In December 2012, after powerful typhoon Bopha brought destruction across the Philippines, JW.ORG isued this statement:
"All of the relief efforts are being funded by donations from Jehovah’s Witnesses in the local area as well as the larger international community of Witnesses. The Governing Body of Jehovah’s Witnesses helps to care for such expenses by utilizing funds donated to the Witnesses’ worldwide work."
Other than the hype reports you can read in the mags later on, particulars are never divulged by the WBTS.