Pennsylvania Taxes on RSUs and Stock Options: A Tech Employee's Guide

Pennsylvania hosts two distinct and growing tech ecosystems. Philadelphia is home to Comcast's global headquarters — one of the largest technology and media companies in the world — along with Vanguard in neighboring Malvern, SAP's North American headquarters in Newtown Square, and a fast-growing startup scene anchored by the Drexel, Penn, and Temple university corridors. Pittsburgh has become a genuine AI and robotics research hub: Google has operated a significant engineering presence there since 2006, Duolingo (founded at Carnegie Mellon) is headquartered downtown, Aurora Innovation is pioneering autonomous trucking from its Pittsburgh base, and the Carnegie Mellon spinoff ecosystem has produced companies like Astrobotic, ANSYS, and Argo AI. Bosch's North American R&D center, Dick's Sporting Goods tech operations, and PNC Bank's technology organization add scale to the Pittsburgh market.

For tech employees in either city, Pennsylvania's tax structure has some genuinely unusual characteristics. The state income tax is a flat 3.07% — one of the lowest flat rates in the country. But Philadelphia layers on a city wage tax of 3.74% for residents and 3.43% for nonresidents, making it the highest city wage tax among major U.S. tech markets.¹ Pittsburgh residents pay a combined local earned income tax of 3.0% (2% city + 1% school district).² Pennsylvania has no state-level alternative minimum tax for ISO exercises — a meaningful advantage over California's 7% state AMT. But Pennsylvania does not conform to the federal QSBS §1202 exclusion, which means startup founders and employees cannot shield state-level gains from Pennsylvania's 3.07% tax even when their federal liability on those gains is zero.³

This guide covers how Pennsylvania taxes each type of equity compensation, the Philadelphia wage tax mechanics for in-office and remote tech employees, the QSBS non-conformity trap, the unusual PA inheritance tax structure, and what CA-to-PA relocators need to know about long-arm sourcing on existing grants.

Pennsylvania's tax structure for tech employees at a glance

RSUs in Pennsylvania

At vest: ordinary income at 3.07% (+ local tax)

When RSUs vest, the fair market value of the shares on the vesting date is ordinary income — taxed federally at your marginal rate (22–37% for most senior tech workers) and by Pennsylvania at a flat 3.07%. Your employer withholds Pennsylvania income tax via payroll; Philadelphia-based employers also withhold the applicable city wage tax rate.

Example: a senior engineer at Comcast in Philadelphia vests $250,000 of RSUs in 2026. Federal income tax at 35% marginal rate = $87,500. Pennsylvania state tax at 3.07% = $7,675. Philadelphia city wage tax at 3.74% = $9,350. Additional Medicare Tax at 0.9% = $2,250. Total combined federal + state + city tax: approximately $106,775. After-tax RSU proceeds: approximately $143,225 — before any post-vest share appreciation. Use the RSU after-tax calculator to model your specific income level, noting that the calculator's CA state column can be replaced by the combined PA + Philadelphia rates in your own analysis.

After vest: capital gains at 3.07%

Once RSUs vest, your cost basis is the FMV at vest. Post-vest appreciation is a capital gain. At the federal level, holding shares 12+ months from vest converts ordinary income treatment to preferential long-term capital gains rates (0/15/20%). Pennsylvania taxes all capital gains — short-term and long-term — at the same flat 3.07% rate. There is no Pennsylvania state tax incentive to hold RSU shares beyond the vest date.

The federal holding-period incentive remains substantial: converting post-vest appreciation from ordinary income (37%) to long-term capital gains (20%) on $200,000 of gains saves $34,000 federally. Pennsylvania's neutral treatment means that decision is driven entirely by federal rates and concentration risk — not Pennsylvania-specific factors. See the concentrated stock risk guide for a framework on when to hold vs. diversify.

ISOs in Pennsylvania: exercise is a taxable event

Pennsylvania's treatment of incentive stock options is materially different from federal law — and it's a trap for startup employees who assume ISO benefits carry over at the state level.

Under federal law, exercising an ISO in a qualifying disposition does not trigger regular income tax at the exercise date (though it can trigger federal AMT). Pennsylvania does not follow this treatment. Pennsylvania taxes the ISO bargain element — the spread between the fair market value and the strike price at exercise — as ordinary compensation income in the year of exercise, at 3.07%.⁵ This is identical to how Pennsylvania treats NSOs.

