i3BAR is a structured best practice approach for spreadsheets.  It uses a few simple formula in combination with a different approach to tackling problems and requires no additional software, add-ins or licences.  

Using it leads to structured, flexible and reliable models. It is used by practitioners worldwide to reduce the time needed to carry out routine reporting from hours and days down to minutes. 

More efficient reporting allows you to leave the office on time. Being more productive at work means you get to be there for the important people and events that matter in your life.