Due Dates

All due dates assume that the date falls on a business day. If the due date falls on a holiday or weekend, the due date will be the next business day.

Key Dates in May 2026

MondayTuesdayWednesdayThursdayFridaySaturdaySunday
April 27, 2026
April 28, 2026
April 29, 2026
April 30, 2026(2 events)

12:00 am: Employers


April 30, 2026

Employers – Social Security, Medicare, and withheld income tax. File form 941 for the first quarter of current year. Deposit any undeposited tax. (If your tax liability is less than $2,500, you can pay it in full with a timely filed return.) If you deposited the tax for the quarter in full and on time, you have until May 10 to file the return.

12:00 am: Employers


April 30, 2026

Employers – Federal Unemployment Tax. Deposit the tax owed through March if more than $500.

May 1, 2026
May 2, 2026
May 3, 2026
May 4, 2026
May 5, 2026
May 6, 2026
May 7, 2026
May 8, 2026
May 9, 2026
May 10, 2026(2 events)

Employees who work for tips

May 10, 2026

Employees who work for tips – If you received $20 or more in tips during the previous month, report them to your employer. You can use Form 4070 Employee’s Report of Tips to Employer.

12:00 am: Employers


May 10, 2026

Employers – File Form 941 for the first quarter. This due date applies only if you deposited the tax for the quarter in full and on time.

May 11, 2026
May 12, 2026
May 13, 2026
May 14, 2026
May 15, 2026(3 events)

12:00 am: Employers


May 15, 2026

Employers – Nonpayroll Withholding. If the monthly deposit rule applies, deposit the tax for payments in April.

12:00 am: Exempt Organizations


May 15, 2026

Exempt Organizations – File a previous calendar year return (Form 990). If you want an automatic 6 month extension to file the return, file Form 8868. Then file Form 990 by November 15.

May 16, 2026
May 17, 2026
May 18, 2026
May 19, 2026
May 20, 2026
May 21, 2026
May 22, 2026
May 23, 2026
May 24, 2026
May 25, 2026
May 26, 2026
May 27, 2026
May 28, 2026
May 29, 2026
May 30, 2026
May 31, 2026