I also don't understand the tax reference. Yes, there are taxes on company income. There are not taxes on money sitting in the bank from the previous year. This is no different than a job.
If I earn $50k this year the gov takes say $20k and I have $30k left over. If I do absolutely nothing the next year the government doesn't take money from that $30k.
Similarly if I run a company and have gross income of $100k and expenses of $50k leaving $50k the in the bank the gov will take a percentage. The next year the gov will only tax NEW INCOME.
At least that's my understanding. I'm not a tax expert nor a lawyer and I can only go from my experience in California. Other places might be different.