Blog
Articles on equity-comp tax mechanics, RSU planning, and the rules behind every calculator on this site. 33 posts so far, each citing the IRC section or IRS publication that controls the underlying rule.
Latest
The 5 most recently published or substantively updated posts.
- Jun 10, 2026Filing & withholding strategy
RSU wash sale rule: how a vest can quietly disallow your stock loss
Selling company stock at a loss? An RSU vest within 30 days — before or after — counts as an "acquisition" under the wash sale rule and can disallow part of that loss. Here is how the §1091 trap works for RSU and ESPP holders, what gets disallowed, and how to avoid it.
- Jun 9, 2026RSU basics
RSU vested but not released: what it means (and when you can sell)
"Vested" means you have earned your RSUs; "released" (also called settled or distributed) means the shares have actually been delivered to your brokerage account. Here is why there is a gap between the two, when you are taxed, and the pre-IPO case where vested shares stay unreleased for years.
- Jun 9, 2026Filing & withholding strategy
2026 equity comp tax numbers: every rate, bracket, and limit in one place
The verified 2026 figures a tech worker with RSUs, ISOs, NSOs, or ESPP actually needs — federal brackets, standard deduction, the OBBBA-changed AMT, long-term capital gains, FICA wage base, supplemental withholding, and retirement limits. Each number cited to its IRS source.
- Jun 1, 2026Stock options (ISO / NSO)
QSBS explained: how startup employees can pay $0 tax on up to $15M of gains
Section 1202 (QSBS) can wipe out federal tax on millions in startup stock gains — and the rules just got better in July 2025. Here is who qualifies, the new tiered holding period, and the traps in plain English.
- May 26, 2026Multi-state moves & IPO events
Daniel's $34,000 CA→TX surprise — what California claimed after the move, and the quarterly schedule that defeated the §19136 penalty
Senior engineer moved from San Francisco to Austin in August 2024 with 1,600 unvested RSUs on a 2022 grant. Assumed Texas residency meant zero state tax on future vests. Caught the work-source allocation trap in October — $34,000 of CA tax owed across 2024-2026, plus avoided $1,400 of §19136 underpayment penalty by setting up CA Form 540-ES quarterly payments. Vest-by-vest math + the FTB Pub 1004 citations.
RSU basics
The 22% supplemental withholding gap, double-taxation myth, vest mechanics, and the questions everyone googles after their first vest.
- Jun 9, 2026RSU basics
RSU vested but not released: what it means (and when you can sell)
"Vested" means you have earned your RSUs; "released" (also called settled or distributed) means the shares have actually been delivered to your brokerage account. Here is why there is a gap between the two, when you are taxed, and the pre-IPO case where vested shares stay unreleased for years.
- May 19, 2026RSU basics
Is there a way to avoid taxes on RSUs? (Honest answer: no, but 5 ways to optimize)
You cannot legally avoid tax on RSU vests — the FMV is taxed as ordinary income under IRC §83(a) the moment shares deliver. But 5 strategies can legally reduce, defer, or offset the tax bill: state arbitrage, 401(k) and HSA stacking, qualified charitable gifts, tax-loss harvesting, and post-vest holding for LTCG.
- May 18, 2026RSU basics
How much tax will I pay on my RSU? The 30–40% answer, with the actual math
Most US tech workers pay 30–40% of their RSU vest value in combined federal, state, and FICA tax. Walk the exact math by bracket, state, and income level — then plug your numbers into the calculator.
- May 17, 2026RSU basics
When can you sell RSUs after vesting? How soon you can sell, and whether you should
How many days after your RSUs vest can you sell them? Usually the same day — there is no IRS waiting period, only blackout windows and lockups. Then the real question: should you sell at vest or hold for long-term capital gains? The full timing + tax math.
- May 16, 2026RSU basics
Do RSUs get taxed twice? The simple answer, with real examples
Short answer: no. RSUs are taxed once, in two pieces — income tax when they vest, and a smaller gain tax later if the price goes up. The “double tax” scare is almost always one fixable mistake on your broker’s form. Here it is in plain English.
