

Early teams run company money through a founder. It works until it does not. The treasury gives the entity its own accounts, each with a balance, a history and a purpose.
Day-to-day money. Pay vendors and members from the entity. Recurring payroll runs on a schedule you set.
Money set aside. Moving it needs the signers the constitution names, so it stays where you put it.
Money with a purpose attached. Receive a grant into its own treasury and show the funder exactly where it went.
A payment above the limit collects the approvals the constitution requires before it moves. Every movement posts with who approved it. Members read the ledger in the dashboard. Counterparties see what you make public. When a round closes, the funds land in the treasury you chose.

Form your entity and open a treasury in the same sitting.