The IRS has extended tax deadlines until February 3, 2025, for certain taxpayers in New York and Connecticut due to severe storms and flooding. This extension applies to various federal tax returns and payments originally due between August 18, 2024, and the new deadline. Meanwhile, self-employed individuals must meet a September 16 deadline for third-quarter estimated tax payments based on income earned from June to August. Mark Steber from Jackson Hewitt emphasized that failing to pay on time could lead to penalties and interest charges. The IRS encourages all taxpayers, especially those with variable income, to conduct a tax checkup to adjust withholdings and avoid unexpected tax bills next year. Additionally, those in disaster-affected areas may have different deadlines and should consult IRS resources for guidance.