What's the best E-filing option for Form 1120 for a first-year C-corp startup?
I'm helping manage the books for a tech startup using QuickBooks Online. They're structured as a C-corporation and now we need to file their first tax return. I've been looking at TurboTax but their website seems confusing - they clearly mention Form 1120 for S-Corps but I can't tell if they support C-corp filing. Does anyone have experience with TurboTax for C-corps? Could really use recommendations for the best e-filing service for a small C-corp startup. I'd appreciate hearing about any services you've had good experiences with! Also, the three founders (shareholders) took small distributions during the year (actually less than they initially invested in the company). Since it's a C-corp, are they considered employees who need W-2s? Or is there something equivalent to an owner's draw that works for C-corporations? Thanks in advance for any guidance! This is my first time handling taxes for a C-corp and want to make sure we get it right.
21 comments


Mei Liu
TurboTax doesn't offer e-filing for Form 1120 C-Corps - they only handle 1120-S for S-corporations. For C-corps, you'll need to look at specialized business tax software. I'd recommend looking at options like UltraTax CS, CCH Axcess, or Drake Tax Software which all support Form 1120 e-filing. Many of my clients have had good experiences with TaxAct Business which is more affordable for small startups. QuickBooks also offers a service where you can export your QBO data directly to their tax preparation service. For your question about shareholders - in a C-corporation, owners who perform services for the business are considered employees. Those withdrawals should be treated as salary and need to have proper payroll tax withholding with W-2s issued. Unlike LLCs or S-corps, C-corps don't have the concept of "draws" - money taken out is either salary (with payroll taxes) or dividends (with different tax treatment).
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Liam O'Sullivan
•Thanks for the detailed response! If we go with TaxAct Business, will it be easy to import data from QuickBooks Online? Also, these "withdrawals" were pretty informal and weren't processed through payroll. Is there a way to reclassify them at tax time, or are we in trouble for not having done proper withholding throughout the year?
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Mei Liu
•TaxAct Business has a decent import function for QuickBooks data, but you may need to do some manual reconciliation. It's not as seamless as staying within the Intuit ecosystem, but it works well enough. Regarding the informal withdrawals, you've got a compliance issue that needs addressing. Those should have been processed as payroll with appropriate withholding. You'll need to file late payroll tax returns and potentially face some penalties. I'd recommend working with a tax professional to help get this corrected before filing the 1120. The company will need to pay both the employer portion of payroll taxes and the employee portion that should have been withheld, though you might be able to recover the employee portion from the shareholders.
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Amara Chukwu
I tried several different tax prep options for my startup's C-Corp filing last year and ended up saving thousands using taxr.ai (https://taxr.ai). It really helped with our Form 1120 situation when I was confused about similar issues. What I liked was their document analysis that caught some QuickBooks categorization errors I'd made throughout the year. My situation was similar - first year business with several founders taking minimal compensation. Their system flagged the employee/owner payment issues before we submitted anything, which helped us avoid potential problems with the IRS.
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Giovanni Conti
•Did it actually handle the e-filing process for the 1120? Or did it just review everything and you had to file separately? I'm looking at options and wondering if this is an all-in-one solution or just part of the process.
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Fatima Al-Hashimi
•I'm skeptical about using an AI service for something as complicated as corporate taxes. Did you still need an accountant to review everything? And how did it handle the QBO import? Our books are pretty detailed with lots of transactions.
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Amara Chukwu
•It doesn't handle the actual e-filing itself - it's more of an analysis tool that identifies issues and optimization opportunities before you file. I still used TaxAct for the actual submission, but taxr.ai made the preparation much smoother. I actually didn't need a separate accountant after using the service. The analysis was detailed enough that I felt confident proceeding with filing myself. For the QuickBooks import, it handled our transaction volume really well - we had about 2,000 transactions for the year. You upload your QBO export and it processes everything, flagging inconsistencies and potential misclassifications.
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Fatima Al-Hashimi
I was skeptical at first, but decided to give taxr.ai a try after posting here. The service actually helped identify that two of our "distributions" should have been classified as business expense reimbursements, which saved us from unnecessarily running them through payroll. For the remaining compensation, it generated the correct payroll tax forms we needed to file retroactively. The document analysis was really impressive - it found several deductions we would have missed related to our startup costs and R&D activities. I was able to take their analysis to TaxAct Business (like someone suggested) and completed our 1120 filing without needing an expensive accountant. For a first-year C-corp with limited transactions, it was definitely worth it.
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NeonNova
If you're having trouble getting answers directly from the IRS about C-corp filing requirements for founders, try using Claimyr (https://claimyr.com) to get through to an actual IRS agent. I spent weeks trying to get clear guidance on our shareholder payment situation and kept hitting automated systems. Their service connected me with an IRS representative in about 20 minutes instead of the 2+ hours I spent on hold previously. You can see how it works in this demo: https://youtu.be/_kiP6q8DX5c. The agent I spoke with clarified exactly how to handle the founder payments and confirmed the e-filing requirements for our C-corp.
