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2027 Tax Deadlines for Miami Startups
The 2027 calendar for Miami startups should distinguish federal corporate income tax from Florida’s separate filing and estimated payment schedules. The recurring Florida corporate return deadline is May 1, not April 15; because May 1, 2027 is a Saturday, the 2027 due date moves to Monday, May 3. Corporations expecting to owe more than $2,500 generally make quarterly estimated payments. Businesses should also evaluate Miami-Dade tangible personal property reporting and renew applicable county and City of Miami business tax receipts. A Miami mailing address does not necessarily place a company within City of Miami jurisdiction.
File Form 941 for Q4 and the annual Federal Unemployment Tax Act (FUTA) return on Form 940 (both may be filed by February 10 if all deposits were made on time). Qualified small businesses claim the payroll tax R&D credit by attaching Form 8974 to Form 941. Use our calculator to estimate your possible research and development tax credit.
Miami startups should send Forms 1099-NEC to contractors ($2,000 or more in nonemployee compensation) and W-2s to employees, and file both with the IRS/SSA. Report nonemployee compensation on Form 1099-NEC (not 1099-MISC). A Form 8809 extension is not automatic for W-2s or 1099-NEC and is granted only in limited circumstances.
3tax events
Delaware Annual Franchise Report and franchise tax due. Your Miami startup will owe the lower of the authorized shares method (minimum $175) or the assumed par value capital method (minimum $400), plus a $50 annual report fee. Late filing penalty is $200 plus 1.5% monthly interest.
For Miami startups, ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if paper-filing (e-filing is due March 31). Paper filing is allowed only if you file fewer than 10 information returns in total. Applies to applicable large employers (50+ full-time equivalent employees) and employers with self-insured plans. File Form 8809 for a 30-day extension.
Deadline to furnish Forms 1095-B and 1095-C to employees (the January 31 deadline is automatically extended 30 days to March 2; no request is needed).
1tax event
ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if e-filing. E-filing is required if you file 10 or more information returns in total (including W-2s and 1099s). File Form 8809 for an automatic 30-day extension.
4tax events
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 Miami startups are required to file this Federal form by this deadline unless they file an extension.
File the R&D Tax Credit Form 6765 with your tax return (Form 1120). Can extend to October 15 along with the return. We strongly recommend working with a qualified CPA to prepare this form: If your company is acquired, the buyer’s tax team will review the credit during due diligence.
Due date for Miami startup employees to make contributions to Individual Retirement Accounts (IRAs) for 2026 (Employee Benefits).
1tax event
Miami startups can claim Research & Development Tax Credits on Form 941 for Q1 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #1. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #2. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
1tax event
Miami startups can claim Research & Development Tax Credits on Form 941 for Q2 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #3. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Miami startups can claim Research & Development Tax Credits on Form 941 for Q3 (attach Form 8974; the election is made on Form 6765 with your income tax refund).
1tax event
Delaware Quarterly Estimated Franchise Tax payment due. Pay 20% of your estimated annual amount (required if your annual franchise tax is $5,000 or more). The remainder is due with the annual report on March 1.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #4. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Total 27 Tax events for Miami in 2027
Click The Links To Learn More About These Filings And 2027
Miami Startup Tax Deadlines
File Form 941 for Q4 and the annual Federal Unemployment Tax Act (FUTA) return on Form 940 (both may be filed by February 10 if all deposits were made on time). Qualified small businesses claim the payroll tax R&D credit by attaching Form 8974 to Form 941. Use our calculator to estimate your possible research and development tax credit.
1 Feb 2027
Miami startups should send Forms 1099-NEC to contractors ($2,000 or more in nonemployee compensation) and W-2s to employees, and file both with the IRS/SSA. Report nonemployee compensation on Form 1099-NEC (not 1099-MISC). A Form 8809 extension is not automatic for W-2s or 1099-NEC and is granted only in limited circumstances.
