Extra payment that's good in France and America (5)
I believe the answer is:
bonus
'extra payment' is the definition.
(I've seen this before)
'good in france and america' is the wordplay.
'good in france' becomes 'bon' (French for 'good').
'and' means one lot of letters go next to another.
'america' becomes 'us' (abbreviation for the United States).
'bon'+'us'='BONUS'
'that's' is the link.
(Other definitions for bonus that I've seen before include "Additional payment as reward for service" , "Extra payment, may be performance-related" , "Something more than you expected" , "Good-performance payment" , "Extra dividend" .)