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One other thing to consider - has your son checked if his state taxes were also filed? Sometimes people focus on just the federal return but forget they may have also paid state taxes unnecessarily. Make sure to check that too and file the equivalent state form for a refund if applicable!
Good point about state taxes! This varies significantly by state though. When my daughter was in a similar situation, our state (California) had a much lower filing threshold than federal, so she actually did need to file state taxes even though she was exempt from federal. Definitely worth checking the specific requirements for your state.
Be prepared for quite a wait on that refund. My daughter was in exactly this position last year, and while the IRS did approve her Form 843, it took nearly 6 months to process. They're seriously backlogged still. Also, make sure your son doesn't file next year if he's not required to - some tax software automatically reminds previous customers to file again, which could lead to the same issue next year.
One thing nobody's mentioned yet is that while marginal tax rates work as described above, there are other income-based thresholds that DON'T work that way. For example, certain credits and deductions phase out completely once you hit certain income levels. These aren't marginal - they're cliffs where you either qualify or you don't. Also remember that your taxable income isn't the same as your gross income. Contributing to a traditional 401k, HSA, or taking the standard deduction all reduce your taxable income, potentially keeping you in a lower bracket.
That's a great point! Are there any major "cliffs" I should watch out for around the $100k income level? I'm currently putting about 10% into my 401k but wondering if I should increase that to stay under certain thresholds.
Around the $100k level, you might start seeing some phase-outs, but most aren't complete cliffs. Student loan interest deduction starts phasing out at about $75k (single filers) and is completely gone by $90k. The Roth IRA contribution starts phasing out around $125k and is fully eliminated around $140k. Increasing your 401k contribution is almost always a good strategy when you're approaching these thresholds. Not only does it lower your taxable income, but you're also increasing your retirement savings. For 2025, you can contribute up to $23,000 to a 401k if you're under 50, which could significantly reduce your taxable income and potentially keep you under these thresholds.
do any of yall know if the tax calculator on turbotax is any good for figuring out marginal tax stuff? i tried using it but im not sure if its calculating everything right especially with the new tax brackets
TurboTax's calculator is decent for basic estimates, but it doesn't always let you see the breakdown of how your income is taxed across different brackets. I found TaxCaster (by Intuit, same company as TurboTax) gives a more detailed view of the marginal rates. The IRS also has a withholding calculator on their website that's pretty accurate but not very user-friendly.
One thing to keep in mind with Form 1125-A errors is to check if the mistakes affected your Schedule C and subsequently your Schedule SE for self-employment tax. When the IRS makes errors on cost of goods sold, it can cascade through your return and impact multiple calculations. In my experience as a small business owner, it's worth taking the time to recalculate everything carefully before submitting your 1040-X. In particular, make sure your corrected 1125-A properly flows to your Schedule C, which then affects your AGI, any AGI-based credits, and your self-employment tax.
That's a really good point I hadn't considered. If they messed up my COGS on the 1125-A, it definitely would have changed my Schedule C profit and then my self-employment tax on Schedule SE. Should I submit copies of all three forms with my amendment or just the 1125-A?
You should submit the entire amended tax return package, including the corrected 1125-A, Schedule C, Schedule SE, and main 1040 form. This gives the IRS a complete picture of how the corrections flow through your entire return. When preparing your 1040-X, you'll need to show the original figures that were processed, the corrected figures, and the difference between them. Make sure your explanation in Part III clearly traces how the 1125-A errors affected each subsequent form. For example: "The IRS incorrectly transcribed line 2 of Form 1125-A as $8,400 instead of the correct amount of $11,250. This error reduced my Cost of Goods Sold by $2,850, which incorrectly increased my Schedule C profit and subsequently my self-employment tax on Schedule SE." This level of detail helps the IRS follow your calculations and process your amendment more efficiently.
Has anyone here used tax software to prepare their amendment for IRS errors? I'm in a similar situation with Form 1125-A mistakes but wondering if TurboTax or H&R Block can handle this kind of correction effectively.
