top-up
noun [ C, usually singular ]
FINANCE UK uk/ˈtɒpʌp/ us/ˈtɑːp-/extra money that is added to an amount so that the total is increased:
The company has offered a top-up to all those who have paid into their pension scheme for more than 10 years.
The government top-up comes at the end of the process, forcing people to save money in order to get the cash reward.
top-up
adjective [ before noun ]
FINANCE UK uk/ˈtɒpʌp/ us/ˈtɑːp-/used to describe extra money that is added to an amount so that the total is increased:
Many universities charge their students top-up tuition fees.