Pay your California extension (Form 3519)

An extension gives you more time to file, not more time to pay. Interest and penalties still run from the original deadline on anything unpaid.

1. Go to FTB Web Pay (Opens in a new tab)
2. Select USE WEB PAY PERSONAL
3. Put in your SSN and last name
4. Enter name and address information
5. Choose Extension Payment (Form 3519)
6. Choose TAX YEAR 2025, the payment amount, and the date you want
   • Note: only mark “Is this a joint tax payment?” as yes if you are married
7. Click CONTINUE
8. Enter payment information
9. Finalize
10. Save a copy of the confirmation for your records