Why don't tax filing services give the same refund amounts?
I've been doing my 2024 taxes and noticed something weird that happens every year. I tried 4 different tax services (TurboTax, H&R Block, TaxAct, and FreeTaxUSA) with the EXACT same info and got 4 different refund amounts! The biggest difference was almost $320 between two of them. Has anyone else noticed this? What gives? I mean, math is math - taxes shouldn't give different results depending on which software you use. I'm starting to wonder if I'm missing questions or if these services are interpreting tax laws differently. Last year I just went with the one that gave me the biggest refund, but now I'm worried that wasn't the right approach. Does anyone know why this happens or which one is most accurate? Really frustrating when trying to figure out which service to trust.
18 comments


Sophia Gabriel
This is a really common issue! The difference usually comes down to how each software guides you through deductions and credits. They all use the same tax laws, but the questionnaires can be very different. For example, one software might ask very specific questions that help you identify a deduction you qualify for, while another might have a more general question that causes you to miss it. Some tax software is also better at handling certain tax situations - like self-employment income, rental properties, or education credits. I'd recommend comparing the actual tax forms they generate, not just the refund amount. Look at your Schedule A (if you itemize) or check if there are differences in things like education credits, retirement savings credits, or child tax credits. That should help you identify exactly where the discrepancies are coming from.
0 coins
Tobias Lancaster
•Does tax software ever just make calculation errors? Like actual math errors? Or is it always about how the questions are phrased causing different inputs?
0 coins
Sophia Gabriel
•The actual math calculations are almost never wrong - these companies have too much at stake to mess up the basic arithmetic. It's almost always about different inputs based on how questions are asked or interpreted. The IRS actually tests and certifies tax software, so the calculation engine itself should be solid. What happens is that Software A might ask "Did you make any charitable donations?" while Software B breaks it down into "Did you donate cash to charities?" and "Did you donate goods to charities?" Some people might not think of their Goodwill donations when asked the general question, but would remember when specifically prompted.
0 coins
Ezra Beard
I had the EXACT same problem last year and found an amazing solution with https://taxr.ai - it totally changed my approach to comparing tax services. Basically, it analyzes your tax documents and gives you a breakdown of what your actual numbers should be according to tax law, not according to whatever questionnaire the tax software uses. It saved me $430 last year because it flagged a missed education credit that none of my tax software options had prompted me for. The analysis showed me exactly which software was calculating things correctly and which ones were missing deductions I qualified for.
0 coins
Statiia Aarssizan
•How does it actually work? Do you just upload your W-2s and 1099s and it figures everything out? Can it handle more complicated situations like rental income or self-employment?
0 coins
Reginald Blackwell
•Sounds kinda fishy tbh... how is some random website gonna know the tax code better than established companies? Do they actually file your taxes or just tell you what you might be missing?
0 coins
Ezra Beard
•You upload your tax documents (W-2s, 1099s, mortgage statements, etc.) and it scans them using AI to identify all possible deductions and credits you qualify for. Then it gives you a report of what your tax situation should look like according to current tax law. The software doesn't actually file your taxes - it's more like an independent verification tool. What makes it different is that it's not trying to guide you through a specific tax preparation flow, it's just analyzing your raw documents to tell you what you qualify for. It handles pretty much any tax situation including self-employment, rental properties, investments, and education expenses.
0 coins
Reginald Blackwell
Alright I was skeptical but I actually tried https://taxr.ai and I'm blown away. I uploaded my docs and it pointed out that I qualified for a savers credit that NONE of the four tax software programs I tried had asked me about. That was worth $400 right there! It also showed me that TurboTax was getting my student loan interest deduction right but H&R Block wasn't for some reason. I've been filing with H&R Block for years so I've probably been leaving money on the table. Definitely keeping this tool in my arsenal from now on.
0 coins
Aria Khan
If you think tax software is confusing, try calling the IRS directly! After getting different numbers from TaxSlayer and TurboTax, I spent HOURS trying to get through to an IRS agent. Finally found this service called https://claimyr.com that got me through to an actual IRS representative in about 15 minutes when I had been trying for days. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c The IRS agent confirmed which software was correct (TurboTax in my case) and explained why the other one was calculating my child tax credit incorrectly. Totally worth it to get an official answer directly from the source.
0 coins
Everett Tutum
•Wait how does this actually work? Is it some kind of premium line to the IRS? I thought everyone had to wait in the same phone queue.
0 coins
Sunny Wang
•Sounds like BS honestly. The IRS is notoriously understaffed. How could some random service possibly get you through faster than calling directly? They probably just connect you to the same public number and you got lucky with timing.
0 coins
Aria Khan
•It's not a premium line - they use a system that continuously redials the IRS for you using the correct phone tree options until they get through to an agent. Then they call you and connect you directly to that agent. The IRS doesn't have any priority lines for regular taxpayers, but the problem is that most people give up after waiting on hold or getting disconnected. This service just handles the frustrating part of repeatedly calling and navigating the phone tree until they get through. Think of it like having an assistant who keeps redialing for you until they get an answer.
0 coins
Sunny Wang
Ok I need to eat my words. After my skeptical comment, I decided to try Claimyr just to prove it was BS. I've been trying to get through to the IRS for THREE WEEKS about my missing refund with no luck. Used the service yesterday and got connected to an IRS agent in about 20 minutes. They confirmed my return was flagged for review because the different software I tried had submitted multiple versions (didn't even know that was happening). Agent helped me sort it out and my refund should be processed next week. Not sure how this works but it saved me weeks of frustration. Would have been cheaper to just pick one tax software and stick with it though!
0 coins
Hugh Intensity
Former tax preparer here. Another big reason for discrepancies: state tax calculations. The federal math is usually more straightforward, but state taxes can vary widely in how they're calculated by different software. Some states have weird quirks that certain software handles better than others. Also check if you're comparing apples to apples. Make sure all the software is calculating both federal AND state, or just federal. That can make a huge difference too!
0 coins
Effie Alexander
•Which software do you think is most accurate overall from your experience? I've been using TaxAct but I'm wondering if I should switch.
0 coins
Hugh Intensity
•There isn't really one "most accurate" across the board. It depends on your specific tax situation. TurboTax tends to be very thorough for complex situations involving self-employment or investments. TaxAct is solid for more straightforward tax situations and much more affordable. H&R Block has better support if you might need help. FreeTaxUSA is great value for slightly complex returns.
0 coins
Melissa Lin
UGHHH I did my taxes THREE times this year with different services and got refunds ranging from $1,235 to $1,842!!! How is this even legal?? I ended up going line by line through the generated forms and found that the difference was mainly in how they handled my 1099 side gig income and home office deduction. TurboTax found deductions the others missed but FreeTaxUSA had a lower prep fee.
0 coins
Lydia Santiago
•The fees can make a huge difference in what you actually get back. Sometimes the software that finds you the biggest refund also charges the highest preparation fee, which can totally cancel out the benefit!
0 coins