Finally understand your equity comp.

Free tools and expert guidance for tech workers with RSUs, ISOs, options, and ESPPs.

Estimate my tax bill →
Helping tech workers at Google · Apple · Meta · Salesforce · Series A–C startups
RSU Tax Calculator

See what your vesting RSUs will actually cost you.

Most tech workers are underwithholding on RSU income and don't know it. Plug in your numbers and get an honest estimate in under 60 seconds.

Want help managing this tax bill?

More Free Tools

Every major equity decision. One place to think it through.

Short, focused tools that give you a real answer in under 3 minutes.

ESPP

ESPP Maximizer

Find out how much your ESPP is actually making you, and how much you're leaving on the table.

Open tool → QSBS

QSBS Eligibility Checker

6 questions to see if your startup equity qualifies for up to $10M in tax-free gains.

Open tool → ROTH

Backdoor Roth Calculator

Too high income for a Roth IRA? Run the backdoor math and see your projected tax-free growth.

Open tool →
Why we built Karpos Equity

Most advisors don't specialize in equity. HR can't give you tax advice.

Equity comp is one of the most valuable, and most misunderstood, parts of a tech compensation package. The average employee has never been taught how RSUs, ISOs, options, or ESPPs actually work at tax time.

We built Karpos Equity to fill that gap. Clear tools. Real answers. No jargon you have to pretend you understand.

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  • RSU withholding and underpayment planning
  • ISO exercise and AMT modeling
  • ESPP enrollment and disposition strategy
  • QSBS qualification and tracking
  • Concentrated stock diversification
  • Pre-IPO and post-liquidity tax planning