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QSBS
QSBS (Section 1202): the complete guide
Qualified small business stock can erase the federal tax on a startup-stock sale, sometimes the whole thing. This is the full story: which rules apply to your shares, how the exclusion is sized, the holding clock, and the per-issuer cap that decides how much you actually shelter.
How people accidentally blow their QSBS
Most QSBS gets lost by accident, not by bad luck. A redemption, an early sale, the wrong entity, a secondary purchase, or missing records can quietly kill a break worth more than the mistake ever felt at the time.
Planning around QSBS: setup, stacking, and the 1045 rollover
The QSBS exclusion is mostly decided at the moment you get the stock, not the moment you sell. This is the planning playbook: lock in qualification early, multiply the cap with gifts and trusts, and use a Section 1045 rollover to rescue a forced early exit.
QSBS and California
California ignores the QSBS exclusion entirely. A gain the IRS lets you exclude in full is taxed at up to 13.3 percent by California, and the only real fix is residency, set up years before you sell.