Is it the cardholder's responsibility to dispute transactions made after losing a card?

The cardholder is indeed responsible for disputing transactions that occur after the loss of their government purchase card. This responsibility is crucial to ensuring the integrity of the government purchase card program and protecting against unauthorized use. When a card is reported lost, the cardholder must promptly communicate this to the issuing bank and follow up on any unauthorized transactions that occur after the card has been reported lost.

This process helps in tracking and potentially recovering funds for any fraudulent activity. It is vital for cardholders to be vigilant, as failure to dispute such charges in a timely manner could lead to financial liability on their part. The expectation is that cardholders take ownership of their accounts and report any unauthorized activity as soon as it is noticed, affirming the security measures necessary in handling government funds.