Redwood City, CA
Tax preparation and planning for Oracle and Electronic Arts employees, 280 corridor pre-IPO equity holders, biotech executives, and Redwood City households with cross-bay commuter or mid-year residency complexity. RSU, PSU, ISO, and ESPP planning handled by one team. Open 7 days a week.
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Redwood City sits at the center of one of the most equity-dense employment corridors on the Peninsula. Oracle's Redwood Shores campus houses thousands of engineers, product managers, and executives whose annual W-2 income is dwarfed by the RSU and PSU tranches vesting alongside it. Electronic Arts' headquarters a few blocks away creates a parallel equity-compensation population with its own twist: performance share units that pay out in a range from zero to 200% of target depending on EA's fiscal-year results. Factor in the 280 corridor startup population from Box to Snowflake to the next wave of pre-IPO companies, and Redwood City produces some of the most technically complex personal tax returns in California.
We are Silicon Valley Tax LLC, a full-service tax and accounting firm with CPAs on the team, based in San Jose and 25 miles south of Redwood City on 101. This page covers the tax issues we handle every season for Redwood City clients: the Oracle supplemental withholding gap, EA's PSU mechanics and ESPP rules, biotech IPO equity from the Genomic Health and Natera lineage, cross-bay commuter and mid-year residency moves, and the ISO and QSBS planning that defines pre-IPO wealth for 280 corridor employees.
Three forces converge in Redwood City that make returns here substantively more complex than a generic Peninsula filing.
Oracle compensation density. Oracle's Redwood Shores campus is the firm's global headquarters and houses its highest-compensated engineering and executive population. Base salaries for senior engineers and principal architects routinely run between $200,000 and $350,000 before equity. RSU vesting schedules can add another $200,000 to $800,000 per year for senior individual contributors, and director or vice president compensation often clears $1 million in total taxable income. The withholding rate Oracle applies to those RSUs, 22% federal on the first million of supplemental wages, is designed for middle-income filers. It is systematically wrong for most of Oracle's Redwood Shores workforce.
EA performance share complexity. Electronic Arts does not issue plain RSUs. The PSU structure EA uses means the actual share delivery is contingent on meeting annual or multi-year performance goals. A PSU grant with a target of 10,000 shares might deliver anywhere from zero shares to 20,000 shares depending on EA's performance against its published metrics. That variability makes it almost impossible to plan withholding correctly based on the grant notice alone. Producers and game leads who have carried-interest-style upside tied to project completion or title revenue also face ordinary income treatment on those payments at the time they are received, not capital gains treatment.
280 corridor pre-IPO population. Highway 280 between Redwood City and Los Altos Hills carries one of the highest concentrations of venture-backed companies per mile in the world. Box, Snowflake's Peninsula engineering offices, Shutterfly, and the next cohort of Series C and D companies employ thousands of Redwood City residents holding ISOs, restricted stock with 83(b) elections, and QSBS-eligible shares. The planning decisions made in the two years before an IPO, particularly around ISO exercise timing and AMT exposure, routinely determine whether an employee comes out of the event with a seven-figure tax bill or a manageable one.
Oracle operates on a rolling four-tranche RSU vesting schedule, with grants typically vesting 25% per year over four years. For a senior engineer with a $1.2 million grant made in a grant year, that means roughly $300,000 of ordinary income per tranche, every year, on top of base salary. The withholding math is where the problem starts.
Federal tax law requires employers to withhold at the 22% supplemental rate on all supplemental wage payments, including RSU vesting, up to the first $1 million of aggregate supplemental wages per calendar year. Payments above that threshold are withheld at 37%. Most Redwood City Oracle employees sit in the 35% or 37% federal bracket because their total income, including base salary and prior RSU vests, crosses the $609,350 threshold for single filers (2025 figures). At 22% withholding on a $300,000 vest, Oracle is collecting $66,000. At the actual 35% marginal rate, the correct federal figure is $105,000. The gap is $39,000 on that single tranche, and a four-tranche year creates a $156,000 federal underpayment before California is even counted.
California compounds the problem. California withholds at 10.23% on supplemental wages. For a California resident in the top 13.3% bracket, the gap on the same $300,000 tranche is roughly $9,000 per vest, or $36,000 annualized. The combined federal and California shortfall on a typical Oracle principal engineer's annual RSU vesting can easily run $180,000 to $220,000 in a year where vests are heavy.
