Boston vs Philadelphia: Salary & Cost of Living Comparison (2026)
Boston and Philadelphia are two old Northeast cities with deep university and healthcare clusters but very different cost structures. Boston charges Massachusetts's 5% flat plus a 4% Millionaires Tax surtax above $1.083M (2026 indexed); Philadelphia layers a 3.75% city wage tax on top of Pennsylvania's 3.07% flat state income tax — combined 6.82% on resident wages. Boston cost of living index 145 vs Philly 99 — a 46-point gap. Both cities have strong biotech and pharma (Boston's Kendall Square is non-replicable; Philly anchors GSK, Spark Therapeutics, plus the University City research triangle). The post-tax math favors Philly modestly for moderate incomes; for high-income or high-equity professionals approaching the MA Millionaires Tax threshold, Philly's structural cost advantage compounds dramatically.
Last reviewed: May 8, 2026 · Reviewed by ProSalaryTax tax research team
TL;DR — 30-second version
- 1.Income tax: Boston 5% flat (MA, +4% Millionaires Tax above $1.083M = 9% top) vs Philly combined 6.82% (PA 3.07% flat + Philly 3.75% city wage tax for residents). On $100K wages, Boston state tax ~$5,000/yr; Philly ~$6,820/yr — Philly higher at moderate incomes. On $1.5M, Boston ~$92,500/yr (with surtax); Philly ~$102,300/yr — Philly still slightly higher but the surtax narrows the gap dramatically.
- 2.Cost of living index: Boston 145 vs Philly 99 — a 46-point gap. Median home: Boston $720K vs Philly $295K — a $425K gap (largest in our Northeast comparison). Median 1BR rent: Boston $2,800/mo vs Philly $1,750/mo, a $12,600/yr difference.
- 3.Property tax: Boston (Suffolk County) 1.07% effective vs Philly (Philadelphia County) 0.95% effective. Roughly tied per dollar; absolute bills at median home values dramatically favor Philly because of cheaper homes (Philly $2,800/yr median vs Boston $7,700/yr median).
- 4.Estate tax: MA 0.8-16% above $2M (low threshold, not indexed); PA inheritance tax 4.5-15% on heirs (4.5% lineal descendants, 12% siblings, 15% others) — applied differently from estate tax. PA inheritance tax can be larger for estates with non-spouse beneficiaries; smaller for estates entirely to spouse (0% spousal rate).
- 5.Industry trade: Boston wins on Kendall Square biotech (Moderna, Vertex, Biogen), top-tier universities (Harvard, MIT), medical (Mass General Brigham), Fidelity/State Street finance. Philly wins on Comcast HQ, GSK US HQ, Spark Therapeutics, Wistar Institute, Children's Hospital of Philadelphia + Penn Medicine cluster (the second-tier US biotech and gene-therapy cluster), Vanguard HQ in suburbs, Independence Blue Cross.
Take-Home + Real Purchasing Power: Boston vs Philadelphia
| Salary | Boston net | Philadelphia net | Real Δ (COL adj) |
|---|---|---|---|
| $50,000 | $40,075 | $40,820 | +$13,594 Philadelphia |
| $75,000 | $58,063 | $59,290 | +$19,846 Philadelphia |
| $100,000 | $74,400 | $76,110 | +$25,568 Philadelphia |
| $150,000 | $106,511 | $109,186 | +$36,833 Philadelphia |
| $200,000 | $139,147 | $142,787 | +$48,266 Philadelphia |
Net pay: single filer, standard deduction, no 401(k)/HSA. "Real Δ" adjusts take-home by cost-of-living index (Boston 145, Philadelphia 99; national baseline = 100). 2026 tax year.
