Customer Service Number (CSN)
The Customer Service Number (CSN) is used to access your ReadyReturn online. You only need a CSN if you are eligible and have a ReadyReturn ready.
We issue a new CSN each calendar year. The number is only valid during the year for which it is issued.
You will need the following to get your CSN:
- Your social security number.
- A copy of your original 2012 California tax return.
- The California Adjusted Gross Income (AGI) from your 2012 tax return. (Use the chart below to find the line numbers.)
|Form Number||Line Numbers|
|Form 540 2EZ||Line 16|
|Form 540||Line 17|
|Form 540NR (Long)||Line 32|
|Form 540NR (Short)||Line 32|
- A compatible browser and operating system. We recommend that you log out and close your browser when you are done to ensure the highest level of security.