The solution is quarterly estimated tax payments. Under the Section 6654 safe harbor, you owe no underpayment penalty if you pay the lesser of 100% of your prior year total tax liability (110% if prior year AGI exceeded $150,000) or 90% of the current year's actual liability. We build an estimated payment schedule for every Oracle client at the start of the year using their projected vest dates, the grant-date FMV, and their expected marginal rate. That schedule then adjusts after each vest based on the actual W-2 supplement reporting.
Oracle also issues PSUs to a subset of its leadership and principal engineering population. The withholding gap on PSUs is harder to project because the number of shares delivering is not known until performance is certified, typically 60 to 90 days after the fiscal year ends. A director-level PSU with a 15,000-share target could deliver 7,500 shares at 50% performance or 30,000 shares at 200% performance. We recommend building estimates around the target number and then making a catch-up Q4 estimated payment once performance is certified and the actual deliver quantity is known.
Electronic Arts uses Performance Share Units as its primary equity vehicle for production staff, leads, and executives. The tax treatment at vesting is the same as RSUs: ordinary income equal to the number of shares delivered multiplied by the market price on the delivery date, reported on the W-2 and subject to FICA. The complexity is upstream, in projecting and managing the gap.
EA's PSU grants typically reference a combination of annual operating earnings metrics and relative total shareholder return against a peer group. The payout range is generally 0% to 200% of target. A producer-level grant with a 5,000-share target at a $130 stock price has a target value of $650,000 but a maximum potential value of $1.3 million. If that maximum vests, the W-2 income on delivery date is $1.3 million, the federal withholding at 22% is $286,000, and the actual federal tax owed at 37% is $481,000. The $195,000 gap is real and it is due in April.
EA producers and game leads who earn carried-interest-style payments tied to game revenue or project completion milestones should not confuse those payments with capital gains. In virtually all employment structures, bonuses tied to project revenue or title performance are ordinary compensation under IRC Section 61, not carried interest in the partnership-law sense. The Section 1061 three-year holding period rules that can reclassify certain fund-manager carry to ordinary income apply only when you hold a partnership profits interest, not when you receive an employment bonus denominated by project revenue. If you have received any documentation from EA describing a payment as "participation" or "profit sharing" on a specific title, bring that documentation to a review before assuming capital gains treatment.
EA's Section 423 ESPP runs on a 24-month offering period with a 15% purchase discount and a lookback provision. Employees who hold shares for the qualifying period, two years from the offering date and one year from the purchase date, pay ordinary income only on the lesser of the discount or actual gain, with any additional appreciation taxed as long-term capital gain. Most EA employees sell within 30 days of purchase and trigger a disqualifying disposition. The brokerage usually under-reports the income because it only knows the sales price and cost basis, not the ordinary income component. Your W-2 may or may not already include the ESPP compensation income. We reconcile the brokerage 1099-B against the W-2 supplement data every year for ESPP clients.
Redwood City and the surrounding Redwood Shores corridor have produced several significant biotech and data infrastructure liquidity events. Natera (NTRA) listed in 2015 and has been a significant employer in the area. Genomic Health, founded in Redwood City, was acquired by Exact Sciences in 2019 for roughly $2.8 billion. Equinix, a data center REIT headquartered in Redwood City, has been public for decades but continues to grant equity to its engineering and operations leadership. Each of these produces distinct tax patterns worth understanding before you receive the shares.
Pre-IPO ISO holders. Employees who received ISOs from companies like Natera before the IPO faced a choice at or before listing: exercise and start the long-term holding period clock, or wait for the post-IPO window and potentially sell immediately. Exercising before the IPO at a low 409A valuation minimizes the AMT preference item. Waiting to exercise after the IPO at market prices creates a larger AMT preference. Selling immediately after exercise triggers a disqualifying disposition, eliminating the potential long-term capital gain treatment and converting the entire spread into ordinary income. The right answer depends on the stock price trajectory, the AMT exemption available, and whether the taxpayer has prior year AMT credit to absorb.
Acquisition transactions. When Exact Sciences acquired Genomic Health, option holders and restricted stockholders faced an accelerated vesting or cash-out event. Tax timing in acquisitions depends entirely on the deal structure. A cash merger triggers ordinary income or capital gain recognition in the year of the close. A stock-for-stock merger under IRC Section 368 is generally tax-deferred, with the acquirer's shares taking the cost basis and holding period of the target shares. Double-trigger acceleration, where vesting is contingent on both the change-of-control and a subsequent termination, often means shares vest in a different tax year than the merger closes. We have seen Genomic Health legacy stockholders who did not realize they had a taxable event in the acquisition year until an IRS notice arrived two years later.