Pennsylvania ISO exercise: what this means in practice

An engineer at a Pittsburgh-based startup (Aurora Innovation, Duolingo, or a Carnegie Mellon spinoff) exercises ISOs with a $300,000 bargain element in 2026:

• Federal regular tax: $0 (qualifying disposition, exercise only triggers AMT, not regular income tax)
• Federal AMT: approximately $54,000–$58,000 (depending on income), subject to the federal AMT exemption ($90,100 single, $140,200 MFJ) and credit carryforward
• Pennsylvania state tax: $300,000 × 3.07% = $9,210 due in the year of exercise
• Pennsylvania city tax (Pittsburgh): $300,000 × 3.0% = $9,000 due in the year of exercise

The Pennsylvania liability at exercise is real, even though no federal regular income tax is due. Employees need to plan for Pennsylvania estimated tax payments in the year of a large ISO exercise — the state will not withhold from exercise proceeds automatically if the company doesn't maintain a payroll in Pennsylvania or if the employee is a post-employment option holder.

No Pennsylvania state AMT

Pennsylvania's ISO-at-exercise rule is actually less punishing than it looks compared to California, because Pennsylvania has no state-level alternative minimum tax. California imposes a 7% state AMT on the ISO bargain element at exercise — an additional $21,000 on a $300,000 bargain element — on top of the regular California income tax due when the shares are eventually sold. In Pennsylvania, you pay 3.07% on the bargain element at exercise, and then only 3.07% on any post-exercise appreciation when you sell. No parallel AMT system.⁵

For startup employees who plan to exercise ISOs and hold for federal qualifying disposition treatment, Pennsylvania's regime means paying state tax upfront (at exercise), then paying state tax again only on post-exercise appreciation at sale. California's regime means paying state AMT at exercise plus regular state income tax at sale. On a $300,000 bargain element, Pennsylvania's combined state burden is $9,210 at exercise + small percentage on post-exercise appreciation; California's combined state burden is $21,000 AMT at exercise + up to $39,900 at sale. The ISO AMT calculator models federal AMT for any scenario.

NSOs in Pennsylvania

Non-qualified stock options are taxed at exercise: the spread (FMV minus strike price) is ordinary income taxed by Pennsylvania at 3.07% in the year of exercise, plus applicable Philadelphia or Pittsburgh local tax. There is no separate AMT event for NSOs at either the federal or Pennsylvania level. Post-exercise appreciation is a capital gain taxed at 3.07% regardless of holding period. The decision to exercise NSOs before or after a liquidity event is driven by cash-flow, concentration risk, and federal ordinary vs. LTCG rate considerations — not Pennsylvania-specific factors beyond the timing of the 3.07% state tax.

ESPP in Pennsylvania

§423 Employee Stock Purchase Plans follow the federal income-recognition framework, with Pennsylvania taxing all income components at 3.07%:

• Disqualifying disposition: the ordinary income component (discount including look-back benefit) is Pennsylvania income at 3.07%; any gain above that is a capital gain, also taxed at 3.07%.
• Qualifying disposition: the smaller of (a) the discount at grant or (b) the gain over the offering-period starting price is ordinary income at 3.07% in Pennsylvania; remaining appreciation is a long-term capital gain — also 3.07% in Pennsylvania.

Since Pennsylvania gives no LTCG preference, the qualifying vs. disqualifying holding-period distinction is driven almost entirely by federal tax considerations. The ESPP guide and ESPP calculator model after-tax proceeds for both approaches.

The QSBS §1202 trap: Pennsylvania does not conform

This is the single most important Pennsylvania-specific tax issue for startup employees and early investors in Pennsylvania-based tech companies.

Under federal §1202 (as modified by the OBBBA, effective for stock acquired after July 4, 2025), qualified small business stock held for 3+ years is eligible for a federal capital gains exclusion of up to $15 million — with tiered exclusion rates of 50% at 3 years, 75% at 4 years, and 100% at 5 years. A founder or early startup employee who qualifies for 100% exclusion on $15 million of QSBS gain pays $0 in federal capital gains tax on that event.

