TurboTax help article: https://turbotax.intuit.com/tax-tips/self-employment-taxes/a-guide-to-paying-quarterly-taxes/L6p8C53...
For tax year 2023, the following payment dates apply for avoiding penalties:
| 1st Quarterly Estimated Tax Payment | April 18, 2023 |
| 2nd Quarterly Estimated Tax Payment | June 15, 2023 |
| 3rd Quarterly Estimated Tax Payment | September 15, 2023 |
| 4th Quarterly Estimated Tax Payment | January 15, 2024 |
