Transparency: all transactions made on the blockchain will be recorded on a single ledger and can consulted by anyone conected to the network.
Security: the decentralized network makes it more secure because you can not modify anything on the network without collapsing the whole net. This kind of networks are harder to hack due to not being on a single server.
Improved traceability: every transaction is recorded digitaly on an only ledger so tracking the historical of transactions is easier thant hard-paper copies.
Increase efficiency and speed: as we can check the transactions easily we amount of time spent on balancing or auditing is highly reduced.
Reduced cost: related with the last two benefits, if we can check easily the transactions we do not need middlemen or third party auditors for doing financial checks.