Domestic charge paid in advance (8)
I believe the answer is:
retainer
I believe this is a triple definition!
'domestic' is the first definition.
(a retainer is a term for a domestic servant)
'charge' is the second definition.
(retainer is a kind of charge)
'paid in advance' is the third definition.
'retainer' can be an answer for 'advance' (advanced payment). I am not certain of the 'paid in' bit.
Can you help me to learn more?
(Other definitions for retainer that I've seen before include "Fee paid to book professional services" , "Fee could be the answer" , "Long-standing family servant" , "Eritrean (anag)" , "reduced rent" .)