- May 15, 2026RSU basics
RSU over-withholding: when 30–35% taken from your vest is normal (and when it isn't)
Your employer withheld 30–35% on your RSU vest and you think they made a mistake. Walk the math: federal supplemental, state, Medicare, and Additional Medicare stack quickly. Most of the time it is correct.
- Apr 15, 2026RSU basics
Why your RSU tax bill seems too high — the 22% withholding gap, explained
Your employer withholds 22% federal on RSU vests under the supplemental-wage rule, but your real marginal rate may be 32–37%. Here is the math, the source of the rule, and how to avoid an April surprise.
Paystub & W-2 mechanics
Decoding the strange line items on your paystub and W-2 — the RSU tax offset, Box 14 codes, and the sell-to-cover vs net-share-settlement withholding mechanic.
- May 19, 2026Paystub & W-2 mechanics
RSU sell-to-cover vs withhold-to-cover (net share settlement)
Two ways your employer can withhold taxes on an RSU vest: sell-to-cover (broker sells some of your shares on the open market) or net share settlement / share withholding (employer effectively buys back shares before they hit your account). For you the employee, the net cash and tax outcome is identical. The difference matters for the company and for thinly-traded private-company stock.
- May 19, 2026Paystub & W-2 mechanics
What is the RSU tax category in Box 14 on my W-2? (Plain-English decoder)
Box 14 on your W-2 is an informational line your employer uses to itemize specific compensation components. The RSU code there (RSU, RSU VEST, SECT 132, EQUITY COMP, STKCMP) is not extra income — it is just a callout of how much of your Box 1 wages came from RSU vests. No action required on your federal return.
- May 19, 2026Paystub & W-2 mechanics
What is the RSU tax offset on my paycheck? Plain-English explanation
The "RSU tax offset" line on your paystub is not a real charge. It is an accounting placeholder your payroll software uses to reconcile the RSU vest income that already had taxes withheld via share-withholding (sell-to-cover). Net effect on take-home: zero.
Stock options (ISO / NSO)
ISOs, NSOs, AMT, the §83(b) early-exercise election, and AMT credit recovery — the full equity-options tax cluster.
- Jun 1, 2026Stock options (ISO / NSO)
QSBS explained: how startup employees can pay $0 tax on up to $15M of gains
Section 1202 (QSBS) can wipe out federal tax on millions in startup stock gains — and the rules just got better in July 2025. Here is who qualifies, the new tiered holding period, and the traps in plain English.
- May 19, 2026Stock options (ISO / NSO)
AMT credit recovery: how Form 8801 actually works (and why you probably forgot to claim it)
Every dollar of AMT you paid on an ISO exercise becomes a credit you can recover in future years — but only when your regular tax exceeds your tentative minimum tax in that year. Form 8801 is how you track and claim it. Most ISO exercisers never recover their credit because they never file the form.
- May 19, 2026Stock options (ISO / NSO)
ISO disqualifying disposition: when selling early actually wins
Selling ISO shares before the §422 qualifying period (2 years from grant, 1 year from exercise) usually feels like a tax mistake — it converts what would have been LTCG into ordinary income. But in two specific scenarios, a disqualifying disposition is actually the right move: the stock has crashed, or you exercised at a high FMV and the price has been flat. Here is the math.
- May 19, 2026Stock options (ISO / NSO)
Early exercise of NSOs + 83(b) election: when it pays off, when it does not
Early-exercising unvested NSO grants and filing a §83(b) election within 30 days converts all future appreciation from ordinary income (37%+ federal) to long-term capital gain (15-20%). For a pre-IPO startup employee with a $0.10 strike and a $10 expected exit, that can be a six-figure tax saving. But the trade-offs — cash out of pocket now, forfeiture risk, fiduciary 30-day clock — are unforgiving.
