What's the plural form of fee-splitting? Here's the word you're looking for.
Answer
The noun fee-splitting can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be fee-splitting.
However, in more specific contexts, the plural form can also be fee-splittings e.g. in reference to various types of fee-splittings
or a collection of fee-splittings.