VestingTax.com helps U.S. employees understand RSU and equity compensation taxes with plain-language guides and calculators you can run yourself — before W-2 season, not after a surprise balance due.
Why this site exists
Equity comp tax hits in layers: vest wages on your W-2, supplemental withholding that may not match your bracket, 1099-B sales with missing basis, and state rules when you move. Generic tax software helps at filing time; this site focuses on the planning window in between.
How we work (without pretending to be your CPA)
We are not a CPA firm, enrolled agent practice, law office, or tax preparation service. We do not hold ourselves out as licensed tax professionals and we do not provide personalized advice.
What we do instead is publish carefully sourced educational content: each major guide cites IRS publications, form instructions, or state agency guidance where we describe tax rules. Calculators show their assumptions, tax year, and source links in the results panel. Pages display a Reviewed for tax year 2026 block with a last-reviewed date so you can judge freshness.
What we provide
- Browser-based calculators with assumptions shown on every result
- Guides for RSU timing, tax forms, ISO/AMT basics, and state moves
- A methodology page explaining federal vs. estimated state rates
- An editorial standards page describing our source hierarchy, review process, and correction policy
Who maintains the site
VestingTax.com is built and maintained as an independent educational project focused on employee equity tax literacy. Content is written in plain language, checked against primary sources, and updated when tax years or official guidance change. You can reach us at contact@vestingtax.com for factual corrections (with an official source link), calculator bugs, or guide suggestions.
What we do not provide
We do not store your calculator inputs on our servers, review individual returns, or answer personal tax questions by email. For that, work with a qualified professional who knows your full situation.
How to use the site responsibly
Pick your tax year, read the assumptions and cited sources, compare estimates to your pay stub and vest confirmations, then confirm with IRS or state guidance and a tax pro before filing. See our Disclaimer for full limits of liability.