Русско-англо-русский юридический словарь

public expenditures. The money that is spent by the government on public services and/or other types of government related entities. (BusinessDictionary)

government expenditure (also public expenditure) – the amount a government spends in a particular period:

Government expenditures helped to preserve large areas of natural land.

massive cuts in government expenditure (Cambridge Business English Dictionary )

The noun expenditure can be countable or uncountable.

In more general, commonly used, contexts, the plural form will also be expenditure.

However, in more specific contexts, the plural form can also be expenditures e.g. in reference to various types of expenditures or a collection of expenditures. (WordHippo)