A typical year, banking bonus regularly (4)
I believe the answer is:
your
'a typical' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'year banking bonus regularly' is the wordplay.
'year' becomes 'yr' (abbreviation).
'banking' means one lot of letters goes inside another.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternating letters of 'bonus' are 'ou'.
'yr' going around 'ou' is 'YOUR'.
Can you help me to learn more?
(Other definitions for your that I've seen before include "solvers?" , "Thy" , "-- Honour; -- Majesty" , "See 14" , "See 5" .)