- May 19, 2026Stock options (ISO / NSO)
Stock options vs RSUs: how the tax treatment actually differs (worked examples)
RSUs are taxed at vest as ordinary W-2 income on the full FMV. Stock options are only taxed when you exercise — and the mechanics split into ISOs (AMT preference, no ordinary income) and NSOs (ordinary income + FICA on the bargain element). The right grant to choose depends on share-price trajectory, holding plans, and AMT exposure.
ESPP
Employee Stock Purchase Plan tax math — qualifying vs disqualifying disposition timing under IRC §423.
Bonus & supplemental wages
The 22%/37% supplemental withholding rule that applies to bonuses, RSU vests, and NSO exercises alike.
- May 19, 2026Bonus & supplemental wages
Why is my bonus taxed at 40%? The supplemental wage rule, explained
Your year-end bonus shows up with ~40% taken out and you assume something is wrong. It usually is not. Federal supplemental withholding is 22% by default (or 37% above $1M YTD) regardless of your bracket — and that stacks with state, Medicare, Social Security, and any add-on Medicare for high earners. Here is the actual math.
- Apr 18, 2026Bonus & supplemental wages
IRS Publication 15: supplemental wages, 22% & 37%
IRS Publication 15 sets supplemental-wage withholding at a flat 22% on the first $1,000,000 of bonuses and RSU vests each year, then 37% above that. The exact 2026 rule, the per-employer $1M threshold, the aggregate-method alternative, and what to do when 22% under-withholds your real bracket.
Filing & withholding strategy
How to fix the shortfall before April: W-4 line 4(c), IRC §6654 safe harbor, quarterly estimates, Form 8949 cost-basis adjustments, and the year-end checklist.
- Jun 10, 2026Filing & withholding strategy
RSU wash sale rule: how a vest can quietly disallow your stock loss
Selling company stock at a loss? An RSU vest within 30 days — before or after — counts as an "acquisition" under the wash sale rule and can disallow part of that loss. Here is how the §1091 trap works for RSU and ESPP holders, what gets disallowed, and how to avoid it.
- Jun 9, 2026Filing & withholding strategy
2026 equity comp tax numbers: every rate, bracket, and limit in one place
The verified 2026 figures a tech worker with RSUs, ISOs, NSOs, or ESPP actually needs — federal brackets, standard deduction, the OBBBA-changed AMT, long-term capital gains, FICA wage base, supplemental withholding, and retirement limits. Each number cited to its IRS source.
- May 26, 2026Filing & withholding strategy
Maya's RSU cost-basis fix: $1,215 saved on one 100-share sale (up to $2,574 worst-case) — the 60-second Form 8949 column (g) correction
Engineer, $280k W-2 California. Sold 100 RSU shares in September, broker reported cost basis = $0 on the 1099-B. The correct Form 8949 column (g) adjustment took 60 seconds and saved her $1,215 on the sale — up to $2,574 in the worst case where her software also taxed it at the wrong rate. Step-by-step worked math with the IRC and broker-reporting citations.
- May 26, 2026Filing & withholding strategy
Priya's $11,300 cash + $77,000 tax-shelter — what a 90-minute year-end review caught
Senior engineer, $310k MFJ NY, equity comp. She ran a year-end tax review on October 15. The 5 things she found before December 31, the IRC citations, and the exact dollar figures — including the $1,400 §6654 penalty she avoided and the $77,000 of Mega-Backdoor Roth capacity she did not know existed.
- May 22, 2026Filing & withholding strategy
Mega-Backdoor Roth: am I eligible, and how much can I actually do?
Two conditions decide it: your 401(k) plan must allow after-tax contributions AND offer in-service distribution or in-plan Roth conversion. Walk the §415(c) math, identify the room your plan leaves, and learn how to check both flags inside 60 seconds.
