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Serene Snow

How many allowances should I claim on my W4 form with 3 kids and non-working spouse?

I'm pretty confused about filling out my W4 and could use some guidance. I've tried using the tax estimator calculator but don't have all my exact information handy. My situation: I'm married with 3 children, my wife doesn't work, and we pay around $1350 monthly for our mortgage. I think I want to claim 4 allowances since I don't mind owing a small amount at tax time. From what I understand, the updated W4 automatically gives you 2 allowances when you fill it out normally. So does that mean to get to 4 allowances, I should just put $8600 in section 4b? But then I read something else saying that for someone married with 3 kids, filling out the form normally would automatically give me 3 allowances? In that case, would I only need to put $4300 in section 4b to reach 4 allowances? Really confused about this whole allowance thing and would appreciate any help figuring this out!

The new W4 form doesn't actually use "allowances" anymore - that system was replaced in 2020 with a different approach. The current W4 has you claim tax credits and deductions directly rather than converting them to allowances. For your situation (married, 3 kids, non-working spouse), here's what you should do: First, check "Married filing jointly" in Step 1. Then in Step 2, you can skip this since you only have one job. For Step 3, you'll claim your children by multiplying $2000 by 3 kids, so enter $6000 there. Step 4 is where you can make adjustments - if you want to have less tax withheld (similar to claiming more "allowances" in the old system), you would put an amount in 4b for deductions. Your mortgage interest might be deductible if you itemize, but you'd need to estimate your total itemized deductions versus the standard deduction to know if that's beneficial.

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Romeo Barrett

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So if there are no more allowances, how do I make sure I'm not getting too much withheld? With the old system it was easy to understand that more allowances = less withholding. Is there some formula to figure out the equivalent on the new form?

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The new system is actually more straightforward once you get used to it. Instead of the abstract "allowances" concept, you directly enter dollar amounts. To reduce withholding (equivalent to more allowances), you can add deductions in Step 4b. A rough estimate is that each $4,300 in deductions is similar to an additional "allowance" in the old system. So if you want the equivalent of 4 allowances, and the standard parts of the form already give you the equivalent of 3 (your filing status plus child credits), you could add about $4,300 in Step 4b. But remember, this is just a very rough conversion - the new system is designed to be more accurate when you enter your actual expected deductions.

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Marina Hendrix

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Hey, I had similar confusion with the W4 and found this amazing AI tool that helped clear everything up. Check out https://taxr.ai - it analyzes your specific tax situation and gives you personalized guidance on how to fill out your W4 to get the results you want. I uploaded a picture of my old W4 and it explained exactly what I needed to do with the new form to get the same outcome. The best part is it explains everything in plain English and shows you which boxes to fill out based on your specific situation. No more guessing about allowances or trying to convert old rules to the new system.

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Justin Trejo

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Does it work for more complicated situations? I have a side business and rental property income on top of my regular job. The W4 calculator on the IRS site always seems to be way off for me.

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Alana Willis

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I'm skeptical about using some random AI for tax advice. How do you know it's giving accurate information? The IRS changes rules all the time and I'd be worried about getting bad advice.

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Marina Hendrix

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It absolutely works for complex situations! The system is built to handle multiple income streams and will guide you through accounting for side business and rental income on your W4. It's much more intuitive than the IRS calculator and gives specific instructions for your situation. As for accuracy concerns, I completely understand being cautious. What impressed me was that the tool references specific IRS publications and tax code sections when explaining its recommendations. It's regularly updated with the latest tax rules, and you can even ask it to explain how it arrived at specific numbers. I've double-checked some of its recommendations with tax publications and found it to be spot-on.

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Justin Trejo

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Just wanted to follow up - I tried taxr.ai after asking about it and WOW! It really did handle my complicated situation with my side business and rental income. It broke down exactly how much extra withholding I should add on line 4c to cover my additional income, and explained how to account for business expenses that would reduce what I need to withhold. The system actually showed me that I've been overwithholding by about $4,300 annually! It gave me specific numbers to put on my new W4 that would keep me from getting a huge refund while ensuring I don't underpay. Seriously worth checking out if you're confused about the new W4 system.

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Tyler Murphy

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Sara Unger

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Wait, so what does this service actually do? Does it just call the IRS for you? I don't understand how that would help me get through faster than calling myself.

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Alana Willis

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Sounds like a scam to me. There's no way to "skip the line" with the IRS. And who knows what info you're giving to this random company. I'll stick with waiting on hold for 3 hours like everyone else.