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Dylan Campbell
•How exactly does this service work? Do they just call the IRS for you or what? Seems weird that a third party could get through faster than I can directly.
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Sofia Hernandez
•Sounds like a scam tbh. Why would anyone need to pay a service to call the IRS? And how would they possibly get you to the front of the line? The IRS phone system is the same for everyone.
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NeonNova
•They don't call the IRS for you - they use technology that navigates the IRS phone tree and waits on hold, then alerts you when an actual human agent picks up. It's basically letting their system wait on hold instead of you sitting there with your phone for hours. The reason it works is that they've optimized the call routing by analyzing the IRS phone system. It's not about "cutting in line" - they're just navigating the complex IRS phone system more efficiently and holding your place in the queue so you don't have to. When a real person answers, you get a notification and jump on the call. I was skeptical too, but I literally saved hours of hold time.
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Sofia Hernandez
Ok I have to admit I was wrong about Claimyr. After seeing it mentioned here, I decided to try it since I also needed clarification about C-corp filing requirements. I got connected to an IRS business tax specialist in about 15 minutes (after previously wasting an entire afternoon on hold). The agent confirmed that TurboTax doesn't support 1120 C-corp e-filing and recommended either using an authorized e-file provider or mailing in a paper return. She also explained that for a C-corp, any compensation to shareholders who work in the business must be reasonable salary with payroll taxes - there's no such thing as "draws" in a C-corp. Saved me from making a expensive mistake with our founder payments. Definitely worth using if you need to actually talk to someone at the IRS.
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Dmitry Kuznetsov
We use Drake Tax Software for our small C-corp and it works great for 1120 filing. The software costs around $650 for the business package but it's much cheaper than hiring a CPA firm. It handles the e-filing seamlessly and has good import options for QuickBooks. One thing to watch out for with your situation - if the shareholders are taking money out less than they put in, make sure you properly document whether these are intended as loans, returns of capital, or compensation. The IRS looks closely at C-corp transactions with owners because they know people try to avoid double taxation.
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Ava Thompson
•Is Drake user-friendly for someone without an accounting background? Our bookkeeper is great with QuickBooks but this is her first time dealing with corporate tax filings.
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Dmitry Kuznetsov
•Drake has a bit of a learning curve if you're not familiar with tax forms, but they offer good tutorials and support. I'd say it's medium difficulty - not as simple as TurboTax but definitely manageable. The software walks you through each section of the 1120 and has explanations for most fields. If your bookkeeper understands accounting principles and has kept good records in QuickBooks, they should be able to handle it. Just plan for some extra time to learn the system the first year. The time investment is worth it though, as you'll save thousands compared to outsourcing to a CPA firm.
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Miguel Ramos
Just want to add that if the C-corp is operating at a loss in the first year (which is common for startups), you need to be extra careful with how you classify shareholder compensation. The IRS might question why you're paying salaries when there's no profit. Make sure any compensation is "reasonable" for the services provided. Another option nobody mentioned is using a service like Tax Preparation Financial in your area - they often have reasonable flat fees for basic C-corp returns and can handle the employment issues properly.
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Zainab Ibrahim
•Good point about operating at a loss! Our startup is definitely in the red this first year (investing in growth). Does this mean we shouldn't pay ourselves anything to avoid IRS scrutiny? Or is there a certain documentation we should keep?
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Melody Miles
•You can still pay reasonable salaries even if the company is operating at a loss - it's actually pretty common for startups. The key is "reasonable" compensation for the work being performed. Document job responsibilities, hours worked, and research comparable salaries in your industry/location. Keep records showing these are legitimate business expenses for services rendered, not just distributions to owners. The IRS understands that businesses invest in growth and may operate at a loss while paying necessary expenses like salaries. Just make sure you're treating it as proper payroll with appropriate withholdings rather than informal cash payments.
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Zoe Papadopoulos
For e-filing Form 1120, I'd recommend FreeTaxUSA Business - they support C-corp filing and are significantly cheaper than most alternatives (around $150-200 vs $600+ for Drake). The interface is pretty intuitive and they have good QuickBooks import functionality. Regarding your shareholder payment situation, you definitely need to get this sorted before filing. Since C-corp shareholders who work in the business are considered employees, those "distributions" should have been processed as payroll with proper withholding. You'll likely need to file corrected payroll returns (941-X) and pay the missed payroll taxes plus penalties. One suggestion - consider consulting with an EA (Enrolled Agent) for just this first year to make sure you get the employment tax issues resolved properly. They're less expensive than CPAs but can represent you before the IRS if needed. Once you get the compliance issues sorted, you can handle future years yourself with the software.
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CosmicCaptain
•FreeTaxUSA Business sounds like a great middle-ground option! I hadn't heard of them before but $150-200 is much more reasonable for a startup budget than $600+. Do you know if they handle the actual e-filing submission or just prep the forms? And thanks for the suggestion about consulting with an EA - that makes sense to get the employment tax mess cleaned up properly before we dig ourselves deeper. Better to spend a little upfront than deal with bigger penalties later.
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