Can you give an example of the special treatment you're talking about? I have income from Canada and want to make sure I'm not missing anything.

For Canadian income specifically, you should check the US-Canada tax treaty to see if your type of income qualifies for reduced withholding or special classification. For example, certain royalties from Canada are subject to a maximum 10% withholding rate rather than standard rates. Also important for Canadian transactions - if you have income from Canadian retirement accounts, there are specific reporting requirements and potential treaty benefits. Some Canadian investment income might not need to be on Schedule NEC at all if it meets certain treaty qualifications. Review Article XI and XII of the treaty for investment income and royalties.

TurboTax Premium with the foreign tax package can handle additional non-ECI transactions. It automatically creates the attachment when you exceed the limit. I've used it for the past two years with no issues.

How would I calculate that 100% of last year's tax liability? Is that just the total amount on my 2024 return, or some specific line number?

Look at your 2024 Form 1040, line 24. That's your "total tax" - the number you need to meet or exceed through withholding and/or estimated payments to satisfy the safe harbor provision. If that amount was $10,000, for example, then as long as you have at least $10,000 withheld or paid via estimated payments for 2025, you won't face any underpayment penalties - even if your actual 2025 tax liability ends up being much higher due to your combined income sources.

Good point! In California they're super strict about quarterly payments for self-employment income. I got hit with a penalty even though I paid everything by tax day.

Would the 1031 exchange work even though this was inherited property that I've been using personally as a vacation home? I was under the impression those were only for investment properties.

You're right to question this - a 1031 exchange would not work in your situation. For a property to qualify for a 1031 exchange, it needs to have been held for productive use in a trade or business or for investment purposes. A personal vacation home that's not rented out wouldn't qualify. If you had been renting it out consistently when not using it personally, there might be a partial argument, but from your description, this sounds like a purely personal-use vacation property which wouldn't be eligible for 1031 treatment.

This is so important! I sold property in California last year and was shocked at the additional 9.3% state tax on my capital gains. Nearly doubled my tax bill from what I was expecting.

How did you handle the QI bankruptcy situation? Were you able to recover your funds or did you end up having to pay the capital gains?

I was extremely lucky that the bankruptcy happened on day 15 of my 45-day identification period. I immediately hired a new QI who was able to make a claim against the first QI's bond. I did recover about 85% of my funds eventually, but it delayed my purchase of the replacement property and caused a ton of stress. I ended up having to bring additional cash to closing to make up the difference. The bigger problem was that I nearly missed the 180-day deadline for completing the exchange because of all the legal complications. If that had happened, I would have owed tax on the full gain. Now I only use large, established QI companies that have significant insurance and bonding, even if they charge slightly higher fees.

I did this last year with a triplex (lived in one unit, rented two). My CPA had me use square footage as the most defensible method in case of audit. We calculated the percentage of the total square footage that my unit represented, then allocated purchase price, improvements, and selling costs accordingly. For common areas, we split those proportionally too. Keep VERY detailed records of when you converted part to personal use, any improvements made to either side, and maintenance costs. Take photos of everything. The more documentation you have, the better position you'll be in if the IRS questions your allocation.

I actually prepared and filed the 1040X myself using paper forms because the amendment was pretty simple - just correcting an education credit amount. So I don't have a preparer to contact. And I do have the physical copy, it's just missing the date in the signature section, which apparently is a deal-breaker for my financial aid office. They're super strict about having complete documentation.

That's unfortunate. In that case, I think your best options are what others have suggested - either visiting a Taxpayer Assistance Center in person for immediate help or using one of the services mentioned to get through to the IRS more efficiently. Since you mentioned your deadline is approaching, I'd probably pursue multiple options simultaneously. Start the process with taxr.ai since that seemed to work for someone else with your exact issue, but also try to schedule an in-person appointment at a TAC as a backup plan.

I heard they're severely understaffed and dealing with massive backlogs still. My cousin works for the IRS and says they're processing literally millions of paper forms with too few employees. Apparently the best times to call are early Tuesday, Wednesday or Thursday mornings right when they open.

Thanks for the tip. Maybe I'll try calling at 7am on Tuesday and see if that helps. It's just frustrating that they make it so difficult to get basic documents that we're legally required to have.