Specific pages within the California Franchise Tax Board site:
- 2014 Tax Calculator
If you know your approximate Taxable Income enter it and your Filing Status to get your approximate Tax Liability.
- FTB FAQ
By Topic. Very extensive.
- View Payments & Balance Due
After getting your Customer Service Number (CSN) you can view your estimated tax payments, check recent payments applied to a balance due, as well as your current balance due, and a summary of each balance due year. Very handy indeed.