1 Mar 2027
Delaware Annual Franchise Report and franchise tax due. Your Miami startup will owe the lower of the authorized shares method (minimum $175) or the assumed par value capital method (minimum $400), plus a $50 annual report fee. Late filing penalty is $200 plus 1.5% monthly interest.
1 Mar 2027
For Miami startups, ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if paper-filing (e-filing is due March 31). Paper filing is allowed only if you file fewer than 10 information returns in total. Applies to applicable large employers (50+ full-time equivalent employees) and employers with self-insured plans. File Form 8809 for a 30-day extension.
1 Mar 2027
Deadline to furnish Forms 1095-B and 1095-C to employees (the January 31 deadline is automatically extended 30 days to March 2; no request is needed).
31 Mar 2027
ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if e-filing. E-filing is required if you file 10 or more information returns in total (including W-2s and 1099s). File Form 8809 for an automatic 30-day extension.
15 Apr 2027
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 Miami startups are required to file this Federal form by this deadline unless they file an extension.
File the R&D Tax Credit Form 6765 with your tax return (Form 1120). Can extend to October 15 along with the return. We strongly recommend working with a qualified CPA to prepare this form: If your company is acquired, the buyer’s tax team will review the credit during due diligence.
15 Apr 2027
Due date for Miami startup employees to make contributions to Individual Retirement Accounts (IRAs) for 2026 (Employee Benefits).
30 Apr 2027
Miami startups can claim Research & Development Tax Credits on Form 941 for Q1 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #1. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #2. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
2 Aug 2027
Miami startups can claim Research & Development Tax Credits on Form 941 for Q2 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #3. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Miami startups can claim Research & Development Tax Credits on Form 941 for Q3 (attach Form 8974; the election is made on Form 6765 with your income tax refund).
1 Dec 2027
Delaware Quarterly Estimated Franchise Tax payment due. Pay 20% of your estimated annual amount (required if your annual franchise tax is $5,000 or more). The remainder is due with the annual report on March 1.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #4. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
File Form 941 for Q4 and the annual Federal Unemployment Tax Act (FUTA) return on Form 940 (both may be filed by February 10 if all deposits were made on time). Qualified small businesses claim the payroll tax R&D credit by attaching Form 8974 to Form 941. Use our calculator to estimate your possible research and development tax credit.
Miami startups should send Forms 1099-NEC to contractors ($2,000 or more in nonemployee compensation) and W-2s to employees, and file both with the IRS/SSA. Report nonemployee compensation on Form 1099-NEC (not 1099-MISC). A Form 8809 extension is not automatic for W-2s or 1099-NEC and is granted only in limited circumstances.
01
Mar
2027
Delaware Annual Franchise Report and franchise tax due. Your Miami startup will owe the lower of the authorized shares method (minimum $175) or the assumed par value capital method (minimum $400), plus a $50 annual report fee. Late filing penalty is $200 plus 1.5% monthly interest.
For Miami startups, ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if paper-filing (e-filing is due March 31). Paper filing is allowed only if you file fewer than 10 information returns in total. Applies to applicable large employers (50+ full-time equivalent employees) and employers with self-insured plans. File Form 8809 for a 30-day extension.
Deadline to furnish Forms 1095-B and 1095-C to employees (the January 31 deadline is automatically extended 30 days to March 2; no request is needed).
31
Mar
2027
ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if e-filing. E-filing is required if you file 10 or more information returns in total (including W-2s and 1099s). File Form 8809 for an automatic 30-day extension.
15
Apr
2027
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 Miami startups are required to file this Federal form by this deadline unless they file an extension.
File the R&D Tax Credit Form 6765 with your tax return (Form 1120). Can extend to October 15 along with the return. We strongly recommend working with a qualified CPA to prepare this form: If your company is acquired, the buyer’s tax team will review the credit during due diligence.