Pennsylvania taxes the entire gain at 3.07% — the QSBS exclusion does not apply at the Pennsylvania state level.³ Pennsylvania does not conform to IRC §1202 and provides no equivalent state exclusion. Pennsylvania is one of only four economically significant states that take this position (the others being California, Alabama, and Mississippi).

What this costs at a $15M QSBS gain

A Duolingo or Aurora Innovation founder who achieves a qualifying $15M QSBS exit and lives in Pittsburgh would owe $460,500 to Pennsylvania — despite owing $0 to the federal government on those same gains. A Philadelphia-resident founder adds another $561,000 in city wage tax on that income, for a combined city + state burden of approximately $1,021,500 on federally excluded gains.

For founders at Pennsylvania-based startups, this creates a case for consulting a tax advisor well before a liquidity event. Some founders consider relocating to a QSBS-conforming or no-income-tax state before a sale closes — though California's long-arm sourcing rules (and time-in-state) make this analysis complex. See the stock options and QSBS guide for the full §1202 federal mechanics.

Philadelphia wage tax: mechanics for tech employees

The Philadelphia wage tax is a broad-based employer withholding on all compensation — wages, salaries, equity comp, and other earned income. It is separate from the Pennsylvania state income tax and operates as follows:

Who pays what rate

• Philadelphia residents: 3.74% on all earned income regardless of where the work is performed. A Comcast engineer who lives in the city pays 3.74% even on compensation from work travel or work-from-home days spent outside Philadelphia.¹
• Philadelphia nonresidents (suburban commuters): 3.43% on compensation earned in Philadelphia. An engineer who lives in the Main Line suburbs but works at Comcast's downtown offices pays 3.43% on days physically worked in Philadelphia.¹
• Remote workers outside Philadelphia: if you live and work entirely outside Philadelphia, no city wage tax applies — even if your employer is headquartered there. Philadelphia follows a physical-presence rule, not a convenience-of-employer rule (unlike New York's approach).

RSU and equity income in Philadelphia

RSU vest income is earned compensation — Philadelphia wage tax applies at the resident or nonresident rate depending on your residency status, using the same grant-to-vest apportionment approach that applies for state sourcing. If you worked in Philadelphia during part of the RSU vesting period, that fraction of each vest event is Philadelphia-sourced compensation subject to the city wage tax.

RSU vest example: Philadelphia resident vs. suburban commuter

Pennsylvania inheritance tax: no exemption threshold

Pennsylvania's inheritance tax is one of the most unusual features of the state's tax code — and a material planning consideration for tech employees building meaningful equity portfolios.

Unlike an estate tax (which applies to the estate above a threshold), Pennsylvania's inheritance tax applies to every dollar transferred at death, based on the relationship between the decedent and the beneficiary:⁶

• Surviving spouse: 0% (exempt)
• Children, grandchildren, parents (lineal heirs): 4.5% — no exemption, applies from dollar 1
• Siblings: 12%
• All other beneficiaries (including non-married partners): 15%
• Special rule: property passing from a child age 21 or younger to a parent is exempt at 0%

There is no dollar threshold below which inheritance tax doesn't apply (unlike the federal $15M estate tax exemption). A tech employee with a $2M equity portfolio who dies leaves a Pennsylvania inheritance tax bill of approximately $90,000 to their children — even before any federal estate tax exposure (which at $2M, there is none under current OBBBA law).

Impact on tech employees with RSUs and startup equity

• RSU unvested shares: acceleration policies vary by employer (about 63% of public companies accelerate vesting at death; see the estate planning guide). Accelerated shares that vest at death are included in the Pennsylvania inheritance tax calculation.
• Qualified retirement accounts (401k, IRA): Pennsylvania does not apply inheritance tax to retirement accounts passing to a spouse, but children inheriting IRA/401k balances face the 4.5% rate.
• 5% early payment discount: Pennsylvania offers a 5% discount on inheritance tax paid within 3 months of the decedent's death. For a $500,000 estate passing to children, this saves $1,125. Not transformative, but worth noting for estate administrators.
• No state-level estate tax: Pennsylvania eliminated its state estate tax entirely. There is no Pennsylvania version of the federal estate/gift/GST regime. The only Pennsylvania transfer tax at death is the inheritance tax described above.

