State and Federal Burden Distribution

The synthesis sub-domain

Six sub-domains analyze specific instruments. This one steps back. It covers the federal and state instruments above the Philadelphia-specific layer — [FICA](/paul/campaign/empower/glossary/#fica), federal income tax post-[OBBBA](/paul/campaign/empower/glossary/#obbba), the Pennsylvania flat 3.07% personal income tax, the 8% Philadelphia sales tax — and synthesizes how all the layers compound for an actual PA-3 household. A warehouse worker in Haddington at $32,000 with one qualifying child pays roughly 16-17% of gross earnings in tax before her federal refund arrives — across five separate tax systems administered separately, with no single statement showing her total obligation. ITEP's 7th Edition Who Pays? documents that Pennsylvania's lowest-income 20% pay 15.1% of income in combined state and local taxes — the highest rate on low-income families of any state. PA-3, with household incomes concentrated in the lower quintiles, sits at the sharp end of that distribution.

Legal Architecture

Constitutional foundation

16th Amendment. Grounds the federal income tax framework — OBBBA-modified TCJA provisions, the EITC (cross-reference: EITC, VITA & the new state credit), and FICA's income taxation element.

Article I §8 — Taxing and Spending Clause. FICA as a payroll tax. Social Security and Medicare programs as spending funded through payroll taxes.

PA Constitution, Article VIII §1 — Uniformity Clause. The flat PA Personal Income Tax rate is a legislative choice consistent with uniformity-clause precedent, not a constitutional requirement. (A progressive PA PIT rate would face the same uniformity questions as a progressive Philadelphia wage tax — see Wage Tax.)

Federal statutory layer

FICA (26 U.S.C. §§ 3101-3128).

  • Social Security: 6.2% employee / 6.2% employer.
  • Wage base: 2024 = $168,600; 2025 = $176,100; 2026 = $184,500.
  • Medicare: 1.45% employee / 1.45% employer; no wage base cap.
  • Additional Medicare Tax: 0.9% on earned income above $200,000 single / $250,000 MFJ.
  • SE tax: 15.3% on net SE income up to the Social Security base; § 164(f) above-the-line deduction reduces effective rate to approximately 14.13%.
  • Statutory stability: HIGH. Administrative vulnerability: LOW (benefit processing ministerial).

Federal Income Tax — post-OBBBA (2025 and forward, permanent):

  • Brackets (2025): 10%, 12%, 22%, 24%, 32%, 35%, 37%. Top bracket at $626,350 single / $751,600 MFJ.
  • Standard Deduction (2025): $15,750 single / $31,500 MFJ. Additional $2,000 for seniors (single) / $1,600 (joint per eligible spouse).
  • New senior deduction (2025-2028): $6,000 per qualifying senior, phased out above $75,000 single / $150,000 MFJ MAGI.
  • Child Tax Credit (permanent): $2,200 per child; $1,700 refundable (indexed).
  • § 199A passthrough deduction: 20%, permanent.
  • SALT cap: raised to $40,000 through 2029; reverts to $10,000 in 2030.
  • EITC: unchanged from pre-OBBBA structure (see EITC sub-domain).

Statutory stability: TCJA individual provisions now HIGH (permanent). Administrative vulnerability: LOW for rates / brackets; HIGH for delivery of refundable credits (see EITC sub-domain).

State statutory layer

PA Personal Income Tax (PA PIT), 72 P.S. § 7101 et seq.

  • Flat rate: 3.07% (stable since 2004).
  • Nine income classes; Classes 1 (wages) and 3 (net profits) are primary for most PA-3 earners.
  • Retirement income exemption: Social Security, pensions, IRA / 401(k) distributions entirely exempt. Primary distributional mechanism discussed below.
  • Statutory stability: HIGH. Administrative vulnerability: LOW.

PA Sales and Use Tax (PA SUT), 72 P.S. § 7201 et seq.

  • State rate: 6%.
  • Philadelphia combined: 8% (6% state + 2% Philadelphia local).
  • Exemptions (§ 7204): unprepared food, prescription drugs, most clothing, residential utilities.
  • Structurally regressive — consumption-based; lower-income households spend a higher share of income on taxable consumption.

PA Corporate Net Income Tax (PA CNIT), 72 P.S. § 7401. 2025 rate: 7.99% (declining; see BIRT for the full schedule to 4.99% in 2031).

PA Department of Revenue. Administers PA PIT and PA SUT; separate from Philadelphia Department of Revenue.

Working Pennsylvanians Tax Credit (WPTC). See EITC sub-domain. First state EITC in PA history, 10% of federal, up to $805, effective Tax Year 2025.