REIT equity from Equinix. Equinix equity follows standard RSU tax treatment at vesting. The distinction for Equinix shareholders is at the dividend level: Equinix dividends are classified as ordinary income, not qualified dividends, because REITs are required to distribute at least 90% of taxable income and are not subject to corporate-level tax. Holding Equinix shares in a taxable brokerage account means those dividends are taxed at ordinary income rates, not at the 15% to 20% qualified dividend rate. Inside a Roth IRA or traditional IRA, the distinction disappears because distributions from the retirement account, not the underlying dividends, are what get taxed.
Redwood City sits at a geographic inflection point. Many residents commute north to San Francisco, south to San Jose, or east across the San Mateo Bridge to the East Bay. A meaningful portion of the Redwood City tech workforce has also relocated mid-year: Oracle reorganizations sometimes move teams to Austin or Nashville, EA has offices in multiple states, and the pandemic normalized Bay Area departures to Nevada, Texas, and Washington. Each scenario creates a different California income tax outcome.
Remote workers living in Nevada or other no-income-tax states. California's Franchise Tax Board does not use physical presence of the employer as the sole test of California source income. If you are a Redwood City-based employee who moves to Nevada and begins working remotely for Oracle full-time, Oracle's California presence does not by itself make your wages California-source income. What matters is where you perform the services. Days worked in Nevada are Nevada wages. But California will assert sourcing on any RSU vesting attributed to the California-service period under the time-apportionment rules in FTB Publication 1005. RSUs granted during your California employment and vesting after your departure are split proportionally based on the California grant-to-vest period versus total grant-to-vest period.
Part-year residency returns. If you moved to or from California during the year, you file Form 540NR and allocate income using the Schedule CA columns for resident and non-resident periods. Wages are allocated by work days, not by calendar days in residence. RSU vesting after the move is allocated using the FTB's tracing rules. Stock sale proceeds from shares granted before the move are California-source to the extent the pre-move service period bears to the total service period. The Franchise Tax Board scrutinizes these returns for high-income earners and routinely requests documentation of move dates, lease agreements, and employer payroll records.
Commute-only situations. If you live in Redwood City but work for a San Francisco or East Bay employer, no multi-state income allocation is required as long as you remain a California resident. California taxes your worldwide income as a resident, and your employer withholds California tax regardless of where the employer is located. The reverse is also true: if you live in the East Bay and commute to Redwood City to work for Oracle, you are a California resident paying California tax on all income. There is no reciprocity issue within California, and no separate Bay Area city income tax.
Highway 280 from Redwood City through Los Altos Hills has produced more venture-backed startup wealth in the last decade than any comparable stretch of road in the country. Box went public in 2015. Snowflake's IPO in 2020 was the largest software IPO in history at that point. The next cohort is building now. For Redwood City residents holding pre-IPO equity, the decisions made in the 12 to 24 months before an IPO or acquisition determine whether the liquidity event generates a tax bill the household can absorb or one that requires selling shares at a time that is operationally or legally constrained.
ISO early exercise and the 83(b) election. Many early-stage startups grant ISOs that are immediately exercisable, meaning you can buy the shares before they vest. Exercising unvested ISOs starts both the ISO holding period clock and, if you file an 83(b) election within 30 days of the grant, pegs the ordinary income inclusion to the grant-date spread, which for most early employees is zero or near zero because the exercise price equals the 409A fair market value. The 83(b) election converts future appreciation into capital gain measured from the exercise date rather than the vest date. If the company fails, you lose the exercise cost with no tax offset other than a capital loss. If it succeeds, you save at the difference between your capital gains rate (0% to 20%) and your ordinary income rate (up to 37%).
QSBS under Section 1202. Shares in a C-corporation that met the qualified small business criteria at the time of issuance, including gross assets under $50 million before the stock was issued, can qualify for the Section 1202 exclusion. If you have held the shares for more than five years and the company remains a C-corp, you can exclude up to $10 million of capital gain from the sale (or 10 times your original basis, whichever is greater) from federal tax entirely. The exclusion does not apply to California tax. Proper documentation of the QSBS qualification requires a Section 1202 certification letter from the company and original stock certificates or capitalization table records showing the original issuance date and 409A at that time. We verify the qualification criteria before anyone files a return claiming the exclusion.
