This is Where My Money's Going ...

EXCLUSIVE

Nas is spilling the tea -- financial tea, anyway -- to let Kelis know how he spends his riches.

The rapper filed legal docs, obtained by TMZ, which show he makes about $175k per month from various sources (music, investments, etc.) and he has more than $8.3 million in cash in the bank. Nas lists his monthly expenses at $76,834.04 and that includes $20,245.70 that goes to helping various family members, including his father.

The rapper also reveals he pays $15k per month in rent.

Nas disclosed his financial info because he and Kelis are at war over child support. She says $8k per month ain't cutting it anymore.