Local layer

Philadelphia wage tax, BIRT, property tax — pointers to those sub-domains. This sub-domain does not restate; it synthesizes the cumulative layering of all instruments reaching the same household.

Constituent profiles

Constituent 1: Warehouse worker — Haddington (cumulative burden illustration)

Female, 41, renter. $32,000 annual wages. One qualifying child. A typical PA-3 lower-income wage earner.

Tax burden by layer (2025 law):

  • Philadelphia wage tax: $32,000 × 3.74% ≈ $1,197 (without Schedule SP refund; if she navigates Schedule SP successfully, effective rate 1.5% = $480)
  • PA PIT: $32,000 × 3.07% ≈ $983
  • Federal FICA (employee share): $32,000 × 7.65% ≈ $2,448
  • Federal income tax: $32,000 − $15,750 standard deduction = $16,250 taxable income; approximately $1,680 in federal income tax; EITC for 1 qualifying child ≈ $4,328; net federal income tax ≈ negative $2,648 (refund)
  • Working Pennsylvanians Tax Credit (new 2025): 10% of federal EITC ≈ $433
  • PA SUT (estimated): approximately $1,100-$1,300 on taxable consumption at 8%

Combined estimated gross tax burden across wage tax + PA PIT + FICA + SUT (federal income tax net of EITC is a refund): approximately $5,728-$5,928.

Net burden after EITC + WPTC refunds: approximately $5,728-$5,928 − $2,648 federal refund − $433 state refund = approximately $2,647-$2,847.

Net burden as share of $32,000 gross income: approximately 8.3%-8.9%.

But if she does not navigate Schedule SP (95% of eligible filers don't), the wage tax takes an additional $717 that she could have recovered: adjusted net burden approximately $3,364-$3,564, or approximately 10.5%-11.1% of gross income.

Further: the ITEP Pennsylvania 7th Edition finding is that Pennsylvania's lowest 20% pay 15.1% of income in combined state and local taxes. The gap between this illustrative calculation and the ITEP figure reflects differences in household composition and measurement methodology; the ITEP figure for the lowest 20% includes households with different income levels and compositions than this specific profile.

Gap at the person level: Five separate tax systems (plus federal income tax and sales tax embedded in purchases) apply to her income. The systems are administered separately; no single statement shows her total obligation. The federal refund can mask the fact that wage tax, FICA, and sales tax have already taken approximately 16-17% of her gross earnings before the federal refund arrives.

Constituent 2: Retirement exemption comparison

The PA Personal Income Tax retirement income exemption is a single statutory provision. Its distributional effect depends entirely on who has retirement income and how much.

Profile A: Retired cafeteria worker — Hunting Park (North/Northwest Core). Age 69, female. Retirement income: $21,000 ($14,000 Social Security + $7,000 small union pension).

  • PA PIT on equivalent wages: $21,000 × 3.07% = $645 if treated as wages
  • PA PIT actually owed: $0 (retirement income exemption)
  • Annual PA PIT benefit of exemption: $645

Profile B: Retired hospital administrator — Chestnut Hill (Northwest). Age 69, male. Retirement income: $190,000 (defined benefit pension + 401(k) distributions).

  • PA PIT on equivalent wages: $190,000 × 3.07% = $5,833 if treated as wages
  • PA PIT actually owed: $0 (retirement income exemption)
  • Annual PA PIT benefit of exemption: $5,833

Comparison: The same statutory provision saves one person $645 and the other $5,833 — a ratio of approximately 9:1. The distribution of the exemption's benefits corresponds to the distribution of qualifying retirement income, which corresponds to lifetime earnings and wealth accumulation. The exemption is regressive in absolute dollar terms by design.

Constituent 3: Misclassification burden — Kensington (the gig economy driver)

Male, 35. Net income after expenses: approximately $40,000. Classified as an independent contractor by two platforms (rideshare + food delivery).

Formal provision: IRC §§ 1401-1403 apply; self-employment tax at 15.3% on net SE income up to the Social Security wage base; above-the-line deduction for the employer-equivalent half.

Actual experience under 2025 law:

  • Employee at $40,000: FICA employee share = $40,000 × 7.65% = $3,060 (employer pays a matching $3,060)
  • Self-employed contractor at $40,000: SE tax approximately $40,000 × 14.13% (net of above-the-line deduction) ≈ $5,652
  • Annual misclassification FICA burden: approximately $2,592

Cross-reference to the Labor domain: the classification decision made by the platform transfers the employer-side FICA burden — and the absence of employer-provided benefits — to the worker.

