There is much misunderstanding on the salaries an allowances of the Liberian Lawmakers. The only open, accessible source is the National Budget. In the National Budget 2015/2016 section 101 is dedicated to the National Legislature (page 3-13). In this section you will find the budgets for salaries and allowances that are allocated for the members of the House and the Senate.
In a separate document IREDD listed the salaries and allowances, based on the National Budget.
IREDD likes to underline that any accountability or transparency if, and how these allowances are spent, and by whom, is not available.