self-assessment
noun
/ˌselfəˈsesmənt/ ukus [ U ] TAX
a system for people to calculate for themselves how much income tax to pay:
New guidelines are being published for self-assessment this tax year.
Make sure that you have submitted your self-assessment tax return by 31 January.
[ C or U ] HR, WORKPLACE
a judgment made by an employee about their own work, abilities, etc., or the process of doing this:
Despite these achievements, she was humble in her self-assessment.
Managers are regularly asked to carry out self-assessment exercises.