# Protect your QSBS tax break

QSBS is a powerful tax provision allowing startup founders, employees, and investors to potentially save up to millions in capital gains taxes when selling eligible company shares.

With [recent legislation](https://fund-forecasting@carta.com/blog/policy-weekly-06-03-25/) expanding the rules and benefits of QSBS, knowing how to maintain eligibility is crucial to protecting your potential tax savings.

Carta’s free eligibility guide is a great place to start, covering:

- The QSBS expansion and what it means for companies and shareholders

- Common pitfalls that can jeopardize your QSBS status

- Why annual QSBS reviews and attestation letters matter

- How Carta can help you maximize savings on capital gains