Stop leaving money on the table. Pro gives you personalized analysis based on your actual numbers — not generic advice built for someone else's situation.
Free tools calculate — Pro advises. Here's exactly what changes at $19/month.
| Feature | Free | Pro $19/mo |
|---|---|---|
| Calculators & Generators | ||
| SE Tax Calculator (2026 rates) | ✓ | ✓ |
| Entity Comparison Calculator | ✓ | ✓ |
| QBI Deduction Calculator | ✓ | ✓ |
| Quarterly Tax Estimator | ✓ | ✓ |
| Home Office Calculator | ✓ | ✓ |
| Reasonable Salary Calculator (S-Corp) | ✓ | ✓ |
| State Tax Stack (50 states) | ✓ | ✓ |
| Saved calculation history | — | ✓ Saved to dashboard |
| AI Analysis | ||
| AI Tax Advisor (basic Q&A) | ✓ Limited | ✓ Unlimited |
| Tax Optimization Report | $39/report | ✓ Unlimited included |
| Personalized analysis (your numbers) | — | ✓ Built for your profile |
| S-Corp election analysis & checklist | Generic only | ✓ Your revenue + state |
| Entity structure recommendations | Generic only | ✓ Tailored to your situation |
| Reminders & Monitoring | ||
| Quarterly estimated tax reminders | — | ✓ Email alerts before due dates |
| Tax law change alerts | — | ✓ When laws affect you |
| Personalized tax dashboard | — | ✓ All your data in one place |
| Always free | Start Pro — $19/mo |
Every Pro feature uses your numbers — not averages built for someone with a completely different business.
A comprehensive analysis of your tax position — deductions you're eligible for, entity structure opportunities, and dollar-amount estimates of what each strategy could save you. Normally $39 per report. Unlimited with Pro.
Ask anything — and get answers tuned to your situation. The advisor knows your entity type, income range, home state, and prior questions. No re-explaining your setup every time. Backed by IRS publications and 2026 tax code data.
The difference between LLC, S-Corp, and C-Corp isn't abstract — it's dollar amounts that change based on your revenue, state, and goals. Pro runs your actual numbers through every structure and shows you exactly where the crossover points are.
Miss one estimated tax payment and you'll owe IRS penalty + interest on top of your regular bill. Pro sends you deadline alerts before each quarterly due date with a pre-calculated payment estimate based on your income profile.
Every analysis cites its source so you can verify — and bring it to your CPA.
All rates, brackets, and limits reflect current IRS publications for tax year 2026, including changes from the One Big Beautiful Budget Act (OBBBA). Updated quarterly when agencies publish changes.
Every AI output cites its source — IRS publications, Rev. Procs., Treasury regs, and state tax authority documents. Not a black box. Show your CPA exactly where each number comes from.
SE tax calculations use current FICA wage bases from the Social Security Administration. Self-employment tax rates, QBI phase-out thresholds, and safe harbor rules are pulled from official IRS guidance.
Encrypted in transit and at rest. Never sold. Never used for ads. You can delete your account and all data at any time. TaxStackHub earns revenue from subscriptions — not from monetizing your financial data.
Pro is designed to sit between DIY guessing and full CPA advisory — helping you understand your situation, model scenarios, and arrive at CPA meetings prepared. All outputs are informational. Always consult a licensed professional before major decisions.
State tax analysis covers income tax rates, franchise taxes, payroll obligations, and state-specific S-Corp rules for all 50 states and DC. Particularly valuable for the S-Corp decision, which varies dramatically by state.
No tiers, no add-ons, no feature gates inside Pro. Pay monthly or save $79 with annual.
If your question isn't here, email hello@taxstackhub.ai
Personalization. Free tools give you calculations based on inputs you provide. Pro builds a profile of your situation and gives you analysis tailored to your entity type, income, state, and goals — plus unlimited AI reports and saved history.
Yes. Cancel from your dashboard or email hello@taxstackhub.ai. No contracts, no fees, no questions. Pro access continues through your current billing period — then stops. Nothing charged after that.
All rates and rules are based on current IRS publications and 2026 tax code data, updated quarterly. Every output cites its source inline. TaxStackHub Pro is an intelligence tool — not a substitute for a licensed CPA or enrolled agent.
Yes. TLS 1.3 in transit, AES-256 at rest. We don't sell data or use it for advertising. You can delete your account and all data at any time from your dashboard settings.
Depends entirely on your situation. An LLC owner at $80K net who misses the S-Corp window could be overpaying $8K–$11K/yr. At $19/month, you need to find one actionable insight per year to break even — most users find that in their first report.
Probably, for filing and major decisions. Pro is designed to bridge the gap between "guessing" and "CPA-ready" — so you arrive at advisory meetings prepared, with your situation modeled and questions formulated. It makes your CPA time more productive.
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