You'd be surprised how much Honey Boo Boo's big sis rakes in in a month.

Lauryn "Pumpkin" Efird's surprising income is revealed in new child support court documents -- she's currently going through a divorce from her estranged husband, Josh Efird.

According to In Touch, Pumpkin and her estranged husband each make $20,000 a month.

It's not clear what jobs the two hold to bring in this kind of cash -- a combined $40K -- so perhaps they're wanting to keep their honey hole a secret.

It's been a fairly amicable divorce, with each of the Efirds praising the other's parenting at different points. They are sharing custody and not paying child support to one another.

Legal documents tied to the divorce show that the couple do have a custody agreement in place, with details pertaining to visitation, child support and how to split their property and debt.

"Due to the joint custodial relationship between the parties, there shall be no award of child support. The parties shall equally divide the expenses of the minor children, including but not limited to, uncovered medical expenses, extracurricular activities and necessary school expenses," the agreement reads (via Yahoo!).

The reality couple have four children together: Ella, born in 2017, Bentley, born in 2021, and twins Sylus and Stella, born in 2022.

It seems to be a pretty chill split compared to most reality TV breakups.