@May09Bump
If your reinvesting in your company at start up stage and taking minimal salary and dividends, then you need savings enough to live on (if independent).
Not necessarily. You can live on credit cards and/or loans for a short time. It's what I did when I gave up work to have DS and DH started his own business at the same time.
We got a couple of interest free credit cards, both with a few thousand credit limit, and put as much as we could on them, including all shopping, fuel, car repair bills, clothes, toys, pram, cot, etc. He used his last pay cheque to buy a computer and printer to run the business. We'd actively seek out shops that took credit cards and swerve the ones that didn't because we literally didn't have the cash to buy things from cash only shops. Same with tradesmen - pretty hard back then to find, say a plumber who'd accept credit cards! This was 20 years ago, when there were still lots of shops and other businesses that didn't take cards!
He took on several clients to do cheap/basic work just to fill his days and bring in enough money to pay the mortgage and utilities. Any excess stayed in the business to buy software, pay for advertising/marketing, save up for a laptop so he could work at clients' premises, etc. As the months went by, the investment meant he got better clients, more lucrative work, etc.
All the while, we were getting closer to the credit limits on the credit cards. In the end, it worked out, his business was generating a decent enough "profit" to start paying him a proper wage, which we used to clear down the credit cards before interest started.
All that was without savings - it was living from hand to mouth, getting stressed at the growing credit card statements, getting stressed when a client didn't pay his bill on time (needed to pay the mortgage that month), etc.