2026 Tax Due Dates | CPA Compliance Checklist
Tax Due Dates Calendar
Stop Stressing About Deadlines.
We offer a complete Tax Planning and Compliance service tailored for Texas businesses. Don't just track deadlines—let a CPA ensure compliance.
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Our Expert Tax Services (CPA-Led Solutions)
The CPA Pain Point We Solve
Your biggest financial risk isn't the tax bill—it's the calendar. Missing an estimated tax deadline, botching a Franchise Tax filing, or miscalculating multi-state sales tax can lead to severe penalties, audits, and costly interest. You became an entrepreneur to lead your business, not to memorize the IRS calendar.
Our Solution: We take ownership of the deadlines. Our CPA-led team ensures compliance across all federal, state, and local obligations (from Form 1040 to Texas Sales Tax), turning your calendar anxiety into a clear strategic advantage.
Texas Sales Tax Guide 2026: Due Dates, Rates & Registration
E-commerce Sales Tax Automation. Avalara Partner. We manage monthly/quarterly Texas sales tax filings and leverage automation for multi-state compliance (critical for e-commerce/retailers).
Estimated Taxes (Form 1040-ES)
Proactive Estimated Tax Planning.
We calculate your quarterly payments (Q1, Q2, Q3, Q4) accurately to avoid penalties. Critical for sole proprietors and rental property owners.
Property Tax Payment/Protest
Houston/Texas Property Tax Consulting. Assistance with payment deadlines and strategic support for property valuation protests in Waller, Fort Bend, and Harris counties.
Payroll Tax (FUTA Form 940)
Employer Payroll Compliance. We ensure accurate and timely filing of federal payroll tax (Form 940) and state/local reports, keeping your business compliant with all employer obligations.
Partnership / S-Corp (Forms 1065 / 1120S)
Accurate Pass-Through Filing. We manage partnership (1065) and S-Corp (1120S) returns, including K-1 preparation, ensuring clean compliance and maximum tax efficiency for owners.
Foreign-Owned Entities (Form 1120-F, 5472)
Foreign-Owned U.S. Business Compliance. Expertise in reporting for foreign-owned U.S. corporations (Form 1120-F) and 25% foreign-owned LLCs (Form 5472), ensuring global compliance to avoid severe penalties.
Frequently Asked Questions – 2026 Tax Due Dates & Compliance
The Texas Franchise Tax Report is generally due May 15 each year. If May 15 falls on a weekend or state holiday, the deadline usually moves to the next business day. Filing late or failing to file can result in penalties and interest from the Texas Comptroller.
For most calendar-year taxpayers, estimated tax payments are typically due:
April 15, 2026
June 15, 2026
September 15, 2026
January 15, 2027
These payments help avoid IRS underpayment penalties. Due dates may shift if they fall on a weekend or holiday.
Texas sales and use tax returns are generally due on the 20th of the month following the reporting period for monthly filers. Filing frequency (monthly, quarterly, or annual) depends on the business’s sales volume and assignment by the Texas Comptroller.
W-2 and 1099-NEC forms are typically due by January 31 of the year following payment. This deadline applies both to providing forms to recipients and filing them with the appropriate federal and state agencies.
For calendar-year entities:
Original due date: March 15, 2026
Extended due date: September 15, 2026
Timely filing is important to avoid penalties and ensure K-1s are issued to owners on time.
Individual income tax returns are generally due April 15, 2026. If an extension is filed, the extended deadline is typically October 15, 2026. An extension provides more time to file, not more time to pay—any tax owed should be paid by the original due date.
Yes. If a tax deadline falls on a weekend or federal/state holiday, the due date usually moves to the next business day. Always confirm deadlines using IRS and Texas Comptroller guidance.
Not always. Due dates can vary based on filing status, business structure, industry, and state-specific rules. Taxpayers should confirm which deadlines apply to their specific situation.