Joint ownership and beneficiary designations

Jointly-owned property passes outside of probate but is still subject to Pennsylvania inheritance tax if the co-owner inherits as a non-spouse. Retirement accounts and brokerage accounts with properly designated beneficiaries avoid Pennsylvania probate but do not avoid inheritance tax. Trust structures do not eliminate Pennsylvania inheritance tax either — the tax follows the transfer, not the mechanism. The estate planning guide for tech employees covers the beneficiary designation framework that matters regardless of Pennsylvania inheritance tax.

Moving from California to Pennsylvania

California long-arm sourcing applies to existing grants

California taxes RSU income based on the proportion of the grant-to-vest period worked in California, regardless of where you live when shares vest. A senior engineer who spent 3 of 4 years at a California office before relocating to Pittsburgh has 75% of each remaining vest event on that grant allocated as California-source income — subject to California income tax at up to 13.3%. Pennsylvania simultaneously claims the Pennsylvania-apportioned portion. The result is partial double-state-tax exposure, partially offset by the credit for taxes paid to other states, until all grants issued before the move finish vesting.

Pennsylvania uses a grant-to-vest apportionment approach for nonresidents in reverse: if you perform services in Pennsylvania during part of a vesting period and then leave, Pennsylvania retains taxing authority over the Pennsylvania-apportioned share of future vests on those grants.

State income tax comparison: California vs. Pennsylvania (tech worker)

The California-to-Pennsylvania move provides significant income tax relief for RSU-heavy comp — but Philadelphia residents do not get the full benefit of Pennsylvania's competitive 3.07% rate. Engineers working in Philadelphia pay a combined 6.81% state + city rate, which still undercuts California by roughly 6.5 percentage points but is meaningfully higher than suburban Pennsylvania's 3.07%.

Philadelphia- and Pittsburgh-area employer considerations

Comcast / NBCUniversal (Philadelphia)

Comcast employees receive RSUs subject to both the 3.07% Pennsylvania flat tax and the 3.74% Philadelphia city wage tax for city-resident employees. Comcast's equity structure has historically included performance-based RSUs tied to operating metrics — vest amounts can vary substantially from target depending on performance multipliers. Philadelphia nonresident employees working at Comcast's downtown campus pay the 3.43% nonresident wage tax rate on their Comcast-source income including RSU vests attributable to time worked in the city.

Vanguard (Malvern, PA — outside Philadelphia)

Vanguard is headquartered in Malvern in Chester County, outside Philadelphia. Employees working in Malvern pay Pennsylvania state income tax at 3.07% and Chester County local EIT (approximately 3% combined municipal and school district), but no Philadelphia city wage tax — a meaningful difference for senior investment and technology staff with significant RSU grants. Vanguard is employee-owned, so equity comp structures differ from typical public-company RSUs.

Duolingo (Pittsburgh)

Duolingo went public in 2021 (DUOL) and remains headquartered in Pittsburgh. Employees at Duolingo receive RSUs subject to Pennsylvania's 3.07% rate plus Pittsburgh's 3.0% local EIT for Pittsburgh-resident employees. No Philadelphia wage tax applies. Duolingo does not appear to offer an ESPP. For ISO holders from the pre-IPO era, Pennsylvania's exercise-as-ordinary-income rule means any exercise of pre-IPO ISOs triggered Pennsylvania ordinary income tax at the time of exercise — a point relevant for cost basis tracking.

Aurora Innovation (Pittsburgh)

Aurora is publicly traded (AUR) and develops autonomous trucking technology from its Pittsburgh base. Early employees and founders with ISOs from the pre-IPO era should note Pennsylvania's exercise-as-ordinary-income treatment and the QSBS non-conformity: any QSBS-eligible shares that were federally excludable under §1202 are fully taxable by Pennsylvania at 3.07%. Pittsburgh local EIT (3.0%) applies for Pittsburgh-resident employees.

Planning strategies for Pennsylvania tech employees

1. Account for Pennsylvania ISO tax at exercise

If you're at a pre-IPO company in Pittsburgh or Philadelphia, model the Pennsylvania cash-flow cost of ISO exercises before committing to an exercise schedule. The federal AMT and credit mechanism may allow some federal AMT recovery in future years; Pennsylvania does not have a comparable AMT credit system. The Pennsylvania tax at exercise (3.07%) is a permanent cost, not a credit. Build estimated tax payments for Pennsylvania into your ISO exercise year budget.

