October 10: Employees who received $20 or more in tips during September must report them to employers. October 15: Nonpayroll withholding and payroll tax deposits due for September payments. Corporations and individuals who requested a 6-month extension must file their 2023 tax returns and pay any remaining balance. October 31: Employers must file Form 941 for the third quarter of 2024 and deposit any unpaid payroll taxes.

The October 15 deadline applies to taxpayers who requested a 6-month extension to file their 2023 tax return. The IRS encourages filers to submit their returns as soon as possible to avoid penalties. If you are owed a refund, filing sooner means receiving your money faster. If you owe taxes, remember that the extension only applies to filing the return—not to paying taxes owed. Interest charges accrue daily on unpaid balances after the April deadline. If you cannot pay in full, you should still file promptly to minimize penalties. Disaster Tax Relief Eligibility: IRS Disaster Relief.

Many Americans face large unexpected tax bills in the spring due to insufficient planning. A late summer or early fall tax checkup can help avoid IRS penalties. Key questions to ask include: Did you take on a seasonal job? Earn freelance or gig income? Receive other untaxed income, such as interest or dividends? Sell valuable assets like stocks or cryptocurrency? Experience a filing status change (e.g., marriage)? If any of these apply, your tax withholding may not be enough. Use the IRS Withholding Estimator to check if adjustments are needed. IRS Withholding Estimator: Check Your Withholding.