Another thing to consider - your CPA might have been using EFTPS (Electronic Federal Tax Payment System) to make your estimated payments. If you can get access to that account, it would show your payment history. But that might be tricky if the CPA set it up.

This is such a frustrating situation, and unfortunately more common than it should be. I went through something similar a few years back when my CPA suddenly became unreachable during tax season. One thing I'd add to the great advice already given - if you're going to call the IRS directly, try calling early in the morning (like 7-8 AM) on weekdays. The wait times are usually much shorter then. Also, have your prior year tax return handy when you call since they'll ask for specific information from it to verify your identity. For your state payments, definitely check if your state has a mobile app for tax services. I was surprised to find that my state (California) actually has a pretty decent app that shows payment history and is easier to navigate than their website. One last tip - document everything you find out about your payments in a spreadsheet or something organized. You'll likely need this information not just for filing your 2025 return, but potentially for future reference if there are any discrepancies or if you need to prove payment dates for penalty calculations. Sorry you're dealing with this - definitely time to find a new CPA who actually responds to their clients!

From my experience, track EVERYTHING expense-wise. When I started contracting for a Japanese company last year, I didn't realize how many legitimate business deductions I could take. Internet, portion of rent/mortgage for home office (if you have dedicated workspace), computer equipment, software subscriptions, professional development courses, even part of your cell phone bill if you use it for work. It all adds up!

One thing I haven't seen mentioned yet is keeping detailed records of all your communications and contracts with the Dutch company. Since this is cross-border income, you'll want to maintain clear documentation showing: 1. Your contractor agreement/statement of work 2. Invoices you send them (even if they don't require formal invoicing) 3. Payment records showing the USD amounts and dates 4. Any correspondence about the work arrangement This documentation will be crucial if the IRS ever has questions about the nature of your income or work relationship. It helps establish that you're truly an independent contractor rather than an employee (which could have different tax implications). Also, since you mentioned money is tight, consider setting up a separate business checking account for this income. It makes tracking much easier come tax time and looks more professional. Many credit unions offer free business checking accounts for small businesses. The 30-35% rule mentioned earlier is solid advice, but in your first year you might want to err on the side of setting aside closer to 35-40% until you get a feel for your actual tax liability after deductions.

Quick question - does anyone know if the address is different if you're filing 843 for something OTHER than Social Security overpayment? I need to submit one for a penalty abatement request.

I went through this exact same situation last year with overpaid Social Security taxes from two jobs. The Kansas City address that Muhammad mentioned is correct for New Jersey. One thing I wish someone had told me - make sure to calculate your overpayment carefully before submitting. The Social Security wage base for 2024 was $160,200, so if your combined wages from both employers exceeded that amount, you likely overpaid. The excess Social Security tax rate is 6.2%, so multiply the amount over the wage base by 0.062 to get your refund amount. Also, don't forget to attach a statement explaining why you believe you overpaid - the IRS processes these much faster when they have a clear explanation. I got my refund in about 10 weeks, which was faster than I expected. Good luck!

Has anyone used TurboTax to handle this excess contribution situation? I'm trying to figure out if it walks you through this correctly or if I need something more specialized.

I'm dealing with a similar situation right now - PhD student who made excess Roth IRA contributions because I didn't realize my research fellowship didn't count as earned income. What really helped me was getting organized with all my tax documents first. Make sure your roommate gathers her 1098-T from the university, any 1099-MISC forms for the stipend, and her W-2 from the TA position that was mentioned. Having all these documents in one place makes it much easier to calculate exactly how much she can legitimately contribute based on her actual earned income. I'd also suggest she call her IRA provider (Fidelity, Vanguard, etc.) directly to ask about their process for "return of excess contributions." Each company has slightly different procedures and timelines, so getting the specifics from them upfront can save a lot of back-and-forth later. Most of them are pretty used to handling this situation with grad students!

3 Has anyone successfully e-filed a Form 843 for excess FICA? All the instructions I'm seeing talk about mailing it, but I'd rather submit electronically if possible.

I just went through this same process a few months ago with my wife's excess FICA situation. She worked for two different companies that were subsidiaries of the same parent company, and we ended up with about $2,100 in excess withholdings. The key thing I learned is that you absolutely must include a detailed explanation in Section 7 of Form 843 about WHY you have excess FICA. Don't just write "multiple employers" - be specific. I wrote something like "Taxpayer was employed by three separate entities (Company A, Company B, Company C) that are subsidiaries of the same parent company. Each entity withheld FICA taxes separately, resulting in total withholdings exceeding the 2024 Social Security wage base limit of $168,600." Also, make sure you're calculating the excess correctly. For 2024, the Social Security tax rate is 6.2% on wages up to $168,600. So if your husband earned more than $168,600 total across all three companies, you should only pay $10,453.20 in Social Security taxes ($168,600 × 6.2%). Anything beyond that is excess and refundable. Medicare tax doesn't have a wage base limit, so you can't claim excess Medicare tax unless it's the additional 0.9% Medicare tax on high earners. Our refund took about 9 weeks to process, and we got the full amount back with no issues.