At 56, David thought he understood his compensation package from the technology company where he’d worked for eight years. He knew he had “stock stuff” that vested over time, and he’d been told it was valuable. But when he sat down to review his retirement readiness, he realized he couldn’t answer basic questions: What exactly did he own? When would he owe taxes? Should he hold the shares or sell them? And most importantly, how should this equity compensation factor into his retirement plan?
David’s confusion isn’t unusual. Many professionals in Greater Los Angeles’s thriving tech sector receive equity compensation but lack clarity on what they actually have. Whether you work for an established company or a growing startup, understanding your equity compensation is crucial. Especially as you approach retirement.
The stakes are high. For many professionals in their 50s and 60s, equity compensation represents a significant portion of net worth, sometimes exceeding the value of their 401(k). Yet without clear understanding of the differences between restricted stock units (RSUs) and stock options, and the tax implications of each, you risk costly mistakes that could derail your retirement plans.
RSUs: The Basics
Restricted stock units are the simpler of the two main equity compensation types, which is partly why they’ve become increasingly popular among technology companies over the past decade.
How RSUs Work
An RSU represents a promise from your employer to give you actual company shares on a future date, assuming you meet certain conditions, typically remaining employed through the vesting period. Think of it as a bonus that will be paid in stock rather than cash, but only if you stick around.
Here’s the typical timeline:
- Grant Date: Your employer promises you 1,000 RSUs. At this point, you don’t own anything yet and owe no taxes.
- Vesting Schedule: Most commonly, RSUs vest over four years, with 25% vesting after one year and the remainder vesting quarterly or monthly thereafter. Some companies front-load vesting, while others use different schedules.
- Vesting Date: When RSUs vest, you receive actual shares. The fair market value of those shares on the vesting date becomes taxable income—just as if you received a cash bonus. Your company typically withholds shares to cover taxes.
- Post-Vest: You now own the shares outright and can hold or sell them as you choose.
Let’s look at a concrete example:
You’re granted 1,000 RSUs when the stock price is $50. After one year, 250 RSUs vest, and the stock price is now $75. You receive approximately 165 shares (250 minus roughly 85 shares withheld for taxes at a 34% rate). The $18,750 value (250 × $75) becomes taxable income on your W-2.
Advantages of RSUs: RSUs are simple to understand, require no out-of-pocket cost, provide immediate value upon vesting (you own actual shares), and carry no risk of ending up “underwater” unlike options.
Disadvantages of RSUs: You face a tax bill upon vesting whether you sell or not, have no control over timing of the taxable event, may find that withheld shares don’t cover full tax liability in California, and receive less upside potential compared to options in theory.
Stock Options: The Two Types
Stock options are more complex than RSUs but can offer greater upside potential. They give you the right, but not the obligation, to purchase company stock at a predetermined price (the “strike price” or “exercise price”). The two types of stock options have dramatically different tax treatment.
Incentive Stock Options (ISOs)
ISOs come with significant tax advantages but also meaningful complexity, particularly in California where Alternative Minimum Tax (AMT) considerations are crucial.
How ISOs Work:
When granted ISOs, you receive the right to buy shares at the current fair market value (your strike price). If the stock price increases, you can eventually exercise (purchase the shares at your lower strike price) and potentially receive favorable long-term capital gains treatment when you sell.
Tax Advantages: ISOs offer no regular income tax upon exercise. If you hold shares for at least two years from grant date AND one year from exercise date, your entire gain receives long-term capital gains treatment. Long-term capital gains are taxed at lower rates than ordinary income: 0%, 15%, or 20% federal, plus 13.3% California on higher incomes.
The AMT Complication:
Here’s where ISOs get tricky, especially in California. When you exercise ISOs, the “bargain element” (difference between strike price and fair market value) becomes an AMT preference item. This can trigger significant AMT liability even though you haven’t sold the shares or realized any cash.
California’s AMT rate is 7%, while federal AMT rates are 26-28%. For high earners in California, exercising substantial ISOs can create a significant tax bill with no corresponding cash received. Some people have found themselves owing six-figure AMT bills on shares they still hold (and that may have declined in value since exercise).
Non-Qualified Stock Options (NSOs)
NSOs lack the preferential tax treatment of ISOs but offer more flexibility and no AMT complications.
How NSOs Work:
When you exercise NSOs, the bargain element (current fair market value minus strike price) is immediately taxable as ordinary income, subject to federal tax, California state tax, Social Security tax (if applicable), and Medicare tax. Your employer withholds taxes just like a bonus.
Once you’ve exercised and own the shares, any subsequent gain or loss is treated as capital gain or loss, with long-term treatment if you hold shares more than one year after exercise.
