Put an end to tax on children (6)
I believe the answer is:
scotch
'put an end' is the definition.
(I've seen this before)
'tax on children' is the wordplay.
'tax' becomes 'scot' (I've seen this before).
'on' says to put letters next to each other.
'children' becomes 'ch' (genealogical abbreviation).
'scot'+'ch'='SCOTCH'
'to' is the link.
(Other definitions for scotch that I've seen before include "Whisky (not whiskey!)" , "providing nursery facility in school" , "Decisively put an end to" , "Kind of whisky spelt thus" , "dish" .)