| Date | Requirement/Task | Form/Procedure | Frequency | Applies To | Details |
| Jan 15, 2026 | 4th Quarter Estimated Tax Payment | Form 1040-ES | Quarterly | Sole Proprietors, Rental Property Owners | Estimated Taxes |
| Jan 20, 2026 | Texas Sales Tax (December) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | Sales Tax |
| Jan 31, 2026 | W-2 and 1099-NEC Filing (for 2025) | Form W-2, Form 1099-NEC | Annual | All Businesses | Business Tax |
| Jan 31, 2026 | FUTA Tax Filing (Form 940 for 2025) | Form 940 | Annual | Employers | Personal Tax |
| Jan 31, 2026 | Property Tax Payment Deadline | Property Tax Statement | Annual | Property Owners (Waller, Fort Bend, Harris) | |
| Feb 1, 2026 | Deadline to Protest Property Valuation for January Bills | Protest Form (County Specific) | Annual | Property Owners | |
| Feb 15, 2026 | 1st Quarter Estimated Tax Payment | Form 1040-ES | Quarterly | Sole Proprietors, Rental Property Owners | Estimated Taxes |
| Feb 20, 2026 | Texas Sales Tax (January) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | Sales Tax |
| Mar 15, 2026 | Partnership/S-Corp Tax Returns (Form 1065, 1120S) | Form 1065, Form 1120S | Annual | Partnerships, S-Corps | Business Tax |
| Mar 20, 2026 | Texas Sales Tax (February) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | Personal Tax |
| Apr 1, 2026 | Deadline for Texas Property Tax Payments | Property Tax Statement | Annual | Property Owners | |
| Apr 15, 2026 | Individual Tax Return Filing (if not extended) | Form 1040 | Annual | Individuals (Sole Proprietors, etc.) | |
| Apr 15, 2026 | IRA/SEP IRA Contribution Deadline | N/A | Annual | All Individuals | |
| Apr 15, 2026 | 1st Quarter Estimated Tax Payment | Form 1040-ES | Quarterly | Sole Proprietors, Rental Property Owners | Estimated Taxes |
| Apr 20, 2026 | Texas Sales Tax (March) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | Sales Tax |
| May 15, 2026 | Property Tax Protest Deadline | Protest Form (County Specific) | Annual | Waller, Fort Bend, Harris County Property Owners | |
| May 15, 2026 | Texas Franchise Tax Filing | N/A | Annual | Businesses Operating in Texas | |
| May 20, 2026 | Texas Sales Tax (April) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | Sales Tax |
| Jun 15, 2026 | 2nd Quarter Estimated Tax Payment | Form 1040-ES | Quarterly | Sole Proprietors, Rental Property Owners | |
| Jun 15, 2026 | Excise Tax Payment (Manufacturing, etc.) | Excise Tax Form | Quarterly | Manufacturers, Certain Service Providers | |
| Jun 20, 2026 | Texas Sales Tax (May) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | |
| Jul 31, 2026 | Payroll Reports (Form 941 for Q2 2025) | Form 941 | Quarterly | Employers | Payroll Tax |
| Aug 20, 2026 | Texas Sales Tax (June) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | |
| Sep 15, 2026 | 3rd Quarter Estimated Tax Payment | Form 1040-ES | Quarterly | Sole Proprietors, Rental Property Owners | |
| Sep 15, 2026 | Excise Tax Payment (Manufacturing, etc.) | Excise Tax Form | Quarterly | Manufacturers, Certain Service Providers | |
| Sep 20, 2026 | Texas Sales Tax (August) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | |
| Oct 15, 2026 | Final Tax Return Filing (If Extended) | Form 1040, Form 1065, Form 1120S | Annual | All Businesses/Individuals | |
| Oct 20, 2026 | Texas Sales Tax (September) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | |
| Nov 20, 2026 | Texas Sales Tax (October) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | Sales Tax |
| Dec 15, 2026 | 4th Quarter Estimated Tax Payment | Form 1040-ES | Quarterly | Sole Proprietors, Rental Property Owners | Estimated Taxes |
| Dec 31, 2026 | Final Payroll Reports for 2025 | Form 941 | Quarterly | Employers | Personal Tax |
| Jan 15, 2027 | 4th Quarter Estimated Tax Payment (for 2026) | Form 1040-ES | Quarterly | Sole Proprietors, Rental Property Owners | |
| Jan 20, 2027 | Texas Sales Tax (December) | State-specific Sales Tax Form | Monthly | Retailers, Restaurants | |
| Jan 31, 2027 | W-2 and 1099-NEC Filing (for 2026) | Form W-2, Form 1099-NEC | Annual | All Businesses | |
| Jan 31, 2027 | FUTA Tax Filing (Form 940 for 2026) | Form 940 | Annual | Employers | |
| Texas Franchise Tax Filing | What: An annual tax imposed on each taxable entity formed or doing business in Texas. | Deadline: Usually May 15 each year (if the date falls on a weekend/holiday, the deadline moves to the next business day). | How: File online via the Texas Comptroller eSystems using your XT WebFile Number. Alternatively, you may file paper forms such as 05-158, 05-102, etc. | Who: Generally required if your entity’s gross receipts are above certain thresholds, or if you have a Texas nexus. | Penalty Reminder: Late or missing franchise tax filings/payment can result in significant penalties from the Texas Comptroller. |
| Disclaimers | Not Professional Advice: This information is for general reference only and does not constitute legal, tax, or financial advice. Always consult a www.mtbcpa.us, attorney, or official sources before taking action. | Dates May Shift: If a deadline falls on a weekend or federal/state holiday, it typically moves to the next business day. | Verify with Official Sources: Tax laws and deadlines can change. Always check the IRS and Texas Comptroller websites for updates. | ||
| Contact Information | www.mtbcpa.us | info@mtbcpa.us | 832-617-1280 |