Counsel fees is another, less-than-common variant. The only form to avoid at all costs is attorneys fees, in which the first word is a genitive adjective with the apostrophe wrongly omitted. BRYAN GARNER, GARNER'S DICTIONARY OF LEGAL USAGE 94 (3d ed. 2011).
The average contingency rate falls between 20-40%, with most lawyers charging around 33% to 35% of the total amount recovered in a case. The exact percentage can vary depending on the complexity of the case, the lawyer's experience, and the stage at which the case is resolved.
It provides: “Use the singular possessive case 'attorney's fees' (not 'attorneys'') in the term 'attorney's fees,' even though in the particular case more than one attorney may be involved.” OFF. OF THE REP. OF DECISIONS, THE SUPREME COURT'S STYLE GUIDE § 10.3 (Jack Metzler ed., 2016).