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Tyler Murphy

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Alana Willis

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I need to eat my words. After dismissing that Claimyr service as a scam, I got absolutely nowhere trying to reach the IRS myself for a week straight. Out of desperation, I finally tried it - and I was connected to an actual IRS agent in 15 minutes. The agent cleared up my W4 confusion completely. For my situation (similar to OP with 3 kids), they explained that the child tax credits are automatically accounted for in Step 3, and I needed to use Step 4 to adjust for my mortgage interest deduction. They also explained why the "allowances" concept is gone and how the new system actually gives me more control. I'm still shocked at how fast I got through compared to my previous attempts. Saved me literally hours of frustration.

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One thing nobody's mentioned yet is that you can use the IRS Tax Withholding Estimator online. It's actually pretty good now and will tell you exactly what to put on each line of the W4. Just google "IRS Tax Withholding Estimator" and it should be the first result. You'll need your most recent paystub and an estimate of your annual income, but it's worth the effort. It will account for your kids, filing status, and even your mortgage interest if you plan to itemize deductions.

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Freya Ross

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I tried that estimator and it kept giving me weird results. It told me to put like $500 in extra withholding every paycheck which seemed way too high. Did anyone else have problems with it?

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The estimator can give strange results if you're not entering your information consistently. A common mistake is entering year-to-date income information that doesn't align with the pay frequency you selected. If it's telling you to withhold an extra $500 per paycheck, double-check that you're entering your annual salary correctly and that you've selected the right pay frequency (bi-weekly, monthly, etc.). Also make sure you're entering your YTD withholding correctly from your paystub. The estimator is actually quite accurate when the inputs are correct, but it's very sensitive to inconsistent information.

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Leslie Parker

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Remember that your W4 settings can be changed throughout the year if needed! I usually start conservative (withhold a bit more) at the beginning of the year, then around September I'll check where I stand and adjust if I'm over-withholding.

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Sergio Neal

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Do you actually have to submit a new W4 form every time you want to make changes? Seems like a hassle to keep bothering HR.

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Yes, you do need to submit a new W4 form each time you want to make changes. Most HR departments are used to this though - it's pretty common for people to adjust their withholding throughout the year as their circumstances change. You can usually just email or drop off the new form, and most payroll systems can implement the changes for the next pay period. It's really not as much of a hassle as it seems, and it's worth it to avoid big surprises at tax time!

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Just to add some perspective from someone who's been through this transition - the new W4 system is actually much better once you understand it, even though it seems confusing at first. For your specific situation (married, 3 kids, non-working spouse), here's a simple approach: Fill out Steps 1-3 normally (married filing jointly, claim your 3 children for $6,000 in Step 3). Then for Step 4, if you want less withholding, you can estimate your itemized deductions. With a $1,350 mortgage payment, you're probably paying around $16,000+ annually in mortgage interest, which along with state/local taxes might put you above the standard deduction ($27,700 for married filing jointly in 2024). If you're comfortable owing a small amount, you could put something like $5,000-8,000 in Step 4b as an estimate of deductions above the standard deduction. This would reduce your withholding similar to claiming additional allowances in the old system. Start conservatively and adjust later in the year if needed!

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This is really helpful! I like the approach of starting conservatively and adjusting later. One question though - how do I know if my mortgage interest plus other deductions will actually exceed the standard deduction? Is there an easy way to estimate this without doing a full tax calculation? I don't want to put too much in 4b and end up owing a lot more than I'm comfortable with.

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Lucas Adams

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Great question! Here's a quick way to estimate if you'll exceed the standard deduction: Your mortgage interest is probably around $12,000-15,000 annually based on your payment amount. Add your state and local taxes (property taxes plus state income tax, capped at $10,000 total). If you have significant charitable donations, add those too. For most people with a $1,350 mortgage payment, you're looking at roughly $20,000-25,000 in potential itemized deductions. Since the standard deduction for married filing jointly is $27,700 in 2024, you might not actually benefit from itemizing unless you have substantial charitable giving or other deductions. My suggestion: Start by just filling out Steps 1-3 normally without adding anything to Step 4b. See how your first few paychecks look, then use the IRS withholding calculator mid-year to fine-tune. This way you avoid the risk of under-withholding while you figure out your actual deduction situation.