Tax-by-Tax Breakdown
Income Tax
Winner: Boston (at moderate incomes); Philly (at very high incomes due to MA surtax)
On $100K wages, Boston state tax runs ~$5,000/yr; Philly $6,820/yr — Philly higher by ~$1,820/yr. On $250K, Boston ~$12,500/yr; Philly ~$17,050/yr — Philly higher by $4,550/yr. On $1M (just below MA surtax threshold), Boston ~$50,000/yr; Philly ~$68,200/yr — Philly higher by $18,200/yr. On $2M (with $1M+ subject to MA's 9% surtax), Boston ~$140,000/yr; Philly ~$136,400/yr — Philly slightly cheaper. The MA Millionaires Tax narrows the income-tax gap dramatically at very high incomes; Boston-anchored founders contemplating $5M+ liquidity events face MA tax of $400K+ vs Philly $341K — Philly wins by $59K on the event.
Property Tax
Winner: Roughly tied per dollar
On a $500K home: Boston ~$5,350/yr; Philly ~$4,750/yr. Per dollar Philly wins modestly. Absolute bills at median home values dramatically favor Philly: $2,800/yr Philly median vs $7,700/yr Boston median — driven by Philly's much cheaper home prices ($295K median vs $720K). Property tax is one of the largest cost differentials between the two cities.
Sales Tax
Winner: Boston
On $50K of taxable household spending, Boston sales tax runs $3,125/yr versus Philly $4,000 — a $875/yr Boston advantage. Pennsylvania exempts most groceries and clothing entirely (one of the most-exempt sales-tax structures in the country); Massachusetts also exempts groceries and clothing under $175. Both states' actual taxable consumer-spending bases are smaller than the headline rates suggest.
Estate Tax
Winner: Mostly Philly (depends on estate distribution)
MA estate tax on $5M estate ~$390,000. PA inheritance tax on $5M estate distributed to children ~$225,000 (4.5% lineal descendant rate); to spouse $0; to siblings ~$600,000. PA's structure favors estates passing to spouse and direct lineal descendants; penalizes estates passing to siblings or non-related heirs. For most family-style estate plans (spouse-then-children), Philly significantly cheaper than Boston. For non-traditional estate plans the comparison reverses.
Where the 46-Point COL Gap Hits — Mostly Housing
The 46-point cost-of-living gap (Boston 145 vs Philly 99) lives primarily in housing. Median home prices: Boston $720K vs Philly $295K — a $425K gap, the largest among our Northeast comparisons. Median 1BR rent: Boston $2,800/mo vs Philly $1,750/mo, a $12,600/yr renters' gap. Philly's housing remains affordable in a way most Northeast cities have lost — the city's chronic underdevelopment relative to potential demand keeps prices below DC, Boston, NYC, and even Baltimore-suburb pricing in many neighborhoods.
Restaurants and consumer goods run 25-30% cheaper in Philly across most categories. Philadelphia's restaurant scene has improved markedly post-2010 (multiple James Beard winners, top-tier dining in Fishtown, Northern Liberties, East Passyunk) at materially lower prices than Boston equivalents. Auto insurance: Boston $1,950/yr versus Philly $2,400/yr — Philly slightly higher due to Philadelphia's higher uninsured-motorist rate.
Climate: both cities have four-season Mid-Atlantic-to-Northeast climate. Boston winters are colder and snowier (45+ inches average snowfall vs Philly's 23 inches); Philly summers run slightly hotter and more humid (closer to DC's climate than Boston's). Both have reasonable spring/fall.
Net all-in including taxes for a $200K single professional: Philly runs $15,000-$22,000/yr cheaper than Boston in real purchasing power. The gap widens dramatically for high-comp professionals at $1M+ where the MA Millionaires Tax compounds with cost-of-living and housing differentials. Even with Philly's higher headline tax rate at moderate incomes, the housing arbitrage is decisive.
Cost of Living Index
Boston 145 · Philly 99. Philly is 1% below national; Boston is 45% above. The pricier city is roughly 46% more expensive across the housing-and-consumer basket.
Median Home Price (Q1 2026)
Boston $720K · Philly $295K. The $425K gap is the largest among our Northeast comparisons. Philly remains genuinely affordable for a major Northeast metro; Boston's chronic supply constraints keep prices elevated despite limited population growth.
Median 1BR Rent
Boston $2,800/mo · Philly $1,750/mo. The $1,050/month differential ($12,600/yr) is meaningful for renters at all income levels.
