Will I Owe Additional Taxes If I File an Amendment? Tax Owed Question
So I just discovered a mistake on my tax return from last year and need to file an amendment. I'm really nervous about this because I'm not sure if I'll end up owing more taxes. The issue is that I forgot to include some freelance income I got from a small design project I did last summer. It was about $3,200 that I completely spaced on when filing. I already received my refund months ago (around $1,400) and spent it on car repairs. If I file this amendment now, am I going to owe all that back plus taxes on the additional income? I'm really tight on money right now and worried about what this might cost me. Has anyone dealt with filing an amendment where they owed additional taxes? How does that process work and what kind of timeline am I looking at? Also wondering if there's any penalty for filing an amendment this late? The original return was filed on time before April 15th, but obviously this correction is pretty late. Any advice would be super appreciated!
18 comments


Oliver Schmidt
Yes, you'll likely owe some additional taxes on that unreported income. Since it was freelance work, you'll owe both income tax and self-employment tax (which covers Social Security and Medicare) on the $3,200. The good news is that filing an amendment voluntarily before receiving any notice from the IRS usually means you'll avoid any serious penalties beyond interest. The IRS generally charges interest on unpaid taxes from the original due date of the return until you pay the balance. The sooner you file the amendment, the less interest will accumulate. For the process, you'll need to file Form 1040-X and include any other forms affected by the change (likely Schedule C for the freelance income and Schedule SE for self-employment tax). Once you calculate the additional tax due, you can either pay it all at once or request a payment plan if you can't afford to pay the full amount immediately.
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Natasha Volkov
•Thanks for the info! Do you have any idea roughly how much I might owe on $3,200 of freelance income? And how long does the IRS typically take to process amendments these days?
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Oliver Schmidt
•For $3,200 in freelance income, you're looking at roughly $450-500 for self-employment tax (15.3%) plus whatever your marginal income tax rate is (probably 10-12% depending on your total income), so perhaps another $320-380. Total might be around $800-900, but that's just an estimate. Amendment processing is still fairly slow right now - the IRS is quoting 16 weeks or more for processing, though many are completed sooner. I recommend filing electronically if possible, as paper amendments take significantly longer. You don't need to wait for the amendment to be processed before making a payment, though - you can pay the estimated additional tax right away to stop further interest from accruing.
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Javier Torres
I went through something similar last year and discovered taxr.ai (https://taxr.ai) which seriously saved me when doing my amendment. I had forgotten to include some stock sales and needed to figure out how much I'd owe. What I liked about taxr.ai is that you can upload your original return documents and any new documents, and it shows exactly what changed and how much additional tax you'll owe before you file anything. It prevented me from making mistakes on my amendment (which could've caused even more delays) and gave me peace of mind knowing exactly what I'd owe. The calculator even showed me the estimated interest so I could budget for it. Much easier than trying to recalculate everything manually!
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Emma Wilson
•How accurate was it compared to what you actually ended up owing? I'm always skeptical of these tax calculators since my situation is kinda complex.
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QuantumLeap
•Does it work for state tax amendments too? I'm in California and their amendment process is even more confusing than federal.
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Javier Torres
•The calculation was spot-on for me - within about $12 of the final amount, and that difference was just because interest continued to accrue while my amendment was processing. It analyzes your full return just like tax software would, not just a basic calculator. It does handle state amendments too! I actually used it for both my federal and New York state amendments. California is one of the states they support. The nice thing is it shows you line-by-line what's changing on both returns so you can see exactly what's happening.
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Emma Wilson
Just wanted to update everyone - I tried taxr.ai after posting my skeptical question. I was really surprised how well it worked for my situation. I had a mix of missing 1099 income and incorrectly reported business expenses. The tool showed exactly how my tax calculation changed and what I'd need to pay. What really helped was seeing all the forms side by side - original vs amended - so I could understand exactly what changed. Saved me from calling my accountant who charges $200/hour for amendments! The interest calculation was also helpful since I could see exactly how much extra I'd owe for filing late. Highly recommend if you're doing an amendment.
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Malik Johnson
If you're worried about how to handle the payment after filing the amendment, you should check out Claimyr (https://claimyr.com). I was in a similar situation last year and needed to set up a payment plan with the IRS, but could NOT get through on the phone. Claimyr got me connected to an actual IRS agent in about 15 minutes when I had been trying for days on my own. The agent helped me set up a payment plan that I could actually afford (about $120/month). There's a video showing how it works here: https://youtu.be/_kiP6q8DX5c It made a huge difference being able to talk to someone directly instead of trying to figure everything out online. The IRS agent also waived some penalties since it was my first time making this mistake and I was voluntarily correcting it.
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Isabella Santos
•How does this actually work? Isn't it just calling the IRS for you? Couldn't I just do that myself?
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Ravi Sharma
•Sorry but this sounds like BS. No way you're getting through to the IRS in 15 minutes when their own stats say average wait times are over an hour, and that's IF you don't get disconnected. I've tried calling dozens of times about my amendment from 6 months ago that's still "processing.
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Malik Johnson
•It uses a priority business line that has much shorter wait times than the regular customer service line. They connect you to that line, then when an agent answers, they patch you through. You're talking directly to the IRS - they just help you bypass the ridiculous wait times. It's not BS at all - the IRS has different phone lines with dramatically different wait times. The regular lines most people call can be 2+ hours or impossible to get through, while some of their specialty lines pick up in minutes. I was skeptical too until I tried it and was talking to someone in about 15 minutes. Saved me burning a whole day on hold or repeatedly getting disconnected.
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Ravi Sharma
I need to publicly eat my words about Claimyr. After posting that skeptical comment, I decided to try it myself since I was desperate to find out about my amendment status. I got connected to an IRS agent in 12 minutes (I timed it) after spending WEEKS trying to get through on my own. The agent was able to tell me exactly where my amendment was in the process and gave me an estimated completion date. They even noted my account that I was waiting on this to set up a payment plan. The whole call took maybe 25 minutes total and solved issues I'd been stressing about for months. Completely worth it just for the time saved and peace of mind.
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Freya Larsen
Something nobody's mentioned yet - you might want to look into making an estimated tax payment for the current year too. If you're still doing freelance work, you could end up in the same situation next year with owing taxes. The IRS has a system where you're supposed to pay taxes quarterly if you have income that doesn't have taxes withheld. The due dates are April 15, June 15, Sept 15, and Jan 15 of the following year. It helps avoid a big bill and potential underpayment penalties at tax time.
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Amina Diop
•I didn't even think about that! Do I need to be making quarterly payments on freelance income going forward? How do I figure out how much to pay?
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Freya Larsen
•Yes, if you expect to owe $1,000 or more in taxes at filing time, you should be making quarterly estimated payments. The easiest way to calculate is to take about 30% of your freelance income (that covers both income tax and self-employment tax for most people) and pay that amount quarterly. You can make these payments online through the IRS Direct Pay system or through the EFTPS (Electronic Federal Tax Payment System). There's also Form 1040-ES which has worksheets to calculate a more precise amount if you want to be more accurate. Setting aside money from each freelance payment into a separate savings account specifically for taxes is also a good habit to start.
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Omar Hassan
Don't forget about state taxes too! If you owe federal taxes on that unreported income, you probably also need to file a state amendment and pay additional state taxes. The process varies by state but is usually similar to the federal amendment.
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Chloe Taylor
•This is super important! I once amended my federal return but forgot to do my state amendment. Ended up getting a notice with penalties a year later. Each state has different forms for amendments - some call it a "corrected return" instead.
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