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As someone who recently went through this same confusion, I can share what finally clicked for me. The key insight is that the new W4 is designed to be more precise than the old allowance system, but it requires you to think differently. For your situation, here's what I'd recommend: Start with the basics - married filing jointly in Step 1, skip Step 2 since you're the only worker, and definitely claim your $6,000 for three kids in Step 3. That's already going to significantly reduce your withholding compared to someone without children. For Step 4, here's the thing about your mortgage - with a $1,350 monthly payment, you're likely paying around $12,000-14,000 in interest annually. However, with the current standard deduction being $27,700 for married filing jointly, you'd need over $27,700 in total itemized deductions to benefit from itemizing. Unless you have high state taxes, significant charitable donations, or other major deductions, you'll probably take the standard deduction anyway. My advice? Start by filling out just Steps 1-3 and see how your paychecks look. The child tax credits alone will reduce your withholding substantially. You can always adjust later if you're getting too big of a refund. This approach has worked well for me and eliminates the guesswork about deductions you may not even use.

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Ethan Taylor

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This is exactly the kind of step-by-step guidance I was hoping to find! I really appreciate you breaking down the mortgage interest calculation - I had no idea that with the higher standard deduction, I might not even benefit from itemizing despite having a mortgage. Your approach of starting with just Steps 1-3 makes so much sense. I was getting overwhelmed trying to figure out all the deductions upfront when the child tax credits alone will probably get me close to where I want to be. I think I'll follow your advice and fill out the basic form first, then check my paychecks after a month or two to see if I need to make adjustments. One follow-up question - when you say "see how your paychecks look," what should I be comparing them to? Should I be looking at how much federal tax is being withheld compared to my previous W4, or is there a better way to gauge if I'm on track?

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Jacob Smithson

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Great question about evaluating your paychecks! Here's what I look for: First, calculate what percentage of your gross pay is being withheld for federal taxes - this gives you a baseline. For someone in your situation (married, 3 kids, likely in the 12% or 22% tax bracket), you'll probably want around 8-12% of your gross pay going to federal withholding. You can also do a quick annual projection: multiply your per-paycheck federal withholding by the number of pay periods in a year, then compare that to what you roughly expect your tax liability to be. There are simple tax calculators online that can give you a ballpark estimate. The other thing I watch for is consistency with previous years if your income is similar. If you used to get a $2,000 refund and now you're on track for a $4,000 refund with the new W4, you know you can probably reduce withholding a bit. Don't stress too much about getting it perfect right away - the beauty of the new system is that it's easier to make mid-year adjustments when you have real data to work with!

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Harmony Love

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I went through this exact same confusion last year! The transition from allowances to the new W4 system really threw me off too. After reading through all these great responses, I want to add one more perspective that might help. Since you mentioned you don't mind owing a small amount at tax time, here's what worked for me in a similar situation: I filled out Steps 1-3 exactly as everyone suggested (married filing jointly, $6,000 for three kids in Step 3), but then I added about $2,000 in Step 4b to reduce my withholding slightly. My reasoning was that with three kids, the child tax credits are substantial ($6,000 total), but I wanted to ensure I wasn't over-withholding. The $2,000 in 4b was conservative enough that I wouldn't risk a big tax bill, but it reduced my withholding by roughly $150-200 per month, which felt right. After a full year with this setup, I ended up owing about $300 at tax time - exactly the small amount I was comfortable with. The key is that you can always adjust mid-year if your first few paychecks show you're still over-withholding. One last tip: keep your last paystub from your old W4 setting so you can compare the federal withholding amounts. That gave me confidence I was heading in the right direction!

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This is really practical advice! I love that you kept your old paystub for comparison - that's such a smart way to gauge whether the changes are working. Your approach of adding $2,000 in Step 4b seems like a perfect middle ground between being too conservative and too aggressive. I'm curious - when you say you ended up owing about $300, was that pretty consistent with what you owed in previous years with the old W4 system? I'm trying to get a sense of whether the new system naturally results in similar outcomes or if it tends to withhold more/less than the old allowance method. Also, did you find that your monthly take-home increased by roughly that $150-200 you mentioned? I'm trying to figure out if the math works out as predictably as it seems.

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Luca Marino

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I'm dealing with a very similar situation and this thread has been incredibly helpful! I'm also married with 3 kids and a non-working spouse, but I've been putting off updating my W4 because I was so confused about the new system. Reading through everyone's explanations, I think I finally understand that the "allowances" concept is completely gone and I need to stop trying to convert my old setup. The advice about starting with just Steps 1-3 (married filing jointly + $6,000 for the kids) and then monitoring my paychecks makes so much sense. One thing I'm still wondering about - for those of you who made the transition, did you notice a significant change in your refund amounts compared to previous years? I used to consistently get around $1,500 back each year with my old W4 setup, and I'm trying to figure out if I should expect something similar or if the new system tends to be more or less accurate in general. Also, has anyone had success using both the IRS withholding estimator AND one of those AI tools mentioned earlier? I'm thinking of trying both approaches to double-check my math before submitting my new W4.

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