Why Companies Choose Each Type:
Companies issue ISOs when they want to provide maximum tax benefits to employees, knowing there are regulatory constraints. They issue NSOs for broader applicability (non-employees), higher-value grants (over the $100K ISO limit), or when they want simpler tax treatment.
Many companies grant a mix: ISOs up to the $100,000 annual vesting limit, with the excess as NSOs.
Critical Differences That Impact Your Retirement Planning
Understanding the structural differences between RSUs and stock options is important, but what matters most as you approach retirement is how these differences affect your financial plan.
Taxation Timing
RSUs create taxable events at vesting whether you like it or not. You’ll owe taxes (federal, California, Social Security if under the wage base, Medicare) on the full value of vested shares. For someone in their late 50s or early 60s earning a healthy salary, this could mean a marginal tax rate approaching 50% in California when you combine federal, state, and payroll taxes.
Stock options give you more control over timing. You choose when to exercise (for both ISOs and NSOs) and when to sell (after exercise). This flexibility can be valuable for tax planning, allowing you to spread income across multiple years or exercise in lower-income years.
However, this flexibility comes with complexity and the risk of decision paralysis. Many people hold options too long, either letting them expire or watching their value evaporate in a market downturn.
Cash Flow Implications
RSUs never require cash out of your pocket. When they vest, you receive shares (minus withholding). You can immediately sell some or all shares if you need cash.
Stock options require capital to exercise (unless your company offers cashless exercise programs). If you have 10,000 NSOs with a $25 strike price and the current price is $75, you need $250,000 to exercise (plus cash to cover the immediate tax bill on the $500,000 bargain element). For ISOs, you need the exercise cost and potentially AMT liability, even without selling shares.
This cash flow reality becomes critical in your 50s and 60s when you’re thinking about retirement timing. Can you afford to exercise options? Should you use retirement savings to do so? These questions require careful analysis.
Risk Profiles
RSUs carry less risk than options because you receive actual value whenever shares vest. Even if the stock price drops after vesting, you received something. The only scenario where RSUs become worthless is if the stock drops to zero between grant and vesting, possible but unlikely for established companies.
Stock options can expire worthless if the stock price never exceeds your strike price (being “underwater”). They also have expiration dates, typically 10 years from grant, but often just 90 days after you leave the company. This creates pressure to make exercise decisions, sometimes at inopportune times.
For pre-retirees, the risk profile difference is significant. If you’re planning to retire in three years and your options expire 90 days after leaving, you may be forced to exercise even if market conditions aren’t ideal.
Planning Implications for Pre-Retirees
If you’re in your 50s or 60s, these differences should inform your approach:
With RSUs: Plan for the tax liability each vesting period, develop a sell discipline to avoid accumulating too much company stock, consider the impact on IRMAA (Medicare premium surcharges), and coordinate vesting schedule with retirement timing.
With Options: Inventory all grants, strike prices, and expiration dates. Model the cost and tax impact of exercising. Don’t let options expire unexercised if they’re in the money. Consider early exercise of ISOs in lower-income years. Plan for post-termination exercise deadlines.
Strategic Considerations by Life Stage
Your approach to equity compensation should evolve as you progress through your 50s and 60s toward retirement.
In Your 50s: Risk Management and Tax Planning
This is the decade to get serious about diversification. If you’ve been at your company for years, you may have accumulated substantial company stock. While it’s tempting to hold winners, concentration risk increases as retirement approaches.
Consider these strategies: establish systematic selling where you sell a portion of vested RSUs or exercised options regularly regardless of stock price; use tax-loss harvesting if some equity grants have declined by selling at a loss to offset other capital gains; coordinate Roth conversions if exercising ISOs or selling stock creates a lower-income year; and model ISO exercise timing to determine whether exercising in your 50s while still working makes sense despite AMT, as this starts the capital gains holding period.
In Your 60s: Diversification Urgency and IRMAA Implications
As retirement nears, two priorities dominate:
Diversification becomes urgent. You’re shifting from accumulation to preservation mode. Company stock may have been a great wealth builder, but concentrated positions create vulnerability. A significant market decline or company-specific problem in your first few years of retirement can derail your plans.
IRMAA surcharges matter more. Medicare Income-Related Monthly Adjustment Amounts (IRMAA) create premium surcharges based on modified adjusted gross income from two years prior. Large equity compensation events (RSU vesting, option exercises, stock sales) can trigger IRMAA surcharges affecting your Medicare Part B and Part D premiums.
For 2026, IRMAA surcharges begin at modified AGI of $106,000 (single) or $212,000 (married). Each tier increases premiums by $70-400+ per person monthly. Over a year, this can mean thousands in additional Medicare costs.
Strategic considerations: spread option exercises by exercising ISOs over multiple years to avoid IRMAA cliff effects; time RSU vesting by negotiating vesting schedule if possible to avoid large income spikes; and coordinate with retirement date, as sometimes delaying retirement by months can shift equity compensation to a more favorable tax year.
