
Instant visual diffing between websites

Keeper Tax
Deductions+
NoTaxOnOvertimeCalculator.net
Analyze My Income
TaxSlayer.com
nerdwallet
Everlance
Free tax optimization calculator for U.S. W-2 employees and self-employed business owners. Find missed deductions, compare LLC vs S-Corp, and see what you could save by maxing 401(k), IRA, and HSA contributions.

Website, pricing, platforms and company facts side by side.
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| Website | diffee.me | deductsy.com |
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What each product offers, as listed by its team.


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As answered by people managing Diffee and Deductsy.
Deductsy's answer:
React, Vite, TypeScript
Deductsy's answer:
Completely free, no signup required. It doesn't just file your taxes — it shows you exactly what deductions you're missing and how to maximize your strategy before you ever sit down with your accountant.
Deductsy's answer:
Most tax tools charge you or push you toward paid services. Deductsy is free, transparent, and built by someone who was frustrated with the same problem. No upsells, no gatekeeping — just real numbers.
Deductsy's answer:
W-2 employees, freelancers, and landlords who suspect they're overpaying on taxes but don't know where to start and want to be educated on how to optimize their taxes to maximal
Deductsy's answer:
Built out of personal frustration. I hired good accountants and still felt like I wasn't getting the full picture on deductions. So I built the tool I wished existed — for myself first, then opened it up for everyone.
Deductsy's answer:
W-2 employees optimizing annual tax strategy Freelancers and independent contractors Landlords and rental property owners
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