Updated July 31, 2026. Quick answer: equity compensation is not one topic, it is a sequence of deadlines, and the expensive mistakes are almost always timing mistakes rather than valuation ones. The 83(b) window is 30 days and cannot be extended. The AMT consequence of an ISO exercise is decided in the year you exercise, not the year you sell. Whether your stock qualifies for QSBS is settled by how the company was capitalised long before you have any say. And a concentrated position is a risk decision that most people postpone until a lock-up forces it. The pages below are ordered the way the decisions actually arrive: what you must elect, then what happens when you exercise, then what happens when you sell, then the state-tax and insider-rule questions that catch people who moved or who hold a title.
Elections and the deadlines that cannot be extended
- Can You File an 83(b) Election on RSUs? (2026)
- Can You Revoke an 83(b) Election If the Stock Went Down?
- Early Exercise and the 83(b) Deadline (2026)
- You Missed the 83(b) Deadline. Now What? (2026)
- Changing Your Payout Schedule Costs You Five Years
- RSU Withholding Elections Compared: All Four Methods (2026)
- Why Doesn’t Your Company Offer the 83(i) Election?
Exercising: ISOs, NSOs, AMT
- Recovering the AMT Credit After an ISO Exercise (2026)
- The ESPP $25,000 Limit, Explained (2026)
- What Happens to Your ESPP When You Leave (2026)
- ESPP Tax Calculator: Qualifying vs Disqualifying (2026)
- ESPP Disqualifying Disposition Explained (2026)
- How the ESPP Lookback Actually Works (2026)
- ESPP Qualifying Disposition: The Two Clocks (2026)
- Exercise ISOs in December or January? (2026)
- Exercising ISOs to Tender in the Same Year: What Happens to the AMT
- The ISO $100,000 Limit, Explained (2026)
- ISOs and the 90-Day Window After You Leave (2026)
- ISO Bargain Element and AMT Exposure Calculator (2026)
- ISO Disqualifying Disposition: What It Costs (2026)
- Max the ESPP or the 401(k) First? (2026)
- NSO vs ISO: The Tax Difference That Matters (2026)
- RSUs & Stock Options Financial Advisor 2026: When to DIY vs Hire
- Should You Sell ESPP Shares Immediately? (2026)
Pre-IPO, tender offers and QSBS
- Does a Private Company File Anything With the SEC for a Tender Offer?
- Does an IPO Lockup Delay the Tax on Your RSUs? A Regulation Answers This
- Is the 180-Day IPO Lockup Required by Law, or Just the Underwriters?
- The QSBS Cap: $15 Million or 10x Basis (2026)
- What Changed for QSBS in 2025 (and Who It Applies To)
- The QSBS Holding Period: 5 Years, or 3 and 4 (2026)
- QSBS Exclusion Calculator: Old vs New Rules (2026)
- QSBS Issued Before July 2025: Your Rules Did Not Change
- Does Your Stock Actually Qualify as QSBS? (2026)
- Tender Offer Above Your 409A Valuation: Which Part Is W-2 Wages?
- Tender Offer vs Selling on a Secondary Market: Who Has to Agree
- Which Share Lots Should You Tender? The Default Is Not In Your Favour
- Why Is Your Tender Offer Open Exactly 20 Business Days?
Selling, hedging and concentrated positions
- The 10b5-1 Cooling-Off Period for Officers and Directors, as It Stands in 2026
- What to Do With a Concentrated Stock Position (2026)
- The 30-Day Constructive Sale Exception, and Its Three Conditions
- Constructive Sale Rules: Four Triggers, and a Fifth That Was Never Switched On
- Does a Collar Trigger a Constructive Sale? Nobody Can Tell You
- Why Exchange Funds Hold Real Estate: the 80% Test
- The Exchange Fund Seven-Year Rule Is Not a Lockup
- Exchange Fund vs Collar: They Do Not Solve the Same Problem
- Exchange Fund vs Just Selling: Deferral Is Not Forgiveness
- Modifying a 10b5-1 Plan Restarts the Cooling-Off Period
- Net Share Settlement vs Sell to Cover (2026)
- Prepaid Variable Forwards and Section 1259: What Rev. Rul. 2003-7 Requires
- Prepaid Variable Forward vs Collar: One Pays You Today
- Paying Cash for RSU Taxes vs Sell to Cover (2026)
- RSU Sell to Cover vs Net Shares 2026: Taxes & Cash Pay
- Do RSU Sales Trigger the Wash Sale Rule? (2026)
- Rule 701 After an IPO: What Affiliates Get, and What They Do Not
- Same-Day Sale vs Sell to Cover (2026)
- Should You Sell RSUs at Vest or Hold? (2026)
- Sell to Cover with Stock Options: ISOs and NQSOs (2026)
- A Tax Plan for Selling Down Concentrated Stock (2026)
- Vested vs Sellable RSUs: Why You Cannot Sell Yet (2026)
- Withhold to Cover vs Sell to Cover: The Difference (2026)
Deferred comp and moving states
- California and New York Allocate the Same Payment Differently
- A Lump Sum Follows You. That Is the Whole Problem.
- Does California Tax Your Deferred Comp After You Move?
- The Excess-Benefit Exception Ignores the Schedule — If You Qualify
- New York Uses a Four-Year Ratio — And the Convenience Rule Feeds It
- The 10-Year Rule That Decides Whether Your Old State Taxes You
- Five Years Fails. Ten Years Passes. Nothing In Between.
- RSU Tax When You Move States (2026)
- Severance Does Not Get the Federal Protection
More in this guide
- Donating Appreciated Stock vs Cash (2026)
- Donor-Advised Funds and Appreciated Stock (2026)
- Double-Trigger RSUs and the IPO Tax Bill (2026)
- Employer Stock Inside Your 401(k): The Hidden Concentration (2026)
- Equity Compensation Glossary 2026: RSU & Stock Option Terms
- Equity Compensation Tax Guide (2026): RSUs, ISOs, ESPP
- Net Unrealized Appreciation, Explained (2026)
- NUA vs IRA Rollover Calculator (2026)
- Equity Comp in Retirement
- The RSU Cost-Basis Trap That Double-Taxes You (2026)
- RSU Estimated Taxes and the Safe Harbor (2026)
- Why 22% Withholding on RSUs Is Not Enough (2026)
- RSU Withholding Gap Calculator (2026)
- What Happens to Your RSUs When You Leave (2026)
- Rule 144 After an IPO: Why Six Months Is Not Available for the First 90 Days
- Does the Short-Swing Profit Rule Apply to Your IPO Shares?
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