Has anyone found a good source that explains the "safe harbor method" mentioned in question 3? What exactly does section 59(k)(3)(A) require?

I went through this exact same confusion last month when filing our 1120-F! As others have mentioned, these Corporate AMT questions are really only relevant for massive corporations. Since you mentioned you're a mid-sized foreign company filing for the first time, you can almost certainly answer "No" to all three questions. Just to break it down simply: - Question 1: Were you ever a billion-dollar+ company before? (Probably no) - Question 2: Are you a billion-dollar+ company now because you were before? (Probably no) - Question 3: Do you qualify to stop being considered a billion-dollar+ company? (Not applicable if you never were one) The IRS unfortunately makes everyone answer these questions even though they only apply to a tiny fraction of filers. It's like asking everyone if they own a yacht - most people can confidently say no! Just make sure to document your reasoning in case you're ever questioned about it.

Pro tip: you can add the virtual card to Apple/Google pay as soon as approved and start using it immediately instead of waiting for physical card

Just went through this process last month. The Credit Karma requirement is definitely new this year and caught me off guard too. The good news is the account setup is pretty straightforward and only takes a few minutes online. I'd recommend applying for the virtual card first like Lucas mentioned - saved me from waiting around for the physical one. Just make sure your tax situation is clean before applying since any holds or issues will disqualify you from the advance anyway.

Anyone have experience with H&R Block's handling of Form 2210? TurboTax always seems to calculate a penalty for me even when I don't think I should have one, wondering if switching software would help.

I had this exact same issue! The key thing to understand is that Line 8 on Form 2210 should be the SMALLER of two amounts, not necessarily your full 2023 tax liability. Since you mentioned having 110% of your 2023 tax withheld, you should definitely qualify for safe harbor protection. The problem might be that TurboTax isn't correctly applying the "deemed paid evenly" rule for W-2 withholding. Here's what worked for me: I manually calculated Form 2210 using both the regular method and the annualized income installment method to see which gave me a lower penalty (or no penalty). Sometimes the software defaults to one method when the other would be more favorable. Also, double-check that TurboTax is correctly pulling your 2023 tax amount. I've seen cases where the software uses the wrong line from the prior year return, especially if you had refundable credits that affected your actual tax liability vs. what you owed. If you're still getting a penalty calculation after verifying these details, you might want to file Form 2210 manually with your return to override the software's calculation.

One thing I learned the hard way - if this is your first time filing late, you can often get the penalties waived through First Time Penalty Abatement! Call the IRS and specifically request this if you've had a clean compliance history for the past 3 years. I filed my LLC taxes 2 months late last year and got hit with almost $800 in penalties, but they waived ALL of them when I requested abatement. You just need to have a "reasonable cause" explanation and be polite when you call.

This thread has been incredibly helpful! I'm in a similar situation with my single-member LLC and was panicking about missing the March 15th deadline. Finding out that I only need to file Schedule C with my personal taxes is such a relief. For anyone else reading this who might be confused like I was - it's worth double-checking whether your LLC is single-member or multi-member because the filing requirements are completely different. If you have any business partners or multiple owners, you DO need the 1065 and K-1 forms that the original poster was asking about. Also want to echo what others said about the First Time Penalty Abatement - I used this last year for a completely different tax issue and the IRS was actually pretty reasonable about it. Definitely worth asking for if you have a clean history!

One small additional tip - call your Secretary of State's office in MA to confirm your nonprofit corporation status is in good standing. Sometimes these IRS notices happen because there's a problem at the state level (like a missed annual report) that hasn't been communicated to you directly. Take photos of EVERYTHING you send to the IRS and keep detailed notes of every call (date, time, agent ID if they give one). You'll need this documentation if things get more complicated. Also, I'd seriously consider getting a consultation with a nonprofit tax attorney. Most will do a 30-minute consult for a reasonable fee, and having someone who can look at your specific situation could save you thousands in the long run.

I'm going through the exact same nightmare right now! Got a $8,200 tax assessment letter last week even though we filed our 1023 three months ago and are clearly within the 27-month window. The stress is unreal. Reading through all these responses has been incredibly helpful. I'm definitely going to try the Taxpayer Advocate Service route first since that sounds like the most legitimate path, and then maybe look into those AI tools if that doesn't work quickly enough. One question for everyone - has anyone dealt with the IRS trying to assess penalties on top of the back taxes? Our letter mentions additional penalty fees that would kick in if we don't respond, but it seems completely unfair when we haven't done anything wrong in the first place. Also wondering if anyone knows whether these automated notices affect your actual 1023 application processing time? I'm terrified this mess is going to delay our determination letter even more.