Mi casa es su Capocasa.

The Spanish phrase is mi casa es su casa, my house is your house.

Capocasa is my surname. It is Italian: capo, head or chief, and casa, house. Head of the house. The two languages share the word casa, which is the only reason the joke works at all.

oca is not the head of your house. You are. oca is the one who keeps the books, notices that dining ran hot in March, and tells you the July statements reconciled clean.

I built this because I was running my own money out of a spreadsheet that got more fragile every month, and I wanted the actual statements to be the source of truth instead of my memory of them.

Mi casa es su Capocasa. Come in, the books are open.