Wiktionary
fixed charge
n. (context finance English) an unvarying charge such as rent or property tax.
WordNet
fixed charge
n. a periodic charge that does not vary with business volume (as insurance or rent or mortgage payments etc.) [syn: fixed cost, fixed costs]
Usage examples of "fixed charge".
It is a fixed charge, and you pay it cheerfully, you pay it without a murmur.
When you came to pay the servants, how would you like it if each of the men and maids had a fixed charge?