Due date for Miami startup employees to make contributions to Individual Retirement Accounts (IRAs) for 2026 (Employee Benefits).
30
Apr
2027
Miami startups can claim Research & Development Tax Credits on Form 941 for Q1 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #1. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #2. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
02
Aug
2027
Miami startups can claim Research & Development Tax Credits on Form 941 for Q2 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #3. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Miami startups can claim Research & Development Tax Credits on Form 941 for Q3 (attach Form 8974; the election is made on Form 6765 with your income tax refund).
01
Dec
2027
Delaware Quarterly Estimated Franchise Tax payment due. Pay 20% of your estimated annual amount (required if your annual franchise tax is $5,000 or more). The remainder is due with the annual report on March 1.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #4. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Note: The federal tax deadline in 2027 falls on April 15. The federal extension deadline for 2027 is October 15. Most states usually follow the same calendar for state income tax returns.
Miami connects startup founders with investors, entrepreneurial networks, and business relationships across the United States and Latin America. The Miami-Dade Beacon Council cites more than 2,500 startups, $2.41 billion in annual venture capital, and a 16th-place showing in Startup Genome’s 2024 global ranking.
The annual eMerge Americas conference publishes ecosystem insights on AI, health technology, fintech, and climate technology, and an Inter-American Development Bank study examines how the ecosystem links to Latin America. That reach serves companies building financial technology, health technology, software, and other products for domestic and international customers.
Total 25 Tax events for Miami in 2026
Click The Links To Learn More About These Filings And 2026
Miami Startup Tax Deadlines
File Form 941 for Q4 of the prior year and file annual Federal Unemployment Tax Act (FUTA) return on Form 940 (both may be filed by February 10 if all deposits were made on time). Qualified small businesses claim the payroll tax R&D credit by attaching Form 8974 to Form 941. Use our handy calculator to estimate your possible research and development tax credit.
2 Feb 2026
Miami startups should send Forms 1099-NEC to contractors ($600 or more in nonemployee compensation) and W2s to employees, and file both with the IRS/SSA. Report nonemployee compensation on Form 1099-NEC. A Form 8809 is not automatic for W-2s or 1099-NEC and is granted only in limited circumstances.
1 Mar 2026
Delaware Annual Franchise Report and franchise tax due. Your Miami startup will owe the lower of the authorized shares method (minimum $175) or the assumed par value capital method (minimum $400), plus a $50 annual report fee. Late filing penalty is $200 plus 1.5% monthly interest.
2 Mar 2026
For Miami startups, ACA Information Returns (Forms 1094-B/1095-B and 1094-C/1095-C) filings are due to the IRS if paper-filing (e-filing is due March 31). Paper filing is allowed only if you file fewer than 10 information returns in total. Applies to applicable large employers (50+ full-time equivalent employees) and employers with self-insured plans. File Form 8809 for a 30-day extension.
2 Mar 2026
Deadline to furnish Forms 1095-B and 1095-C to employees (the January 31 deadline is automatically extended 30 days to March 2; no request is needed).
31 Mar 2026
ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if e-filing. E-filing is required if you file 10 or more information returns in total (including W-2s and 1099s). File Form 8809 for an automatic 30-day extension.
15 Apr 2026
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 October 15 (file Form 7004; tax owed is still due April 15). All Miami startups are required to file this Federal form by this deadline unless they file an extension.
File the R&D Tax Credit Form 6765 with your tax return (Form 1120). Can extend to October 15 along with the return. We strongly recommend working with a qualified CPA to prepare this form: if your company is acquired, the buyer’s tax team will review the credit during due diligence.
15 Apr 2026
Due date for Miami startup employees to make contributions to Individual Retirement Accounts (IRAs) for prior year (Employee Benefits).
30 Apr 2026
Miami startups can claim Research & Development Tax Credits on Form 941 for Q1 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #1. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #2. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
31 Jul 2026
Miami startups can claim Research & Development Tax Credits on Form 941 for Q2 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #3. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Miami startups can claim Research & Development Tax Creditss on Form 941 for Q3 (attach Form 8974; the election is made on Form 6765 with your income tax return).