ISO exercise sequencing and AMT. The AMT preference item created by ISO exercise, the spread between exercise price and 409A at exercise, is not taxed in the year of exercise under the regular income tax. It is added back to calculate alternative minimum taxable income. For 2025, the AMT exemption for single filers is $137,000 and phases out above $1,239,700 of AMTI. A Redwood City employee with $200,000 of W-2 income who exercises $500,000 of ISO spread will have AMTI of approximately $700,000 before the phaseout, well above the full exemption, meaning a substantial AMT liability in the exercise year with no corresponding receipt of cash. Spreading exercises across multiple tax years, exercising in years when W-2 income is low, and using the AMT credit in subsequent years to offset regular tax are the primary tools.
Carlos is a Principal Engineer at Oracle in Redwood Shores, a California resident, single, and in his ninth year at the company. His 2025 picture:
Oracle compensation: $280,000 W-2 base salary, three RSU tranches vesting in 2025 totaling $390,000 in fair market value as of vest dates, and a PSU grant from 2022 that delivered 8,200 shares at maximum performance (200% of 4,100-share target) when performance was certified in February 2025, adding $220,000 at the February delivery price.
280 corridor side: Carlos exercised 20,000 ISOs in a pre-IPO startup in June 2025 at $1.50 per share exercise price, with a 409A FMV of $8.00 per share on exercise date. He filed an 83(b) election when the ISOs were granted three years earlier, exercising unvested shares then at $0.30, and the remaining ISOs are now vested. The company has filed its S-1 and expects to price within the next 12 months.
What his return looks like done correctly:
1. Total W-2 ordinary income of $890,000 from Oracle: $280K base, $390K RSU vests, $220K PSU delivery. Federal marginal rate is 37%. Oracle withheld at 22% federal on the $610K supplement, collecting $134,200. The actual federal tax on the supplement at 37% is $225,700. Gap: $91,500 federal.
2. California ordinary income on the same $890,000 at 13.3% = $118,370. California withheld at 10.23% on the supplement = $62,403. Gap: $55,967 California.
3. Combined withholding gap of $147,467. We build Q1 through Q4 estimated payments to cover the shortfall plus a buffer and re-run after the February PSU delivery when the exact share count is known.
4. ISO exercise AMT. The June exercise of 20,000 shares at a $6.50 spread creates a $130,000 AMT preference item. Carlos's AMTI after adding the preference is approximately $1,020,000 (W-2 income plus the AMT preference). His AMT exemption phases out at this level. We model the AMT using Form 6251 and determine he owes approximately $34,000 of AMT above his regular tax in 2025. He must fund this by April. The $34,000 becomes an AMT credit carryforward usable against regular tax in future years.
5. The prior 83(b) election ISOs, exercised at $0.30 when the 409A was $0.30, have a basis of $0.30 per share. If the IPO prices above $0.30 and he holds through the two-year/one-year holding periods, the entire appreciation from $0.30 to sale price is long-term capital gain.
What it would look like missed: Without a withholding gap analysis, Carlos files in April expecting a small refund and discovers a $147,000 combined balance due. With an underpayment penalty at the federal rate plus 3 points, the penalty on a $91,500 federal underpayment for the full year is approximately $5,500 to $7,000 depending on the quarter distribution. The AMT surprise adds another $34,000 nobody budgeted. The total April shock: $188,000.
Our office at 2051 Junction Ave, Suite 200 in San Jose is a 25-minute drive from downtown Redwood City via 101 south or 280 south. We are open Monday through Friday from 9am to 6pm with extended hours during tax season. Redwood City clients are also welcome to handle the full engagement virtually through our secure client portal. We typically schedule a mid-year planning call in September or October so PSU certification numbers, ISO exercise decisions, and estimated payment adjustments are handled before the fiscal year closes, not during the April scramble.
Office: 2051 Junction Ave, Suite 200, San Jose, CA 95131
Phone: (408) 383-9870
Email: admin@siliconvalleytax.co
Hours: Mon-Fri 9am-6pm
Serves: Redwood City 94061, 94062, 94063, 94065 (Redwood Shores); San Carlos, Belmont, Foster City, Menlo Park, San Mateo, and the broader 280 corridor.
Oracle RSU income is reported as ordinary compensation on your W-2 in the year each tranche vests. Oracle includes the fair market value of shares on the vest date in Box 1 wages and withholds at the 22% federal supplemental rate on the first $1 million of supplemental wages per year (37% above that). If your marginal federal rate is 35% or 37%, which it is for most senior Oracle engineers and directors, the withheld amount is short by 13 to 15 percentage points on every vest. You must make up that difference through quarterly estimated payments or face an underpayment penalty at filing.