Post-Retirement Considerations
Once retired, equity compensation becomes part of your income planning rather than an employee benefit. Questions shift to how much company stock you should hold, what your overall portfolio allocation should be, how to sequence income from different sources to minimize taxes, and whether to hold or sell appreciated stock from old ISO exercises.
Common Mistakes
After working with numerous tech professionals and aerospace engineers in the Greater LA area, we’ve seen recurring mistakes that are entirely avoidable:
Letting Options Expire
This is the most painful mistake. We’ve met people who let hundreds of thousands of dollars in option value expire worthless simply because they didn’t track expiration dates or didn’t understand they had 90 days post-termination to exercise.
Create a spreadsheet tracking every grant, strike price, current value, and expiration date. Set calendar reminders one year before expiration and again six months before. If you’re leaving the company, understand your post-termination exercise window and have a plan.
Not Understanding AMT in California
California’s combination of high state income tax and AMT creates unique challenges. Exercising large ISO positions can trigger six-figure tax bills with no cash received. Always model the AMT impact before exercising ISOs, especially in California.
Consider working with a tax professional to run projections. Sometimes exercising a portion of ISOs each year keeps you below AMT thresholds, while exercising all at once creates a massive tax bill.
Over-Concentration in Company Stock
We understand the emotional attachment to your employer’s stock, especially if it’s treated you well. But over-concentration is among the riskiest positions you can take approaching retirement.
Financial planning guidelines typically suggest no more than 5-10% of your portfolio in any single stock, and perhaps 10-15% in your employer’s stock if you’re still working there. Anything beyond that exposes you to unnecessary risk. Remember: your human capital (income) is already tied to your employer. Don’t compound that by tying your financial capital there too.
Poor Tax Planning
Many people exercise options or allow RSUs to vest without considering the broader tax implications:
- Pushing yourself into a higher tax bracket unnecessarily
- Triggering IRMAA surcharges
- Missing opportunities to harvest losses
- Not coordinating with other income sources (bonuses, retirement account withdrawals)
Equity compensation should be integrated into comprehensive tax planning, not treated as a separate issue.
Creating Your Strategy
Now that you understand the fundamentals, here’s how to develop your personalized equity compensation strategy:
Key Questions to Answer:
- What exactly do I have? List every grant, type (RSU/ISO/NSO), quantity, strike price (for options), vesting schedule, and expiration date.
- What is my current concentration risk? Calculate company stock as a percentage of total net worth. Include vested RSUs, exercised options you still hold, and the current value of unvested/unexercised grants.
- What’s my timeline? When do you plan to retire? How does that align with vesting schedules and option expiration dates?
- What are the tax implications? Model the tax impact of different exercise and sale scenarios. Consider federal, California state, payroll taxes, and potential AMT.
- How does this fit my overall plan? Equity compensation is just one piece. How does it coordinate with your 401(k), IRA, taxable accounts, Social Security, and pension (if applicable)?
- What’s my sell discipline? Establish rules for when you’ll sell vested shares. Emotional attachment leads to over-concentration.
When to Work with an Advisor
Consider partnering with a fee-only fiduciary financial advisor if your equity compensation exceeds $500,000, you have complex grant structures with multiple ISO and NSO grants at different strike prices, you’re within three to five years of retirement, you’re facing large potential AMT liability, your company stock represents more than 20% of your net worth, or you’re unsure how to coordinate equity compensation with your overall retirement plan.
A qualified advisor can model different scenarios, project tax implications, and help you develop a diversification strategy that balances risk management with wealth building.
Conclusion
Understanding your equity compensation isn’t just about knowing the difference between RSUs and stock options, it’s about recognizing how these assets fit into your comprehensive retirement plan. For many professionals in their 50s and 60s, equity compensation represents the difference between a comfortable retirement and an exceptional one, but only if managed strategically.
The complexity of California taxes, AMT considerations, and the approaching Medicare IRMAA cliffs make equity compensation planning particularly important for Greater Los Angeles area professionals approaching retirement. While RSUs offer simplicity and guaranteed value, stock options provide flexibility and potentially greater upside. Each comes with specific tax implications and planning considerations that require careful attention.
Don’t be like David, reaching your mid-50s without a clear understanding of what you have. Take time now to inventory your grants, model the tax implications, and develop a strategy that addresses diversification, tax efficiency, and retirement readiness.
Is your equity compensation optimized for retirement? Mission Street Wealth provides comprehensive equity compensation planning for professionals approaching retirement. We’ll review your complete grant package, model tax scenarios, and help you integrate equity compensation into your broader retirement strategy.
Contact our Pasadena office today to schedule a consultation with a fee-only fiduciary financial advisor who specializes in retirement planning for tech professionals.