No Claim Bonus (NCB) is a discount or savings on premium offered to a bike owner by motor insurance companies if they have not made any claims during their bike insurance policy tenure. It is a reward offered by the motor insurer to the policyholder for not raising a single claim during the policy tenure. The NCB is calculated based on the total claim-free years in the policy, and the applicable no claim bonus rate is applied to claim a premium discount in the policy. The NCB is usually offered starting from the second year of the policy tenure and increases with each claim-free year.