- May 22, 2026Filing & withholding strategy
How to fix the RSU cost-basis double-tax on Form 8949
Your broker reports cost basis = $0 on RSU sales. If you let that stand, the IRS taxes the same dollars twice — once as W-2 wages at vest, again as capital gain at sale. Fix it with Form 8949 column (g). Step-by-step walkthrough with screenshots for TurboTax + FreeTaxUSA.
- May 19, 2026Filing & withholding strategy
How to report RSUs on your tax return: W-2, 1099-B, Form 8949, Schedule D
Step-by-step guide to reporting RSU vests and sales on your federal return. RSU vest income flows through W-2 Box 1 (already done by your employer). Sold shares get reported on Form 8949 and rolled up to Schedule D — with one critical cost-basis adjustment most brokers leave to you to fix.
- Apr 30, 2026Filing & withholding strategy
Year-end equity comp tax checklist (RSUs, ESPP, ISO, NSO)
A 10-item December checklist to avoid surprises on next April's return when your compensation includes RSUs, ESPP, or stock options. Each item links back to the calculator and the deeper article that explains the mechanic.
- Apr 22, 2026Filing & withholding strategy
How to set extra W-4 withholding to cover an RSU shortfall (step-by-step)
Step-by-step guide to using Form W-4 line 4(c) to withhold extra federal tax from each paycheck and avoid an April surprise. Plus the mechanic that makes W-4 the right tool 90% of the time: IRC §6654(g)(1) treats withholding as paid evenly across the year.
- Apr 20, 2026Filing & withholding strategy
Should you make estimated tax payments after an RSU vest?
How the IRS §6654 safe-harbor rule works, when an RSU shortfall triggers an underpayment penalty, and the two ways to fix it — with worked numbers and the exact mechanics of why W-4 line 4(c) beats a Q4 estimated payment for retroactive coverage.
Multi-state moves & IPO events
State-residency sourcing rules, California workday allocation, and the double-trigger lockup tax bomb at IPO.
- May 26, 2026Multi-state moves & IPO events
Daniel's $34,000 CA→TX surprise — what California claimed after the move, and the quarterly schedule that defeated the §19136 penalty
Senior engineer moved from San Francisco to Austin in August 2024 with 1,600 unvested RSUs on a 2022 grant. Assumed Texas residency meant zero state tax on future vests. Caught the work-source allocation trap in October — $34,000 of CA tax owed across 2024-2026, plus avoided $1,400 of §19136 underpayment penalty by setting up CA Form 540-ES quarterly payments. Vest-by-vest math + the FTB Pub 1004 citations.
- May 22, 2026Multi-state moves & IPO events
CA → TX with unvested RSUs: the work-source allocation trap
Moving from California to Texas while you still have a multi-year RSU vesting cliff? CA does not stop taxing the vesting period after you move. The work-source allocation rule (FTB Pub 1004) splits each vest by months-worked-in-each-state. Worked example: $34,000 in surprise CA tax across 3 post-move years.
- May 19, 2026Multi-state moves & IPO events
Double-trigger RSUs at IPO: the tax math nobody warned you about
Pre-IPO RSUs at companies like Stripe, Databricks, SpaceX, and Canva vest on TWO triggers: time-based vesting + a liquidity event. Until IPO, no tax. When the company finally goes public, every share that "vested" over the past 4-7 years hits ordinary income in a single year — often producing seven-figure tax bills with no cash to pay them.
- May 19, 2026Multi-state moves & IPO events
Multi-state RSU sourcing: California workday allocation explained
Moving in or out of California before an RSU vest does not always escape California tax. The Franchise Tax Board sources RSU income to California based on the percentage of the vesting period you worked there — even if you live elsewhere on vest day. Here is the math, with worked examples for the most common move scenarios.
- Apr 25, 2026Multi-state moves & IPO events
RSU taxes by state: California, New York, Washington, and Texas compared
How state income tax stacks on top of federal RSU withholding in the four biggest tech-worker states — plus the multi-state allocation rule that catches movers, and worked examples for a typical $50k vest in each state.