2. QSBS: pre-exit residency analysis

If you hold QSBS-eligible shares and expect a qualifying exit, the Pennsylvania non-conformity means you will owe 3.07% to Pennsylvania on gains that are federally excluded. For large exits ($5M+), this is a planning conversation — not necessarily a reason to leave Pennsylvania, but a factor in pre-sale liquidity modeling. Consult a tax advisor with startup equity experience well before the anticipated closing date.

3. No Pennsylvania state AMT — exercise ISOs efficiently

Pennsylvania has no state AMT. The ISO AMT calculator models federal AMT exposure and lets you identify the maximum ISO bargain element you can absorb in a given year before crossing the federal AMT exemption threshold. Pennsylvania's ordinary income tax at exercise (3.07%) is a fixed cost — plan estimated tax payments accordingly, but there is no separate Pennsylvania AMT calculation layered on top.

4. Max tax-advantaged accounts to reduce Pennsylvania taxable income

Traditional 401(k) contributions reduce Pennsylvania taxable income at 3.07% per dollar. For a senior engineer at Comcast maxing the $24,500 deferral in 2026, the Pennsylvania state tax saving is approximately $752 — plus the federal saving at your marginal rate. HSA contributions ($4,400 single, $8,750 family for 2026) reduce federal taxable income but not Pennsylvania income — Pennsylvania does not recognize HSAs for state income tax purposes. The Mega Backdoor Roth calculator models long-term value of after-tax 401(k) contributions at various deferral levels.

5. Inheritance tax planning: beneficiary designations matter

Pennsylvania's 4.5% inheritance tax on lineal heirs applies from dollar 1 — no exclusion. For tech employees with $500K–$5M in equity portfolios, this is a material estate planning consideration. The simplest step is ensuring all retirement accounts (401k, IRA, Roth IRA) and brokerage accounts have designated beneficiaries rather than passing through your estate — this doesn't eliminate Pennsylvania inheritance tax, but it does avoid probate and simplifies administration. The estate planning guide covers beneficiary designation strategy and trust structures relevant to equity-heavy estates.

6. DAF strategy for concentrated equity positions

Donating RSU shares (held 12+ months from vest, thus long-term capital gains at the federal level) directly to a donor-advised fund eliminates both the federal capital gain and the Pennsylvania capital gain event entirely. You receive a federal charitable deduction at full FMV; Pennsylvania follows the federal charitable deduction for this purpose. For Pennsylvania tech employees with concentrated employer stock and charitable intent, this is the most tax-efficient way to diversify. See the DAF strategy guide for implementation mechanics on RSU and ESPP shares.

7. Suburban vs. urban: where you live matters for Philadelphia wage tax

The 3.74% Philadelphia city wage tax adds a meaningful annual cost relative to suburban Pennsylvania for engineers with high RSU income. On $300,000 of annual RSU vests, the city wage tax alone is $11,220. Over a 10-year career in a high-growth tech role, the difference between living in Philadelphia versus living in a suburban town that allows you to skip the city wage tax entirely accumulates to six figures — offset partly by urban convenience and housing cost differences. This is worth running the numbers on as part of a rent-vs-buy decision in the Philadelphia market.

What a fee-only advisor can help you model

• Year-by-year ISO exercise strategy accounting for federal AMT, Pennsylvania ordinary income tax at exercise, and Pittsburgh or Philadelphia local EIT
• QSBS exposure analysis for founders and early employees at Pennsylvania-based startups — quantifying the Pennsylvania tax cost on federally excluded gains before a sale
• Multi-state sourcing for California-to-Pennsylvania movers: which grants still carry CA long-arm exposure, and how the CA-PA credit interaction works
• Philadelphia wage tax residency optimization: modeling the tax differential between city and suburban living on your specific RSU pipeline
• Pennsylvania inheritance tax planning: beneficiary designations, joint ownership structures, and trust approaches for equity-heavy estates
• Traditional 401(k) vs. Roth 401(k) decision given Pennsylvania's 3.07% rate on both current deductions and future withdrawals (Pennsylvania does not tax qualified retirement distributions — see note below)