Check our 2025 Tax Deadlines For C-Corp Startups or Click for your customized tax compliance calendar by startup hub
For Dallas-based businesses, the critical tax deadlines in 2025 include the April 15th state and federal tax return deadlines (which can be extended until October 15th) and the various federal and state filings listed in the calendar below.
Delaware Quarterly Estimated Franchise Tax. Pay 40% of estimated annual amount (if annual amount expected to exceed $5,000).
Delaware Quarterly Estimated Franchise Tax. Pay 20% of your estimated annual amount (if annual amount expected to exceed $5,000).
Texas Franchise Tax Forms 05-158, Public Information Report Form 05-102, Ownership Information Report Form 05-167, and Research & Development Activities Credits Schedule Form 05-178 final due date if extension was filed.
Delaware Quarterly Estimated Franchise Tax, Pay 20% of estimated annual amount (if annual amount expected to exceed $5,000).
Click The Links To Learn More About These Filings And 2025 Dallas Startup Tax Deadlines
Claim Research & Development Tax Credits on Form 941, and file annual Federal Unemployment Tax Act (FUTA) return on Form 940. Use our handy calculator to estimate your possible research and development tax credit.
Delaware Annual Franchise Report filing deadline. Your Dallas startup will pay a minimum of $400, which increases if you have significant funding.
IRS 30-day automatic extension: provide Form 1095-B and Form 1095C to employees.
Tangible Personal Property Rendition filed with county tax commissioner.
C Corp Form 1120 Tax Return due. The Federal Form 1120 is the U.S. Corporation Income Tax Return, which the IRS has companies use to report their income, losses, credits, etc., and to figure the income tax liability of the corporation. Can extend the deadline to Oct. 15. All Dallas startups are required to file this Federal form by this deadline unless they file an extension.
Federal Quarterly Estimated Tax 1st installment (first quarter 2024).
File the R&D Tax Credit Form 6765 with your tax return. Can extend to October 15. We strongly recommend working with a qualified CPA to prepare this form in conjunction with your Form 1120 if you are a high-growth startup – if your company is going to be acquired by a major technology company, that company’s CFO will use a strong tax team to do due diligence on this.
Due date for Dallas startup employees to make contributions to Individual Retirement Accounts (IRAs) for 2023 (Employee Benefits).
Dallas startups can claim Research & Development Tax Credits on Form 941.
Texas Franchise Tax Forms 05-158, Public Information Report Form 05-102, Ownership Information Report Form 05-167, and Research & Development Activities Credits Schedule Form 05-178 due. (May be extended to January 31.)
Delaware Quarterly Estimated Franchise Tax. Pay 40% of estimated annual amount (if annual amount expected to exceed $5,000).
Federal Quarterly Estimated Tax 2nd installment (second quarter 2024).
Claim Research & Development Tax Credits on Form 941 .
Delaware Quarterly Estimated Franchise Tax. Pay 20% of your estimated annual amount (if annual amount expected to exceed $5,000).
Federal Quarterly Estimated Tax 3rd installment (third quarter 2024).
C Corp Form 1120 Tax Return final due date for Dallas startups if extension was filed.
Claim your Research & Development Tax Credits on Form 941.
Texas Franchise Tax Forms 05-158, Public Information Report Form 05-102, Ownership Information Report Form 05-167, and Research & Development Activities Credits Schedule Form 05-178 final due date if extension was filed.
Delaware Quarterly Estimated Franchise Tax, Pay 20% of estimated annual amount (if annual amount expected to exceed $5,000).
Federal Quarterly Estimated Tax 4th installment (fourth quarter 2024).
Note: The federal tax deadline in 2025 falls on April 15. The federal extension deadline for 2025 is October 15. Most states usually follow the same calendar for state income tax returns.
If your Delaware C-Corp Dallas funded startup needs tax help contact us today!
DALLAS, STARTUPS AND TAXES
Dallas has been ranked as the 3rd Fastest Growing Startup City in the US by York IE, an investment firm for tech companies. Dallas-Fort Worth’s economy grew by 5.5% in the first quarter of 2023, and added 116,000 new jobs. In 2023, $1.5 billion was invested in startups in Dallas, according to growthlist.co. Since 2010, more than 200 new corporate headquarters moved to the North Texas area, and the region is now home to 24 Fortune 500 companies. As part of the “Texas Triangle,” including San Antonio and Houston, the region is projected to grow by 65% over the next 40 years, with a low cost of living and a highly educated workforce.
