How is the Kiddie Tax Rate Calculated for Custodial Accounts? Questions about Taxation of Children's Unearned Income
Hi everyone, I've been looking into setting up custodial accounts for my two kids (ages 10 and 13) but I'm confused about the tax implications around unearned income. From what I understand, the first $1,250 is exempt, and the next $1,250 gets taxed at this "kiddie tax" rate (which I can't seem to find specific information on), and anything over $2,500 gets taxed at the parents' marginal rate. My wife and I are in a pretty high tax bracket (35%) and don't qualify for child tax credits anymore. I'm wondering if it would make more financial sense to not claim our children as dependents and just have them file as if they were adults? Would this actually save us money on the investment income in their accounts or is that not allowed? Does the IRS have specific rules about this, or can you choose either approach? Also, I can't seem to find exact info on how the kiddie tax rate is calculated for that middle tier of unearned income between $1,250 and $2,500. Are there specific tax brackets for this, or is it tied to something else? Thanks for any help with this. Tax season is approaching, and I'd like to understand these implications before making any more contributions to their accounts.
19 comments


StarSurfer
The kiddie tax rules can definitely be confusing! Let me clarify how this works. First, the "kiddie tax" applies to children under 19 (or full-time students under 24) who have unearned income above a certain threshold. In 2025, the first $1,250 of unearned income is indeed tax-free, and the next $1,250 is taxed at the child's rate (which is typically 10% for most kids with minimal income). To answer your main question - having your children file separately as "non-dependents" won't help you avoid the kiddie tax. The IRS specifically designed these rules to prevent exactly this kind of tax strategy. As long as your children meet the age requirements and don't provide more than half of their own support, the kiddie tax rules apply regardless of whether you claim them as dependents. For that middle tier ($1,250-$2,500), it's simply taxed at the child's own rate, which is usually the lowest bracket (10%) since most kids don't have much earned income. This is actually intended as a benefit - it's only the portion above $2,500 that gets hit with the parents' higher rate.
0 coins
Carmen Reyes
•Thanks for explaining! Quick follow-up - does earned income (like from a summer job) affect how the kiddie tax works on their investment income? My oldest made about $3,000 last summer working at a local shop.
0 coins
StarSurfer
•Yes, earned income definitely factors into this calculation. If your child has earned income, it can actually help reduce the kiddie tax burden. The IRS allows your child to use their own tax brackets for an amount of unearned income equal to the greater of $1,250 or their earned income plus $350. So in your case, if your child earned $3,000 from summer work, they could have up to $3,350 ($3,000 + $350) of unearned income taxed at their rate before the parents' rate kicks in. This is significantly better than the standard $2,500 threshold!
0 coins
Andre Moreau
Just wanted to share my experience - I was in a similar situation last year trying to figure out custodial account taxes for my daughter. I spent hours reading IRS publications and still couldn't make sense of it. I finally tried https://taxr.ai and uploaded all the custodial account statements there. It analyzed everything, explained exactly how the kiddie tax applied in our situation, and showed which portion was exempt, which used my daughter's rate, and which used our marginal rate. The site also explained that while I couldn't avoid the kiddie tax by not claiming her as a dependent, there were still some smart moves we could make with the timing of realizing gains in her account. Saved us a lot in taxes and confusion!
0 coins
Zoe Christodoulou
•Does this work for 529 accounts too? I have both UTMA accounts and 529s for my kids and get completely confused about how each is taxed.
0 coins
Jamal Thompson
•I'm skeptical - how does uploading statements to some website help when the IRS rules are already published? Couldn't you just look up the rules yourself?
0 coins
Andre Moreau
•For 529 accounts, the site explained that qualified withdrawals for education expenses are completely tax-free, which is different from custodial accounts where investment earnings are subject to the kiddie tax. It helped identify which expenses qualified so we could maximize the tax-free benefits. As for looking up the rules yourself - that's exactly what I tried first! The problem is that tax publications are incredibly dense, and the kiddie tax rules interact with several other parts of the tax code in ways that aren't obvious. The site extracted the specific rules that applied to our situation and showed exactly how they affected our numbers.
0 coins
Zoe Christodoulou
Following up on my question about 529 vs custodial accounts - I tried https://taxr.ai after seeing the recommendation here, and wow, it was eye-opening! I uploaded statements from both my kids' UTMA accounts and their 529 plans, and the analysis made the differences crystal clear. The system explained that while the 529 growth is tax-free when used for qualified education expenses, our UTMA accounts were generating enough dividends and capital gains to trigger the kiddie tax. It even calculated exactly how much we'd save by shifting our investment strategy in the custodial accounts to more tax-efficient options until the kids reach age 24. Really helped clarify a confusing situation!