File Form 941 for Q4 of the prior year and file annual Federal Unemployment Tax Act (FUTA) return on Form 940 (both may be filed by February 10 if all deposits were made on time). Qualified small businesses claim the payroll tax R&D credit by attaching Form 8974 to Form 941. Use our handy calculator to estimate your possible research and development tax credit.
Miami startups should send Forms 1099-NEC to contractors ($600 or more in nonemployee compensation) and W2s to employees, and file both with the IRS/SSA. Report nonemployee compensation on Form 1099-NEC. A Form 8809 is not automatic for W-2s or 1099-NEC and is granted only in limited circumstances.
01
Mar
2026
Delaware Annual Franchise Report and franchise tax due. Your Miami startup will owe the lower of the authorized shares method (minimum $175) or the assumed par value capital method (minimum $400), plus a $50 annual report fee. Late filing penalty is $200 plus 1.5% monthly interest.
02
Mar
2026
For Miami startups, ACA Information Returns (Forms 1094-B/1095-B and 1094-C/1095-C) filings are due to the IRS if paper-filing (e-filing is due March 31). Paper filing is allowed only if you file fewer than 10 information returns in total. Applies to applicable large employers (50+ full-time equivalent employees) and employers with self-insured plans. File Form 8809 for a 30-day extension.
Deadline to furnish Forms 1095-B and 1095-C to employees (the January 31 deadline is automatically extended 30 days to March 2; no request is needed).
31
Mar
2026
ACA information returns (Forms 1094-B/1095-B and 1094-C/1095-C) are due to the IRS if e-filing. E-filing is required if you file 10 or more information returns in total (including W-2s and 1099s). File Form 8809 for an automatic 30-day extension.
15
Apr
2026
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 October 15 (file Form 7004; tax owed is still due April 15). All Miami startups are required to file this Federal form by this deadline unless they file an extension.
File the R&D Tax Credit Form 6765 with your tax return (Form 1120). Can extend to October 15 along with the return. We strongly recommend working with a qualified CPA to prepare this form: if your company is acquired, the buyer’s tax team will review the credit during due diligence.
Due date for Miami startup employees to make contributions to Individual Retirement Accounts (IRAs) for prior year (Employee Benefits).
30
Apr
2026
Miami startups can claim Research & Development Tax Credits on Form 941 for Q1 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #1. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #2. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
31
Jul
2026
Miami startups can claim Research & Development Tax Credits on Form 941 for Q2 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Florida Estimated Corporate Income Tax payment (Form F-1120ES) due – Installment #3. Estimated payments are required if you expect to owe more than $2,500 in Florida corporate income tax.
Miami startups can claim Research & Development Tax Creditss on Form 941 for Q3 (attach Form 8974; the election is made on Form 6765 with your income tax return).
Find important local and city-specific startup tax deadlines here, including state and municipal filing dates, estimated payment deadlines, and key compliance requirements for major business hubs.
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We build financial models that have been used to pitch (and secure millions in funding) from premier VC firms and top angel investors. We also provide 409A valuations, KPI dashboards, cap table management, venture debt consulting, budgeting, and much more.
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Founder & CEO, Vanessa Kruze, is a CPA, Deloitte Tax alumni, and former Controller of a 120+ FTE startup. Our Staff Accountants and Controllers come from the Big 4 and venture backed startups.
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With former venture capitalists on staff, our team is here to help you navigate the fundraising process and manage your board of directors
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Head of Operations & Legal
Clients who have worked with Kruze have collectively raised over $15 billion in VC funding.
We set startups up for fundrising success, and know how to work with the top VCs.
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Founder & CEO
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Controller, CPA
Grew from a 2-person startup to a NASDAQ listed public company.
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