"On its 2013 tax forms, the most recent available, the foundation claimed it spent $30 million on payroll and employee benefits; $8.7 million in rent and office expenses; $9.2 million on “conferences, conventions and meetings”; $8 million on fundraising; and nearly $8.5 million on travel. None of the Clintons is on the payroll, but they do enjoy first-class flights paid for by the foundation.

In all, the group reported $84.6 million in “functional expenses” on its 2013 tax return and had more than $64 million left over..." [1]

[1] https://nypost.com/2015/04/26/charity-watchdog-clinton-found...

So of $140M raised tax-free in 2013, half was spent keeping the operation going that very year.