I went through this exact same nightmare last year! My employer messed up my state withholding too and I was so stressed about getting it right. Here's what I learned: You definitely need to enter BOTH forms in TurboTax. Don't delete the original W-2 info - the software needs to see the complete picture. When you get to the W-2C section, TurboTax will walk you through entering the corrections and it handles all the math automatically. One thing that really helped me was printing out both forms and highlighting the differences before I started entering anything. Made it way easier to spot what actually changed. Also, double-check your state returns after entering everything - sometimes the software doesn't automatically create the correct state return if there were major changes to state withholding. You're doing the right thing by being careful about this. The IRS actually expects corrections like this and as long as you report everything properly using both forms, you'll be fine. Since you already filed the extension, you have plenty of time to get it right!

I actually just dealt with this exact situation a few weeks ago! My employer issued a W-2C because they had incorrectly reported my 401k contributions, and I was panicking about how to handle it properly. Here's what worked for me: In TurboTax, you'll enter your original W-2 information first, just like normal. Then when you get to the section about additional W-2s or corrections, there's an option specifically for W-2C forms. The software will ask you to enter the information from both the "previously reported" and "correct information" columns, and it automatically calculates the adjustments. The key thing I learned is that you don't replace anything - you're essentially telling TurboTax "here's what was originally reported, and here's what it should have been." The software does all the math to figure out the net effect on your taxes. For your state tax issue specifically, make sure you review your state returns after entering everything. When I entered my W-2C, TurboTax automatically updated my state calculations, but I had to double-check that it created the right state returns for both states involved. Don't stress too much about this - W-2C corrections are actually pretty common and the IRS deals with them all the time. Since you filed an extension, you have until October to get it sorted out correctly. Better to take your time now than deal with amendments later!

Just a quick tip - if all else fails, you can always print and mail your return. I know it's old school, but sometimes it's the easiest solution when dealing with electronic filing issues.

I went through this exact same nightmare last year! The confusion between IP PINs and self-selected PINs is so frustrating because the IRS and tax software companies don't explain the difference clearly. Here's what I learned: Your 6-digit IP PIN is correct and you DO need to use it when filing. But that 5-digit PIN your software is asking for is probably the self-selected PIN you created when you first set up your account with that tax software (sometimes called an e-file PIN). Check your email from when you first registered - you might have created a 5-digit PIN back then. For the AGI issue, definitely use the transcript amount ($58,750). The IRS makes adjustments during processing that create differences between your filed return and their records. When they ask for "prior year AGI" for verification, they want what's in their system, not what's on your paper copy. One more tip - if your software keeps rejecting the IP PIN, make sure you're entering it in the right field. Some software has separate fields for "Identity Protection PIN" and "Electronic Filing PIN" and people mix them up all the time.

Has anyone with a similar situation looked into how the QBI phase-out thresholds might affect this decision? As a physician, OP is in a specified service trade or business, so QBI phases out at higher income levels. Wondering if structuring as S-corp vs sole prop affects how those thresholds are calculated.

This is a great discussion! I'm actually a tax professional who works with a lot of physicians in similar situations. A few additional considerations that might help with your decision: 1. **State taxes matter**: If you're in a state with high income taxes, the S-corp structure might provide additional benefits since you'll avoid state income tax on the self-employment tax portion. 2. **Bookkeeping complexity**: S-corps require more formal bookkeeping, payroll processing, and quarterly filings. Make sure to factor in these additional costs when comparing structures. 3. **Timing flexibility**: With a sole prop, you have more flexibility in when you recognize income and expenses. With an S-corp, you're locked into paying yourself that reasonable compensation throughout the year. 4. **Future scalability**: If you plan to expand your moonlighting or add employees, an S-corp structure might be easier to scale. Given your numbers ($200k W-2 + $150k business income), you're likely in the QBI phase-out range, which actually makes the S-corp structure more attractive since you'll get less QBI benefit anyway. The self-employment tax savings of roughly $11,475 on $75k of distributions would probably outweigh the reduced QBI deduction. Have you considered whether your employer has any restrictions on outside business activities that might affect your choice of structure?

One thing nobody's mentioned yet - if you're considering withdrawing from your Roth IRA because you need funds, make sure you've exhausted other options first. Retirement money should really be a last resort. Also, remember that while you can withdraw contributions anytime, if you take out earnings before age 59½ (with some exceptions), you'll pay taxes PLUS a 10% penalty on those earnings. And once you take money out, you can't put extra back in to "make up" for it beyond your annual contribution limits.

A trick I learned from my accountant - if you can't figure out the contribution vs earnings split from your records, look at your Form 5498s from previous years. The IRS gets these forms from your plan administrators showing your contributions each year. You can request wage and income transcripts from the IRS that include these forms going back several years. Might save you some headache if you can't get the info from Fidelity directly.

I'm using FreeTaxUSA instead of turbotax this year to save some $$. Anyone know how to enter form 3921 info there? Their interface is different and I'm not seeing any specific section for ISO exercises.

Just wanted to add another perspective here - I went through this same situation last year with my ISO exercise. One thing that really helped me was creating a simple spreadsheet to track all the key dates and numbers from Form 3921. I included the grant date, exercise date, number of shares, strike price, and fair market value at exercise. This made it much easier when I got to the tax software because I had everything organized in one place. Also, don't forget that you'll need to keep detailed records of these transactions for future years too. When you eventually sell the shares, you'll need all this info to calculate your cost basis correctly. The AMT calculation can be scary, but in many cases the impact isn't as bad as you might think, especially if your bargain element isn't huge. Just make sure you're using the right forms - you'll likely need Form 6251 if AMT does apply to your situation.