Conversational note

When economists and policy analysts talk about "the tax burden," they usually mean federal income taxes. For a lower-income worker in PA-3, the federal income tax — after the standard deduction and EITC — is often close to zero or a net refund. The real burden is the FICA that comes out of every paycheck, the Philadelphia wage tax that comes out of every paycheck, and the PA PIT that comes out every April. Add the sales tax on everything you buy, and a warehouse worker in Haddington making $32,000 is looking at roughly 16-17% of her gross earnings going to taxes before the federal refund arrives — before rent, before food, before anything else.

Pennsylvania's 3.07% personal income tax rate is one of the lowest statewide rates in the country. But the state's combined burden on low-income residents — 15.1% of income in state and local taxes — is the highest in the country, according to the Institute on Taxation and Economic Policy. That is not a contradiction; it is the consequence of Pennsylvania's overall tax structure: flat PIT, high sales tax reliance, flat local wage taxes in Philadelphia, and a regressive assessment pattern in property taxation. The lowest-income Pennsylvanians pay a share of their income in taxes that is 152% higher than the share paid by the top 1%.

The Pennsylvania retirement income exemption is a specific example of how a state tax provision can be described as "helping retirees" while actually distributing its benefits primarily to higher-income retirees. The exemption completely excludes Social Security, pensions, and retirement account distributions from the state income tax. For a retired cafeteria worker on $21,000 from Social Security and a small pension, the exemption saves $645 a year — real money but modest in absolute terms. For a retired hospital administrator on $190,000 from pensions and 401(k) distributions, the exemption saves $5,833 a year — nine times as much in absolute dollars. The policy's distributional effect is determined by its design: a flat rate excluded from a progressive income distribution.

OBBBA made the federal individual tax provisions from the 2017 TCJA permanent in July 2025. This means the $15,750 standard deduction, the $2,200 Child Tax Credit, the 20% § 199A passthrough deduction, and the other individual provisions are now the permanent baseline rather than a sunsetting temporary structure. The SALT cap was raised to $40,000 through 2029 (primarily benefiting higher-income itemizers), reverting to $10,000 in 2030. A new $6,000 senior deduction is in effect through 2028. The aggregate distributional effect of OBBBA is favored for higher-income households (SALT cap, § 199A permanence) with modest adjustments for lower-income households (larger standard deduction, larger Child Tax Credit). For a PA-3 household at $32,000, the changes mostly do not interact materially with their tax situation, because the standard deduction and EITC already zero out their federal income tax; the household's burden remains concentrated in payroll tax, wage tax, state PIT, and sales tax — none of which OBBBA materially changed.

People think "I got a big refund — I don't really pay that much in taxes." The refund is from the federal income tax layer, which is the most progressive and the one where lower-income households have often overpaid through withholding. The wage tax, FICA, PA PIT, and sales tax — which together often exceed the federal income tax for lower-income workers — don't come back.

Geography & representation

Data provenance. Federal statutory provisions directly documented from the Internal Revenue Code post-OBBBA. PA statutory provisions directly documented from the PA Tax Reform Code. Pennsylvania distributional data directly documented from ITEP "Who Pays?" 7th Edition (January 2024), which presents 2024 tax law at 2023 income levels. Philadelphia-specific burden calculations derived from documented rates applied to illustrative income distributions. Working Pennsylvanians Tax Credit parameters from PA Department of Revenue and Governor Shapiro's signing statement (November 12, 2025).

PA-3 statistical profile. PA PIT rate: 3.07% (stable since 2004). PA SUT rate in Philadelphia: 8% (6% state + 2% local). Social Security wage base 2025: $176,100. Federal standard deduction 2025: $15,750 single / $31,500 MFJ.

ITEP Pennsylvania (7th Edition, January 2024):

  • Lowest-income 20%: 15.1% of income in state and local taxes (highest rate on low-income families in the U.S.)
  • Middle 20%: 11.4%
  • Top 1%: 6.0%
  • Pennsylvania ranks 4th most regressive state and local tax system nationally
  • Low-income-to-top-1% ratio: 152% higher rate on low-income families

WPTC average household benefit (UWP estimate): approximately $220. WPTC aggregate state benefit (estimate): approximately $225-$280M annually.