The most important taxing authorities for companies based in Austin are:
For Dallas-based businesses, the critical tax deadlines in 2025 include the April 15th state and federal tax return deadlines (which can be extended until Oct 15th) and the various federal and state filings listed in the calendar above.
2024 startup tax deadlines are supplied for reference purposes only, and should not be used when making decisions in 2025 or beyond. Always consult your tax professional, and see our disclaimer below.
Click The Links To Learn More About These Filings And 2024 Dallas Startup Tax Deadlines
Federal Quarterly Estimated Tax 4th installment (fourth quarter 2023).
Dallas startups should send 1099s to contractors. Send W2s to employees and e-file 1099-MISC for non-employee compensation with the IRS. Or file Form 8809 for a 30-day extension to file W2s and 1099-MISC for non-employee compensation.
Claim Research & Development Tax Credits on Form 941, and file annual Federal Unemployment Tax Act (FUTA) return on Form 940. Use our handy calculator to estimate your possible research and development tax credit.
IRS 30-day automatic extension: provide Form 1095-B and Form 1095C to employees.
Delaware Annual Franchise Report filing deadline. Your Dallas startup will pay a minimum of $400, which increases if you have significant funding.
Tangible Personal Property Rendition filed with county tax commissioner.
Due date for Dallas startup employees to make contributions to Individual Retirement Accounts (IRAs) for 2023 (Employee Benefits).
File the R&D Tax Credit Form 6765 with your tax return. Can extend to October 15. We strongly recommend working with a qualified CPA to prepare this form in conjunction with your Form 1120 if you are a high-growth startup – if your company is going to be acquired by a major technology company, that company’s CFO will use a strong tax team to do due diligence on this.
Federal Quarterly Estimated Tax 1st installment (first quarter 2024).
C Corp Form 1120 Tax Return due. The Federal Form 1120 is the U.S. Corporation Income Tax Return, which the IRS has companies use to report their income, losses, credits, etc., and to figure the income tax liability of the corporation. Can extend the deadline to Oct. 15. All Dallas startups are required to file this Federal form by this deadline unless they file an extension.
Dallas startups can claim Research & Development Tax Credits on Form 941.
Texas Franchise Tax Forms 05-158, Public Information Report Form 05-102, Ownership Information Report Form 05-167, and Research & Development Activities Credits Schedule Form 05-178 due. (May be extended to January 31.)
Delaware Quarterly Estimated Franchise Tax. Pay 40% of estimated annual amount (if annual amount expected to exceed $5,000).
Federal Quarterly Estimated Tax 2nd installment (second quarter 2024).
Claim Research & Development Tax Credits on Form 941 .
Delaware Quarterly Estimated Franchise Tax. Pay 20% of your estimated annual amount (if annual amount expected to exceed $5,000).
Federal Quarterly Estimated Tax 3rd installment (third quarter 2024).
Texas Franchise Tax Forms 05-158, Public Information Report Form 05-102, Ownership Information Report Form 05-167, and Research & Development Activities Credits Schedule Form 05-178 final due date if extension was filed.
C Corp Form 1120 Tax Return final due date for Dallas startups if extension was filed.
Claim your Research & Development Tax Credits on Form 941.
Delaware Quarterly Estimated Franchise Tax, Pay 20% of estimated annual amount (if annual amount expected to exceed $5,000).
View tax compliance dates for Austin, Boston, New York City, Palo Alto, San Francisco, Santa Monica, Seattle, Washington DC, Atlanta, Salt Lake City, Mountain View, Chicago, Dallas, Miami, and San Jose
How Much Does a Startup Tax Return Cost? Try Kruze Consulting's Tax Preparation Pricing Tool.
How much can your startup save in payroll taxes? Estimate your R&D tax credit using our free calculator.
Every startup is different and so are its tax compliance needs. This is only a guideline. Please consult your tax professional. IRS Circular 230 Disclaimer: To ensure compliance with IRS Circular 230, any U.S. federal tax advice provided in this communication is not intended or written to be used, and it cannot be used by the recipient or any other taxpayer for the purpose of avoiding tax penalties that may be imposed on the recipient or any other taxpayer. Copyright © Kruze Consulting
Check our 2025 Tax Deadlines For C-Corp Startups or Click for your customized tax compliance calendar by startup hub
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