Startup Tax FAQ

Описание: Startup taxes FAQ and answers

C-Corp & Startup Tax FAQ: Deadlines, Forms, Credits & What Founders Need to Know in 2025

 

✅ FAQ (answers below)

• What are the C-Corp tax rates for 2025?

• When is the C-Corp tax return due?

• What form do C-Corps file with the IRS?

• How do I file Form 1120 online?

• What’s included in the 2025 startup tax calendar?

• Do startups have to pay taxes in their first year?

• What startup tax credits or deductions can I use?

• How are startup founders taxed on equity?

• What are the best tax filing options for early-stage founders?

• Where can I get reminders or software for startup tax deadlines?

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❓ What are the C-Corp tax rates for 2025?

🧠 The federal tax rate for C-Corporations is 21% and it’s flat, not progressive. However, your state may charge additional corporate income tax (e.g., Delaware: 8.7%).

💡 Pro tip: Delaware franchise tax is separate and due March 1st.

 

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❓ When is the C-Corp tax return due?

📅 If your C-Corp uses a calendar year, your Form 1120 is due March 15, 2025.

🛑 Missed it? You can request a 6-month extension, but you still need to pay your estimated tax by the due date to avoid penalties.

 

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❓ What IRS form does a C-Corp file?

🧾 Form 1120 is the standard U.S. Corporation Income Tax Return.

If you're unsure whether to file 1120 or another form (like 1120-S), the rule of thumb:

• C-Corp → 1120

• S-Corp → 1120-S 

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❓ How do I file Form 1120 online?

You can’t e-file 1120 directly via IRS.gov — you need to:

1. Use an IRS-authorized e-file provider (e.g., TaxBandits, TurboTax Business).

2. Or file through a CPA or a tool like TaxHero if you’re a startup.

📦 Need an extension? File Form 7004 electronically, same method.

 

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❓ What’s in the 2025 startup tax calendar?

Click here or 

Get a personalized calendar for your startup here - https://taxhero.vc/checkin just answer a few questions and get reminders (it's free) 

 

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❓ Do startups have to pay taxes in their first year?

Yes, especially if you made revenue, paid contractors, or had employees.

⚠️ Even if you made $0, Delaware still requires a franchise tax filing.

 

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❓ What startup tax credits or deductions can I use?

Some big ones include:

• R&D Tax Credit (even for early-stage)

• Startup Cost Deduction (up to $5,000 in year 1)

• Home Office / Equipment / Software

📊 Use a smart bookkeeping tool (or AI tool like TaxHero AI) to track these, they add up.

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❓ How are founders taxed on equity?

It depends:

• If you’re paid salary → it’s regular income

• If you got shares → File an 83(b) within 30 days of grant to lock in capital gains treatment.

💸 Not filing that? You might owe huge taxes later on paper gains.

 

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❓ What are my options for filing taxes as a startup?

Three common paths:

1. DIY using tools like TurboTax Business or FreeFile

2. Hire a CPA (expensive but full-service)

3. Use a startup-focused service like TaxHero AI - built for Delaware C-Corps under $5K MRR

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❓ How do I get tax deadline reminders or help?

🧠 Use software that syncs your company profile with real deadlines, not just Google Calendar.

With TaxHero AI, you get:

• Auto-generated startup tax calendar

• Filing status tracker

• Deadline reminders (email)

• AI-powered form checks & suggestions

→ Try it free at https://taxhero.vc

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