Both ethics function on a secular society - Kant because humans having moral responsibility and Bentham because he focuses on hedonism rather than religion
Similarities
Both ethics support the aims for democracy - Kant because of the universability of the Kingdom of Ends and Bentham becase he focuses on greatestgood for the greatestnumber
Similarities
Both have similar context, moral philosophers working for the good of society and both theories support good for humans above all else.
Differences
Teleological vs deontological - Bentham's is teleological, whilst Kant's is deontological
Differences
Kant holds a belief in the existence of God and angels whilst Bentham does not.
Differences
Bentham aims for pleasure whilst Kant aims for reason
Differences
In Bentham's ethics there are no moral absolutes, but in Kant's ethics there are some actions always considered wrong.
Differences
Bentham uses the Hedonic Calculus whilst Kant uses the categorical Imperatives