How do you guys manage cashflow from a banking perspective?

[Steven Barr]

There's all these formulas for calculating expenses and backing in to cashflow, right? How do you guys manage this operationally? 

In reality, rent will hit your bank account, but it doesn't separate itself into specific categories. Do you shuffle your estimated capex and opex to a separate savings account? Or do you just let it all sit in one checking account, and then only take a small portion of it as a distribution if you want cashflow?