case of damage, for example, 20,000,000, - the amount of the co-participation will not be 10,000, -, but 200,000, - (just 1%). ;-)