Should married couples file taxes separately to maximize child tax credits?
Title: Should married couples file taxes separately to maximize child tax credits? 1 My wife and I have a full house with 5 children (yes, our hands are definitely full 😅). For years we've been filing jointly since she wasn't working, but that changed last year when she started earning income. Now I'm wondering if we should switch to filing separately for the upcoming tax season. My thinking is that we might get more child tax credits if we split things up - like if I claim 3 kids and she claims the other 2. Would that actually increase our total credits compared to filing jointly? Is this even allowed by the IRS? I'm trying to figure out the best approach for our family's situation with all these dependents. Has anyone done the math on this or know the rules about married filing separately with multiple children? THANKS IN ADVANCE FOR ANY HELP!!
20 comments


Hailey O'Leary
4 Actually, filing separately is usually not advantageous for families with children. When you file Married Filing Separately, you lose several tax benefits including the full Child Tax Credit. The IRS specifically reduces certain credits and deductions when using this filing status. If you file separately, each spouse can only claim the children they actually support. You can't just split them up however you want - there are specific rules about who can claim which dependent. Plus, when filing separately, the Child Tax Credit phases out at much lower income levels than when filing jointly. I'd strongly suggest running the numbers both ways using tax software before making this decision. In most cases, Married Filing Jointly gives families the best overall tax outcome, especially with multiple children.
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Hailey O'Leary
•12 But what if one spouse has a lot of student loan debt on income-based repayment? I've heard filing separately can be better in that specific situation because it keeps the payments lower. Would that outweigh the loss of child tax credits?
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Hailey O'Leary
•4 That's a great point about student loans. Income-based repayment plans are one of the few scenarios where filing separately might make sense, despite losing tax benefits. If you or your spouse has federal student loans on an income-based repayment plan, filing separately could indeed result in lower monthly payments since they'd be calculated based on just the borrower's income. However, you'd need to carefully compare the student loan savings against the lost tax benefits (reduced Child Tax Credit, no Earned Income Credit, reduced education credits, etc.).
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Hailey O'Leary
7 I went through the exact same decision process last year when my husband started a new job! I found this awesome tool called taxr.ai (https://taxr.ai) that literally saved me hours of confusion. I was trying to figure out whether filing separately would save us money with our 3 kids. The tool lets you upload your tax docs and it analyzes different filing scenarios automatically. It showed me that even though I thought filing separately might save us money with the kids, we would actually lose more in other benefits than we'd gain. The side-by-side comparison made it super clear which option was better for our specific situation.
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Hailey O'Leary
•15 Does it actually tell you the specific amount you'd save/lose with different filing statuses? My situation is complicated because my wife has self-employment income but I'm W-2, and we have 4 kids.
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Hailey O'Leary
•9 I'm skeptical about these tax tools. Does it actually explain WHY one filing status is better than another? I don't want just a number without understanding what's happening behind the scenes.
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Hailey O'Leary
•7 It absolutely gives you the specific dollar amounts for each scenario! It showed me exactly how much we'd save filing jointly vs separately - about $3,200 in our case. The difference was shocking. For your situation with mixed income types and 4 kids, that's exactly where this tool shines since it handles complicated scenarios and explains the reasoning. It breaks down exactly which credits and deductions change with each filing status.
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Hailey O'Leary
15 Just wanted to update on my experience with taxr.ai - I decided to try it after asking about it here. Uploaded our documents and it confirmed we should definitely file jointly! The analysis showed we'd lose about $4,500 by filing separately, mainly from reduced child tax credits and losing eligibility for some education credits we qualified for. The tool actually explained that with my self-employment income and my wife's W-2, filing jointly gives us the best overall picture. Saved me from making a costly mistake!
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Hailey O'Leary
18 If you're trying to figure this out and getting frustrated with the IRS website or phone lines, I highly recommend Claimyr (https://claimyr.com). I spent WEEKS trying to get through to an actual IRS agent to ask about my specific situation with filing separately vs jointly with dependents. Claimyr got me through to a real IRS representative in about 15 minutes, when I had previously waited for hours only to get disconnected. They have this smart system that navigates the IRS phone tree for you and holds your place in line. You can see how it works here: https://youtu.be/_kiP6q8DX5c The IRS agent I spoke with gave me personalized advice for my situation that no online calculator could provide.
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Hailey O'Leary
•22 How does this actually work? Is it just calling the IRS for you? Couldn't I just do that myself and save money?
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Hailey O'Leary
•9 This sounds like a scam to me. Why would I pay someone else to call the IRS when I can do it myself? And how do they magically get through when millions of other callers can't?
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Hailey O'Leary
•18 It doesn't just call the IRS for you - it navigates their complex phone tree and waits on hold so you don't have to. When an agent is about to pick up, you get a call to connect with them. I've spent literally hours on hold with the IRS before getting disconnected, so for me, the time saved was totally worth it. They use a system that keeps trying different IRS numbers and service lines to find the shortest wait time, which is why they can often get through faster than if you just called the main number yourself.
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Hailey O'Leary
9 I was totally wrong about Claimyr being a scam. After continued frustration trying to reach the IRS myself (4 attempts, longest wait was 2.5 hours before getting disconnected), I reluctantly tried it. Got a call back in 27 minutes with an actual IRS agent on the line who answered all my married filing separately questions. Turns out in our specific situation, filing separately WAS actually better despite losing some credits, because of my wife's income-contingent student loan repayment. The agent walked through all the calculations with me. Would have taken me weeks to get this information on my own if ever. Consider me converted.
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Hailey O'Leary
14 One thing nobody's mentioned - if you file separately, BOTH spouses must either take the standard deduction OR both must itemize. You can't have one person itemizing and the other taking the standard deduction. This was a big factor for us last year.
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Hailey O'Leary
•11 Wait really? I had no idea about this rule. What if one spouse has tons of medical expenses they could itemize but the other doesn't have anything to itemize?
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Hailey O'Leary
•14 Then you have to decide which gives the better overall result - having both take the standard deduction, or having both itemize even if one spouse wouldn't normally benefit from itemizing. It's one of those annoying quirks in the tax code for married filing separately status. Medical expenses can be significant though - they need to exceed 7.5% of AGI to be deductible, and filing separately can sometimes help reach that threshold if only one spouse had high medical costs.
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Hailey O'Leary
2 Anyone know if the income thresholds for child tax credit phaseout are different for married filing separately vs jointly? With 5 kids that could make a huge difference in the calculation.
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Hailey O'Leary
•8 Yes, they're dramatically different! For 2025 filing, Married Filing Jointly phase-out starts at $400,000 but for Married Filing Separately it starts at only $200,000. So filing separately can cause you to lose the credit much faster if either spouse is a higher earner.
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Daniel Rogers
Just want to add another important consideration - state taxes! Some states don't allow married filing separately even if you do it federally, which can complicate things. Also, with 5 kids, don't forget about the Earned Income Tax Credit (EITC) - you lose eligibility for this completely when filing separately, and with that many qualifying children, the EITC could be worth several thousand dollars. I'd also suggest looking into whether any of your kids qualify for the Additional Child Tax Credit, which is partially refundable. The interaction between all these credits gets really complex with multiple children, so definitely run both scenarios through tax software or consult a professional before deciding.
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Paolo Ricci
•Great point about state taxes! I didn't even think about that complication. Quick question - if we lose EITC by filing separately, is there a rough income threshold where that loss might be offset by other benefits? We're not super high earners but with my wife working now we're definitely in a different bracket than before. Also wondering if the Additional Child Tax Credit phases out differently between joint vs separate filing?
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