A Restricted Stock Unit (RSU) vests on a fixed schedule and delivers a fixed number of shares. A Performance Share Unit (PSU) delivers shares only when performance conditions are met, typically revenue or earnings targets. For federal income tax, both are taxed as ordinary compensation when the shares vest and are delivered. The practical difference is that you cannot predict the exact PSU payout in advance. A PSU that vests at 200% of target delivers twice the shares, twice the W-2 income, and twice the potential withholding shortfall versus the target assumption. Planning must account for the full payout range, not just the target.
The supplemental withholding gap is the difference between what your employer withholds on RSU or PSU income (22% federal, 10.23% California) and what you actually owe at your marginal rate (up to 37% federal and 13.3% California). On a $500,000 vest, the federal gap alone can exceed $70,000. The cleanest fix is quarterly estimated tax payments under the safe harbor in IRC Section 6654: pay the lesser of 100% of prior year tax liability (110% if prior year AGI exceeded $150,000) or 90% of current year liability. Payments are due April 15, June 15, September 15, and January 15.
Incentive Stock Options (ISOs) have no regular income tax event at grant or at exercise. The spread between the exercise price and fair market value on the exercise date is an Alternative Minimum Tax (AMT) preference item under IRC Section 56(b)(3). If you exercise a large ISO block in a single year, the spread can push you into AMT. Regular income tax becomes due only when you sell the shares. To qualify for long-term capital gains rates on the sale, you must hold the shares at least two years from the grant date and at least one year from the exercise date. Selling before those thresholds triggers a disqualifying disposition and the spread is reclassified as ordinary income.
California taxes you as a resident on all income from January 1 through your move date, and as a non-resident on California-source income after you leave. You file Form 540NR and allocate wages using days worked in California versus total days worked. RSU vests occurring after you leave but whose grant or service period partly covered California work are sourced back to California on a time-apportionment basis under California Revenue and Taxation Code Section 17502. Simply mailing a Nevada address change to Oracle does not eliminate California tax on RSUs earned during your California service period. The Franchise Tax Board has audited this pattern aggressively.
Exercising ISOs pre-IPO creates an AMT preference item equal to the spread on the exercise date, even if you cannot sell the shares. For 2025, the AMT exemption for single filers is $137,000 and phases out above $1,239,700 of alternative minimum taxable income. A Redwood City employee with $200,000 of W-2 income who exercises $500,000 of ISO spread will have AMTI well above the full exemption, creating a substantial AMT liability payable in April with no corresponding cash receipt. Spreading exercises across multiple tax years and modeling the 409A trajectory against the likely IPO price are the core planning tools. The AMT paid becomes a credit carryforward usable against regular tax in future years.
EA's Employee Stock Purchase Plan is structured as a qualified Section 423 ESPP. If you hold the shares for more than two years from the offering date and more than one year from the purchase date, you have a qualifying disposition: the smaller of the actual discount or the gain is ordinary income, and any additional gain above the discount is long-term capital gain. If you sell before those holding periods, you have a disqualifying disposition and the full discount at purchase is ordinary income reported on your W-2. Most EA employees sell shortly after purchase and trigger the disqualifying disposition. The brokerage 1099-B often under-reports the compensation component, so reconciling the brokerage form against the W-2 supplement is essential.
The supplemental withholding gap does not send a warning notice before April. The AMT on an ISO exercise year does not adjust itself down because you did not have liquidity. The California time-apportionment rules on RSU vesting do not care that you thought the Nevada move was clean. The right time to scope a Redwood City tax engagement is mid-year, when there is still time to set up estimated payments, model the AMT on a planned ISO exercise, and document a move date before the Franchise Tax Board asks for evidence. Whether you live in Redwood Shores near the Oracle campus, in Emerald Hills, or in the Roosevelt neighborhood closer to downtown, we serve the 94061, 94062, 94063, and 94065 zip codes. Book a complimentary consultation and we will review your equity compensation summary, last filed return, and any planned liquidity events before quoting the engagement. Cooper Hathaway and Alfonso Nuñez, both Managing Partners of Silicon Valley Tax LLC, personally review every new client situation before work begins.
Oracle RSU gaps, EA PSU vesting, 280 corridor ISO timing, cross-bay residency moves. One firm, one engagement, no handoffs. Also serving nearby Palo Alto and Mountain View.