Geographic variation. Tax burden distribution varies across PA-3 sub-areas primarily through income distribution rather than rate differences:

  • Core sub-areas (North/Northwest, West Philadelphia): Concentrated in income ranges where effective burden is highest per ITEP framework; least likely to benefit from retirement income exemption (income primarily wages), investment income exclusion (minimal investments), and SALT cap (minimal itemization).
  • Northwest (Chestnut Hill, Mt. Airy): More diversified income; most likely to benefit from investment income exclusion and retirement income exemption.
  • South/Southwest (gentrifying areas): Mixed; newer residents may benefit from § 199A if self-employed professionals.

Pathway tracing. Annual multi-system tax compliance cycle for a lower-income PA-3 wage earner:

  1. Each paycheck: Philadelphia wage tax + FICA withheld automatically.
  2. Each purchase: 8% sales tax embedded.
  3. April 15: PA PIT return; federal income tax return with EITC claim.
  4. First quarter of the following year: federal refund arrives (including EITC); PA refund arrives (including WPTC beginning 2025).
  5. If self-employed: quarterly NPT + BIRT estimated payments + SE FICA quarterly payments in addition.

Representation question. The federal and state tax architecture formally provides PA-3 households with: a flat Pennsylvania PIT with retirement income exemption; a progressive federal income tax with refundable credits partially correcting regressivity at lower incomes; FICA with a wage base cap; an 8% sales tax with exemptions for necessities; and federal transfer programs of varying statutory stability. What PA-3 constituents actually face is a cumulative burden that falls more heavily as a share of income on lower-income households — documented by ITEP at 15.1% for Pennsylvania's lowest quintile. The gap between formal framework and cumulative distributional outcome is traceable to documented design features at each layer: the flat PA PIT's retirement income exemption benefits higher-income retirees more in absolute dollars; FICA's wage base cap produces effective rate regressivity above the cap; the sales tax's regressivity follows from consumption-to-income ratios; the wage tax's flat rate without accessible poverty exemption applies the full rate to wage-only households. These are structural consequences of documented design features. No single layer is independently confiscatory, but the layers compound without any single progressive element being sufficient to offset the structural regressivity of all others combined.

Gap analysis

Gap 1 — Cumulative regressivity without a corrective layer. No single layer of the PA-3 tax architecture is designed to correct for the regressivity of the others. Progressive federal income tax provides correction only above the standard deduction; for lower-income households after EITC, federal income tax is near zero or negative. PA PIT is flat. Wage tax is flat with largely inaccessible poverty relief. Sales tax is regressive. FICA is regressive above the Social Security wage base. The combined effect falls more heavily on lower-income households as a share of income. This is a structural consequence of documented design features at every layer.

Gap 2 — PA PIT retirement income exemption and distributional consequence. The exemption converts a nominally flat PIT into a de facto regressive instrument by providing greater absolute-dollar benefit to higher-income retirees (the 9:1 ratio in the constituent comparison above). The distributional consequence follows mathematically from the statutory text.

Gap 3 — Federal transfer income vulnerability. PA-3 household income is materially supported by federal transfer programs with varying administrative vulnerability. Social Security and Medicare provide durable statutory floors. VITA, SNAP implementation, housing voucher levels, and CDFI Fund operations are administratively vulnerable. 2025 federal administrative context (documented agency restructuring and staffing changes) represents specific current risk to the administrative infrastructure supporting PA-3 household income.

Gap 4 — TCJA permanence, not expiration. Earlier analyses described an "impending expiration asymmetry"; OBBBA made TCJA individual provisions permanent in July 2025. The asymmetric-distributional-effects framework remains analytically valid as description of what the permanent provisions do: SALT cap (now $40,000 through 2029) primarily benefits higher-income itemizers; § 199A passthrough deduction primarily benefits business owners; standard deduction increase benefits households that take the standard deduction (universal but larger in absolute terms for MFJ). The framework now describes a permanent structure rather than an impending change.

Gap 5 — Cumulative distributional consequence as structural outcome. The documented design of each instrument in the PA-3 tax stack — flat rates at local and state levels; largely inaccessible poverty exemptions; investment-income exclusions benefiting higher-income households; retirement-income exemption providing greater absolute benefit to higher-income retirees; FICA wage base cap regressivity; sales tax regressivity — produces distributional outcomes predictable from those design features, compounding across layers when applied to PA-3's documented income and demographic conditions. The ITEP Pennsylvania 7th Edition documents this compound outcome for the state: 15.1% effective rate on the lowest 20%, the highest in the country. PA-3's income distribution, concentrated in lower quintiles relative to the state, places PA-3 households disproportionately in the income ranges where ITEP's documented combined burden is highest. This is a structural consequence of documented design choices at each level of the stack — traceable to specific statutory provisions at each layer and not requiring any assertion about the intent behind those design choices.