Monthly Bookkeeping Packages as low as $250/month ~ First month is free!

Critical Tax Deadlines for Businesses: January 2026

Welcome to the start of a new year, and with it, key tax dates loom for businesses, employers, farmers, and fishermen. Timely preparation can ensure that you stay compliant and avoid penalties.

January 15 - Due Date for Employers' Monthly Deposits

Employers adhering to the monthly deposit schedule must deposit Social Security, Medicare, and withheld income taxes for December 2025 by January 15. This date also serves as the deadline for nonpayroll withholding deposits for the previous month. Remember, employment tax deposits must be made electronically unless your deposit liability is under $2,500 for a return period, in which case quarterly or annual remittance with the return is permitted.

January 15 - Farmers and Fishermen Estimated Tax Payment

If you're a farmer or fisherman, make sure to pay your estimated tax for 2025 by January 15 using Form 1040-ES. While the deadline to file your tax return for 2025 (Form 1040 or 1040-SR) is April 15, should you miss the estimated payment, you must file your return and pay the tax due by March 2, 2026, to avoid any estimated tax penalties.

Consideration for Weekends and Holidays

It’s important to note that if a tax deadline falls on a Saturday, Sunday, or a legal holiday, the deadline is automatically pushed to the next business day that isn’t a holiday.

Disaster Area Filing Extensions

Special extensions apply to those in designated disaster areas, allowing for adjusted due dates. To verify if your area qualifies and to find out respective filing extensions, please visit the following:
FEMA: FEMA Disaster Declarations
IRS: IRS Tax Relief in Disaster Situations

Share this article...

Want our best tax and bookkeeping tips and insights delivered to your inbox?

Sign up for our newsletter.

I confirm this is a service inquiry and not an advertising message or solicitation. By clicking “Submit”, I acknowledge and agree to the creation of an account and to the and .

Social Media

Location

649 N. Lewis Road, Suite 100-43
Limerick, PA 19468
Hours: By Appointment Only