展示HN:TakeHome – 自雇人士的有限责任公司与S型公司的税务计算器
我厌倦了在决定是否为我的有限责任公司(LLC)选择S公司时进行粗略的计算,所以我在周末制作了一个计算器。
我找到的大多数工具要么忽略州/城市税,要么收费获取答案,或者需要创建账户才能看到有用的信息。TakeHome完全在您的浏览器中运行(无需注册,无分析,无服务器端存储),并且在您拖动滑块时实时更新每一个数字。
它模拟的内容包括:
- LLC自雇税与S公司W-2工资的FICA税
- QBI扣除(第199A条款)与SSTB逐步淘汰
- 根据SECURE 2.0规则的单人401(k)(传统/罗斯/分割,按年龄段的补缴限额)
- 自雇健康保险扣除
- S公司管理/合规成本比较
- 纽约州所得税、特许税、PTET
- 纽约市UBT(LLC)、GCT(S公司)、PIT及IT-219抵免
您可以保存场景,比较任意两个场景(它会准确显示哪些输入不同以及对美元的影响),并进行多维的“假设”实验。
还有一个AI模式,您可以用简单的英语描述一个场景,它会为您生成实验。
税务引擎约有2000行TypeScript代码,没有外部依赖。技术栈为React 19、MobX、Tailwind v4,部署在Cloudflare Workers上。AI功能使用Claude Haiku。
注意事项:纽约/纽约市的税务模型已完全构建;对于其他地区,在联邦层面上是方向正确的(自雇税与FICA税、QBI、401k分析是与地点无关的)。假设为标准扣除。QBI假设为SSTB。此内容不构成财务建议,请将其视为与您的注册会计师(CPA)对话的准备。
我在每个计算项上添加了详细的工具提示,包括公式、IRS代码引用和来源链接。每个数字都展示了其计算过程。
我对反馈很感兴趣,特别是如果您发现税务逻辑错误。同时也想知道我是否应该优先考虑其他州(加州、德克萨斯州、佛罗里达州?)或支持逐项扣除。
<a href="https://takehome.money" rel="nofollow">https://takehome.money</a>
查看原文
I got tired of doing rough napkin math on whether to elect S-Corp for my LLC, so I built a calculator over the weekend.<p>Most tools I found either ignore state/city taxes, charge you for the answer, or require creating an account to see anything useful. TakeHome runs entirely in your browser (no sign-up, no analytics, no server-side storage) and updates every number in real time as you drag sliders.<p>What it models:
- LLC self-employment tax vs. S-Corp FICA on W-2 salary<p>- QBI deduction (Section 199A) with SSTB phase-out<p>- Solo 401(k) with SECURE 2.0 rules (traditional/Roth/split, catch-up limits by age bracket)<p>- Self-employed health insurance deduction<p>- S-Corp admin/compliance cost comparison<p>- NY State income tax, franchise tax, PTET<p>- NYC UBT (LLC), GCT (S-Corp), PIT with IT-219 credit<p>You can save scenarios, compare any two side by side (it shows exactly which inputs differ and the dollar impact), and run multi-dimensional "what-if" experiments.<p>There's also an AI mode where you describe a scenario in plain English and it generates the experiment for you.<p>The tax engine is ~2,000 lines of TypeScript with no external dependencies. Stack is React 19, MobX, Tailwind v4, deployed on Cloudflare Workers. AI feature uses Claude Haiku.<p>Caveats: NY/NYC taxes are fully modeled; for other jurisdictions it's directionally correct at the federal level (SE vs. FICA, QBI, 401k analysis are location-independent). Standard deduction assumed. SSTB assumed for QBI. Not financial advice, treat it as prep for a conversation with your CPA.<p>I've added detailed tooltips on every computed line item with formulas, IRS code references, and source links. Every number shows its work.<p>Interested in feedback, especially if you spot tax logic errors. Also curious whether I should prioritize other states (CA, TX, FL?) or itemized deduction support next.<p><a href="https://takehome.money" rel="nofollow">https://takehome.money</a>