Tax Deadlines Calendar
Never miss an important tax deadline for California, Texas, or Federal filings
2026 Tax Calendar
January 15, 2026
Fourth Quarter 2025 Estimated Tax Payment
Applies to self-employed individuals and those with income not subject to withholding. Payment covers income earned from September 1 through December 31, 2025.
February 2, 2026
W-2 & 1099 Information Return Deadlines
Employers must furnish Form W-2 to employees and file Copy A with the SSA (along with Form W-3). Form 1099-NEC for nonemployee compensation is due to both recipients and the IRS. Form 1099-MISC is due to recipients by this date (IRS paper filing deadline: February 28; electronic: March 31). Normal deadline is January 31, but moves to February 2 in 2026 because January 31 falls on a Saturday.
March 16, 2026
S-Corp, Partnership & Multi-Member LLC Tax Returns
Form 1120-S (S-Corps) and Form 1065 (Partnerships and multi-member LLCs) must be filed for the 2025 tax year. Multi-member LLCs taxed as partnerships file Form 1065 and issue Schedule K-1s to each member. Six-month extension available by filing Form 7004, extending the deadline to September 15, 2026.
April 15, 2026
Individual Income Tax Returns & First Quarter 2026 Estimated Tax
Form 1040 deadline for 2025 tax year for most taxpayers. Also due: First quarter 2026 estimated tax payment and IRA contributions for 2025 tax year. Extension requests (Form 4868) must be filed by this date.
April 15, 2026
C-Corporation Tax Returns
Form 1120 due for calendar-year C-Corporations for the 2025 tax year. A six-month extension is available by filing Form 7004, extending the deadline to October 15, 2026. Estimated tax payments are still required quarterly regardless of extension.
April 15, 2026
Trust & Estate Income Tax Returns
Form 1041 due for calendar-year trusts and estates for the 2025 tax year. Includes irrevocable trusts, estates of decedents, and grantor trusts that became irrevocable upon the grantor's death. Schedule K-1s must be issued to beneficiaries. A 5½-month extension is available by filing Form 7004, extending the deadline to September 30, 2026.
June 15, 2026
Second Quarter 2026 Estimated Tax Payment
Payment covers income earned from April 1 through May 31, 2026. Self-employed individuals and those with non-withheld income must pay using Form 1040-ES.
September 15, 2026
Third Quarter 2026 Estimated Tax Payment
Payment covers income earned from June 1 through August 31, 2026. Required for those with significant non-wage income. Review year-to-date income and adjust payment if necessary.
September 15, 2026
Extended S-Corp, Partnership & Multi-Member LLC Returns
Final deadline for filing 2025 Form 1120-S (S-Corps), Form 1065 (Partnerships and multi-member LLCs) if a six-month extension was filed by March 16, 2026. Schedule K-1s must also be issued to partners, members, and shareholders by this date.
September 30, 2026
Extended Trust & Estate Tax Return Deadline
Final deadline for filing 2025 Form 1041 if a 5½-month extension was filed by April 15, 2026. Schedule K-1s for beneficiaries must also be issued by this date. No further extensions are available beyond this date.
October 15, 2026
Extended Individual & C-Corporation Tax Return Deadline
Final deadline for filing 2025 Form 1040 (individuals) and Form 1120 (C-Corporations) if an extension was filed by April 15, 2026. No further extensions available beyond this date.
January 15, 2027
Fourth Quarter 2026 Estimated Tax Payment
Payment covers income earned from September 1 through December 31, 2026. Final estimated tax payment for the 2026 tax year.