0 coins
Mei Chen
Hey everyone - If you've been trying to reach the IRS to get clarification on the kiddie tax rules, good luck with that. I spent THREE DAYS trying to get through on their phone lines last month. Finally found https://claimyr.com which got me a callback from an actual IRS agent in about 20 minutes. There's a demo video here: https://youtu.be/_kiP6q8DX5c The agent clarified that for 2025, not only do you need to understand the kiddie tax thresholds, but there are specific reporting requirements on Form 8615 that can trigger issues if not filled out correctly. She walked me through the exact process for our family's situation with our three kids' custodial accounts. Would've taken weeks to figure this out on my own!
0 coins
CosmicCadet
•How does this callback thing actually work? The IRS never answers their phones when I call.
0 coins
Liam O'Connor
•Sorry, but this sounds like a scam. Why would you need a third-party service to talk to the IRS? And why would they be able to get through when regular people can't? I'm not buying it.
0 coins
Mei Chen
•The service basically navigates the IRS phone tree for you and waits on hold in your place. When they reach an actual agent, they connect the call to your phone. It works because they have technology that can stay on hold for hours so you don't have to. I was skeptical too before trying it! But here's the thing - the IRS actually does answer calls eventually, but the wait times can be 2-3 hours during tax season. Most people give up before getting through. This service just handles the waiting part. When I got connected to the IRS agent, it was definitely a real IRS employee who verified my identity and everything. Nothing scammy about it - they just saved me from having to sit on hold for hours.
0 coins
Liam O'Connor
I need to apologize to Profile 20 - I was the skeptic who thought that Claimyr service sounded like a scam. Well, I was literally at my wit's end trying to get specific guidance on kiddie tax for my grandchildren's accounts (I'm their guardian), so I gave it a shot. I got a callback from the IRS in about 40 minutes, and the agent walked me through exactly how to handle the custodial accounts on my tax return. She explained that because I'm their legal guardian, the kiddie tax rules apply differently than I thought. This saved me from making a huge mistake on my return! The service actually worked exactly as described. Sorry for being so cynical - sometimes good services do exist!
0 coins
Amara Adeyemi
Another option to consider is investing in growth stocks rather than dividend-paying stocks in your kids' custodial accounts. I did this with my kids' UTMAs and it worked great - since growth stocks generally don't generate much annual income, there's minimal yearly taxation until you sell. This way you can potentially delay the tax impact until they're older than 24 and no longer subject to kiddie tax rules. Just make sure you understand the risk profile - growth stocks can be more volatile than dividend payers.
0 coins
Yuki Nakamura
•Thanks - this is a really interesting strategy! Do you have any suggestions for how to research which stocks or funds would be good for this approach? And how did you time the transition as your kids got older?
0 coins
Amara Adeyemi
•For research, I focused on looking at the "dividend yield" metric - anything under 1% generally means it's a growth-focused investment rather than income-focused. Tech companies and certain sector ETFs (like VGT - Vanguard's tech ETF) can be good options here. As for timing the transition, I started gradually selling small portions of the growth investments each year once my kids hit college age, so they could use some of the money for expenses while still keeping most of it growing. Then once they passed age 24, we developed a more comprehensive plan for either full liquidation or transitioning to a more balanced portfolio depending on their goals. The key is not making one big taxable event if you can avoid it.
0 coins
Giovanni Gallo
Quick tip - be careful about state taxes too! The federal kiddie tax rules are one thing, but some states handle taxation of minor's investment income differently. I found this out the hard way last year when I handled everything correctly for federal but completely missed the state-specific forms.
0 coins
Fatima Al-Mazrouei
•Which state was this in? I'm in California and now I'm worried I've been doing this wrong too!
0 coins
Brandon Parker
This is such a helpful thread! I'm dealing with a similar situation with my 16-year-old's custodial account. One thing I learned from my CPA is that you can also consider using I Bonds (Series I Savings Bonds) for part of your kids' investments. The interest on I Bonds isn't taxed until you cash them out, which means you can potentially defer all the tax consequences until after they turn 24 and are no longer subject to kiddie tax rules. The downside is that I Bonds are limited to $10,000 per person per year and have lower potential returns than stocks, but for the portion of their money that you want to be more conservative with anyway, it's a nice way to avoid the annual kiddie tax hassle entirely. Just another option to consider alongside the growth stock strategy that Amara mentioned!
0 coins