What sets kakeibo apart, however, is that it doesn’t involve any budgeting software, apps or Excel sheets. Similar to bullet journaling, it emphasizes the importance of physically writing things down — as a meditative way to process and observe your spending habits.
A personal budgeting method that is kept by hand? What we believe in.
The linked article explains the “why’s” behind the system but not so much the “how’s”. This one does a fairly good job of that.