May 10: First-quarter payroll tax filings (Form 941) are due for timely filers. Employees who earned $20+ in tips in April must report them to employers. May 15: Payroll tax and nonpayroll withholding deposits for April are due.

Taxpayers who filed an extension for their 2023 tax return have until October 15, 2024, to submit their return. However, an extension does not extend the time to pay. Any unpaid taxes after April 15 accrue penalties and interest. The IRS advises those unable to pay in full to pay what they can and set up an installment plan. Failure-to-file penalties are 10 times higher than failure-to-pay penalties. IRS Payment Portal: IRS Payments.

The IRS has reminded taxpayers that the deadline to claim 2020 tax refunds is May 17, 2024. Unclaimed refunds occur when taxpayers do not file returns due to missed paperwork, incorrect addresses, or other issues. If unclaimed by the deadline, refunds become the property of the U.S. Treasury. Those eligible for the Earned Income Tax Credit (EITC) or Recovery Rebate Credit should file as soon as possible.