Property Tax (Effective Rate)
Boston 1.07% · Philly 0.95%. Per dollar Philly wins modestly. Absolute bills at median home values: Philly $2,800/yr vs Boston $7,700/yr — Philly dramatically lower because of cheaper homes.
Sales Tax
Boston 6.25% · Philly 8.0%. On $50K spending Boston saves $875/yr. Both states have generous grocery and clothing exemptions that reduce the effective taxable base.
Climate + Lifestyle
Boston: cold winters with significant snow (45+ inches avg), hot-humid summers, walkable urbanism, deep university culture, coast access. Philly: milder winters (23 inches snow avg), hot-humid summers, walkable urbanism, deep history (US founding city), cheesesteak/Italian-American food culture, NYC accessibility (90 min Amtrak).
Who Wins for Whom
Single renter, $75K, working remote
Best fit: Philly
State+city tax: Boston ~$3,750/yr; Philly ~$5,115/yr — Philly higher by $1,365/yr. Rent: Boston ($2,800) vs Philly ($1,750) saves $12,600/yr. Sales tax Boston saves ~$875/yr. Net Philly advantage: roughly $10,000/yr in real purchasing power, driven entirely by housing. Boston's higher walkability/transit doesn't offset Philly's housing economics at this income tier.
Family household, $135K, considering relocation
Best fit: Philly
Tax: Boston ~$6,750/yr vs Philly ~$9,200/yr — Philly higher by $2,450/yr. Housing: Philly ~$13,000/yr cheaper rent or $425K cheaper home. Property tax: Philly ~$5,000/yr cheaper for buyers on equivalent-spend home. Sales tax Boston saves ~$875/yr. Net Philly advantage at this income tier: $11,000-$15,000/yr. Suburban schools comparable — Boston's Wellesley/Newton/Lexington and Philly's Lower Merion/Radnor/Tredyffrin both have top-tier public districts; Philly's at materially cheaper housing.
Mid-career biotech researcher, $145K
Best fit: Boston
Boston's Kendall Square biotech cluster (Moderna, Vertex, Biogen, Sanofi, Bluebird Bio, Beam Therapeutics, plus 300+ smaller firms) is non-replicable. Philly's biotech cluster (Spark Therapeutics, GSK US, Wistar Institute, plus Penn Medicine/CHOP gene-therapy concentration) is meaningful — Philadelphia is arguably the country's #2 gene-therapy cluster — but smaller than Boston. For biotech researchers and drug-development professionals at firms with no Philly presence, Boston wins on career math. For gene-therapy and CHOP-orbit specialties, Philly is increasingly competitive.
Mid-career professional, $190K
Best fit: Philly
Tax: Boston ~$9,500/yr vs Philly ~$13,000/yr — Philly higher by $3,500/yr. Housing: Philly $13,000+/yr cheaper. Property tax: Philly $5,000+/yr cheaper for buyers. Net Philly advantage: $14,000-$20,000/yr. Both cities have professional-services depth (Boston: Fidelity, State Street, biotech-services; Philly: Vanguard, Independence Blue Cross, Comcast, Big Law). Philly remains under-discovered as a professional-services hub at materially lower cost than Boston/NYC/DC.
Senior tech engineer, $400K total comp
Best fit: Philly
Tax: Boston ~$20,000/yr vs Philly ~$27,300/yr — Philly higher by $7,300/yr. Housing: Philly $15,000+/yr cheaper. Net Philly advantage at this comp tier: $8,000-$15,000/yr. Decisive question is career: if you're at a Boston-anchored biotech-tech, university-research-tech firm with no Philly presence, the move requires changing employers. For portable tech roles, Philly's economics still favor — though the gap is smaller than coastal-vs-Sun-Belt comparisons.
Tech founder approaching liquidity event
Best fit: Philly
MA Millionaires Tax (4% above $1.083M) applies to all income including capital gains and business-sale proceeds. On a $5M founder liquidity event, MA owes the surtax = $200K+ in additional tax beyond the 5% flat rate. PA's combined 6.82% rate runs $341K on $5M event but no surtax. Plus MA's $2M estate-tax threshold creates additional exposure PA inheritance tax structure handles differently (often more favorably for spouse/lineal descendant beneficiaries). Net Philly favorable for high-equity founders — though both states' rates are meaningful enough that founders contemplating major exits should also consider Texas or Florida residency.
