Kim Zolciak‘s making ends meet thanks to her adult daughters … because Ariana Biermann just revealed she’s helping pay her mother’s expenses.

Ariana opened up about her mom’s financial situation Sunday on ‘Watch What Happens Live’ … telling Andy Cohen her mom asks for money to pay bills for her and her kids.

The good news for Ariana’s bank account … Kim pays her back when she can.

Ariana says she’s not the only piggy bank in her family … telling Andy her mother also borrows money from her sister Brielle Biermann.

Kim and Kroy Biermann‘s financial woes have been well documented in this space during their nasty divorce … but Ariana says money should never ruin a relationship with family and her mom will be her best friend forever, no matter what.