https://ttlc.intuit.com/community/taxes/discussion/when-do-i-need-to-pay-tax-on-capital-gain-from-ho...
California differs from federal. To avoid a penalty, you must pay on or before the below dates.
Payment Amount Due date
1 30% April 15, 2021
2 40% June 15, 2021
3 0% September 15, 2021
4 30% January 18, 2022