Retiree couple, $90K combined retirement income
Best fit: Philly
Pennsylvania exempts ALL retirement income (Social Security, pension, IRA distributions, 401(k) distributions) from state income tax. Plus Philly city wage tax exempts retirement income (only wages count). So a Philly retiree on $90K retirement income owes $0 PA state tax and $0 Philly wage tax. Massachusetts taxes pension/IRA distributions at 5% (Social Security exempt); on $90K retirement with $30K Social Security, MA owes ~$2,000/yr. Plus MA's $2M estate-tax exposure. Net Philly advantage: $5,000-$10,000/yr in retirement spending power, plus material estate-tax differential for high-net-worth households. Penn Medicine is among the country's top hospital systems for retiree healthcare.
Should You Actually Move?
Boston-to-Philadelphia migration is small but consistent — driven mostly by retirees seeking PA's full retirement-income exemption, biotech-adjacent professionals attracted to Philly's gene-therapy cluster, and households priced out of Boston's housing market. Pennsylvania has been net inbound modestly for the last decade, with Philadelphia specifically gaining more than the state average. Massachusetts is roughly net flat with periodic outflows during high-tax years.
Establishing Pennsylvania residency from Massachusetts follows standard documentation: 183+ days, PA driver's license, voter registration, primary care, sale or long-term rental of MA home. The Massachusetts Department of Revenue does run departing-resident audits for high earners, particularly around equity events — move at least 12-18 months before any major liquidity event for clean residency separation, especially with the surtax in play.
Philly downside risks: chronic crime in specific neighborhoods (the city's violent-crime rate is higher than Boston's; concentrated in particular zip codes most professionals would avoid); aging infrastructure (SEPTA transit reliability issues); the persistent narrative of urban decline that overstates the actual condition (Center City and intown neighborhoods like Fishtown, East Passyunk, Northern Liberties have thrived); higher Philly city wage tax on residents (3.75%) than non-resident commuters pay. Boston downside risks: Millionaires Tax + low-threshold estate tax create double friction; harsh winters; chronic affordability crunch; aging T transit infrastructure. For most professional households except biotech/Kendall-Square-anchored careers, Philly's structural cost advantage compounds favorably over time.
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Calculate bonusBoston vs Philadelphia: The Honest Verdict
Philadelphia wins for most households making decisions on cost-of-living arbitrage, particularly retirees (PA's full retirement-income exemption is exceptional) and households with portable employment. The housing differential is the dominant factor — $425K cheaper median home, $12,600/yr cheaper rent — that swamps the higher Philly city wage tax at every income level. The MA Millionaires Tax also makes Philly increasingly favorable at very high incomes despite Philly's higher headline rate at moderate incomes. Boston retains decisive career advantages in biotech (Kendall Square is non-replicable), university research, and Fidelity/State-Street-anchored finance. For these tracks the post-tax penalty plus housing premium is the cost of admission to industries that don't exist at scale elsewhere.
Single highest-leverage move: don't underestimate Pennsylvania's retirement-income exemption if you're approaching retirement. PA fully exempts pensions, IRA distributions, 401(k) distributions, AND Social Security from state income tax — one of the most retiree-friendly structures in the country. Combined with Philly's inheritance-tax structure favoring spousal and lineal-descendant transfers (versus MA's estate-tax cliff) and dramatically lower housing costs, Philly is one of the better-undervalued retirement destinations in the Northeast for households comfortable with urban living. For active-career professionals, the math is tighter due to higher Philly city wage tax, but the housing arbitrage usually wins.
Deep Dive Into Each City
Boston Cost of Living →
Standalone Boston guide: COL index 145, median rent and home prices, daily expenses, salary requirements, and a Boston neighborhood-by-neighborhood breakdown.
Philadelphia Cost of Living →
Standalone Philadelphia guide: COL index 99, median rent and home prices, daily expenses, salary requirements, and a Philadelphia neighborhood-by-neighborhood breakdown.
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