Do you list every single transaction separately? My Cash App export has like 200+ transactions. Do I seriously need to document each one?

You don't need to list every transaction individually on your tax return, but you should have documentation for them in your records. I grouped similar transactions together - for example, "January-March roommate utility reimbursements: $450" rather than listing each $25-50 payment separately. For your records, I'd recommend at least categorizing each transaction in a spreadsheet. You can summarize these categories on your tax forms, but have the detailed breakdown available if ever questioned. The key is showing you've done your due diligence in separating actual income from money that was just passing through your account.

For a car sale, you need to report it but it's considered a personal capital asset sale, not regular income. You'll use Form 8949 and Schedule D instead of Schedule C. You only pay taxes on the profit (if any) compared to what you originally paid for the car. So if you bought the car for $20,000 and sold it for $18,000, you actually have a $2,000 loss which isn't taxable. If you made a profit, you'd pay capital gains tax on that amount. Just make sure you have documentation of your original purchase price.

Do you know if there's a time limit for claiming those refunds from foreign tax authorities? I just realized my broker has been withholding at the wrong rate for my German stocks for the past few years.

Most countries have a statute of limitations for tax refund claims. For Germany specifically, you generally have four years from the end of the calendar year in which the tax was withheld to file a claim. So for 2022 withholding, you should be able to file until the end of 2026. For your German stocks, you'll need to file a claim using their specific form (usually Form ZS-DE for US residents) and provide documentation of your tax residence in the US, typically a certificate of residence that you can request from the IRS. Each country has their own process, so you'll need to check the specific requirements for any other countries you have investments in.

I used H&R Block last year with a similar portfolio mix. It handled ADRs fine since they come in on a 1099, but for direct foreign investments it wasn't very intuitive. The foreign tax credit section especially was confusing and I wasn't confident I did it right. I switched to TaxAct this year and found their international investment section more user-friendly.

Thanks for sharing your experience. That's exactly what I was worried about - the direct foreign investments part. I'll check out TaxAct before I commit to H&R Block again. Did you notice any difference in how they handled the Form 1116 calculations?

Does commercial insurance become a 70% write-off too (matching the business use percentage) or can you deduct the full difference between personal and commercial rates?

You would deduct the commercial insurance at the same percentage as your business use - so 70% in your case. The simplest approach is to pay for the insurance from your business account and then account for the personal portion (30%) as a draw or distribution to yourself. If you're using the standard mileage rate though, insurance is already built into that rate, so you wouldn't deduct insurance separately. That's one of the tradeoffs between the two methods - standard mileage is simpler but gives you less itemized control.

This is important! The luxury auto limits for 2023 kicked in at $20,200 for passenger cars. It'll probably be a bit higher for 2025. Under that limit, you can take larger depreciation deductions. Over that threshold, your annual depreciation gets capped, stretching out the deductions over more years.

Is the $600 limit per person or per return? Like if I'm married filing jointly, do we get $1,200 total or still just $600?

The limit is per tax return for single filers, but for married filing jointly, it's per person. So for 2021 (which had the $300 per person limit), a married couple filing jointly could claim up to $600 total on line 10-B if taking the standard deduction. The exact limits have changed over the years as this was a temporary provision, so always check the current year's instructions. The most important thing is that this special deduction on line 10-B is ONLY for people taking the standard deduction. If you itemize, you'll include all charitable contributions on Schedule A instead.

TurboTax is correct - you can't do both. It's either all on Schedule A (if you're itemizing) OR up to $600 on line 10-B (if taking the standard deduction). Your accountant friend might be confusing this with some other deduction rules.

Thanks for mentioning H&R Block! Did you have any issues with their import feature? I tried using CSV imports with TurboTax and it kept failing with my large number of transactions. Also, did you still have to manually verify each transaction after import or does it handle batches well?

The import feature works well with properly formatted CSVs, but you need to follow their template exactly. I had no issues with about 450 transactions last year, though I've heard mixed results from others with very large transaction counts (1000+). You don't need to manually verify each transaction after import, which is a huge timesaver. H&R Block handles batch processing well and groups similar transactions appropriately. The software still does some verification checks, but it's usually just confirming the total amounts rather than line-by-line review. Make sure your CSV includes all the required fields (date acquired, date sold, proceeds, cost basis, etc.) to avoid validation errors.

That's brutal! Did you at least get a tracking number or some kind of confirmation that they received your paperwork? I'm worried about mailing in hundreds of pages and them just getting lost in some IRS warehouse.