Understanding California Quarterly Estimated Tax Payments
https://www.roberthalltaxes.com/blog/news/understanding-california-quarterly-estimated-tax-payments/
California quarterly estimated tax payments are due on the following dates: April 15: First Quarter Payment June 15: Second Quarter Payment September 15: Third Quarter Payment January 15 of the following year: Fourth Quarter Payment
April 15: First Quarter Payment
June 15: Second Quarter Payment
September 15: Third Quarter Payment
January 15 of the following year: Fourth Quarter Payment
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