I used TaxAct to prepare an amended return last year when the IRS messed up my itemized deductions. It worked fine but you have to be very careful. The software doesn't automatically know that you're correcting IRS errors versus changing your own entries. Make sure you use the explanation section to clearly state that you're fixing IRS transcription errors, not changing your original filing.
I'm also in a community property state (Arizona) and had this exact issue with my husband. Here's what we found out after consulting with a CPA who specializes in this area: 1. For community property states, the legally correct way is indeed to split all community income 50/50 on Form 8958 2. For PSLF purposes, this often creates a problem because even though you're filing separately, your spouse's income effectively gets counted in your AGI 3. Some tax preparers (especially chain preparers) don't understand these special rules well What we ultimately did was hire a CPA who specialized in student loan issues to help us identify which of our income was truly separate property vs. community property. There were actually several things we could legally classify as separate property, which helped minimize the impact. Whatever you decide, just make sure both returns are consistent with each other. The biggest red flag for the IRS is when spouses in community property states report inconsistently on MFS returns.
Thank you for sharing! Did you and your spouse both use the same CPA so they could coordinate both of your returns? And did you have any issues with previous years where you might have filed inconsistently?
Yes, we definitely used the same CPA for both returns to ensure consistency. That was key to making sure our community property allocations matched up perfectly. Regarding previous years, we had indeed filed inconsistently for two years (similar to your situation). Our CPA advised that we could either amend those previous returns or simply start filing correctly going forward. Since the difference in our case wasn't enormous and we hadn't been audited, we chose to just file correctly going forward rather than opening up old returns. The CPA mentioned that the statute of limitations for most returns is 3 years, so after that time passes, your risk decreases significantly.
Speaking from personal experience in Texas (another community property state), you really need to be careful here. My wife and I did something similar - she reported only her income, I reported only mine - and we got letters from the IRS about two years later. We ended up having to amend both returns and pay some penalties and interest. The IRS specifically cited our failure to properly allocate community income on Form 8958. If I were you, I'd strongly consider: 1. Having your wife amend her return to properly split community income 2. Filing your return correctly (as the preparer suggests) 3. At minimum, making sure both returns use the SAME methodology The inconsistency between your returns is more likely to trigger questions than both of you doing it the same way, even if that way isn't technically correct.
Anastasia Romanov
I've found that local CPAs who advertise "small business" expertise often lack the specific knowledge for startup equity situations. My first accountant had no idea what an 83(b) election was, and I nearly missed the 30-day window to file! Look for someone who has clients similar to you - other tech founders with venture backing. Ask potential accountants specific questions: "How would you handle tax planning for a potential secondary sale?" or "What documentation do you recommend I maintain for my 83(b) election?" If they give vague answers, move on.
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StellarSurfer
ā¢How much should I expect to pay for a good startup-focused accountant? The quotes I'm getting seem all over the place, from $400 to $3000+ for personal tax prep. Is the higher price worth it?
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Anastasia Romanov
ā¢The price range definitely varies based on complexity and location. If you have multiple equity events, secondary sales, or multi-state filing requirements, expect to be on the higher end of that range. In my experience, paying more for someone with startup expertise has saved me far more than the difference in preparation fees. For context, I paid about $800 for a general CPA my first year, who missed several startup-specific deductions. The next year I paid $2200 for a startup-specialized accountant who saved me over $15,000 through proper equity planning and startup-specific tax strategies. Look at it as an investment - the right accountant should identify tax savings that exceed their fee difference.
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Sean Kelly
Has anybody used one of those big online tax prep companies like H&R Block or TurboTax for startup situations??? I know they have "small business" versions but not sure if they can handle 83b stuff or secondary sales?
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Zara Malik
ā¢Omg please dont. I tried using TurboTax last year for my startup situation and it was a COMPLETE disaster. The software kept getting confused by my 83(b) election and couldn't properly handle the reporting of my partial stock sale. Ended up having to hire a professional anyway to fix all the mistakes and file an amended return. Cost me way more in the end.
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