1. You not longer can do that, unless you book it as a loan your yourself, there is no equity drawing in an S-corporation. You can take periodic distributions, but be careful, all shareholders must be paid the same and if a distribution drives your shareholder value below zero it will be subject to income tax.
2. An income tax payment is a personal thing, it does not belong in the business books. An S-corp is a pass through entity and does not pay corporate taxes to the IRS
3. Estimated income tax payments are also a personal thing and should not be in the business books
4. Money you use for the business that is personal, is a loan to the business, and must be paid back.