Home/Compare/Japan vs Portugal · $100,000#CMP-26317
ParametersFromJapanToPortugalGross$100,000FilingSinglePeriodFY 2026
Residency model
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§ 01 · The verdict

Japan leaves you with $25,089 more per year — a 41.9% net advantage over Portugal on a $100,000 gross.

Most of the gap is opened by Japan's Non-Permanent Resident regime, which displaces the standard schedule. Both countries are indicated in USD at the displayed FX.

Net delta · annual
+$25,089
in favour of Japan
Monthly
+$2,091
Over 5 yrs
+$125,445
Rate gap
25.1 pp
Confidence
High
JP·TokyoJPY → USD @ 0.0066

Japan

Non-Permanent Resident
Effective tax rate
15.0%
on $100,000 gross
Net take-home
$85,000
$7,083 / month
Statutory deductionsUSD
Personal income tax
npr · 0% flat
Social security
15.0% employee · uncapped
$15,000
Total deductions$15,000
Gross income$100,000
Net take-home$85,000
PT·LisbonEUR → USD @ 1.0870

Portugal

Standard tax (no special regime)
Effective tax rate
40.1%
on $100,000 gross
Net take-home
$59,911
$4,993 / month
Statutory deductionsUSD
Personal income tax
progressive · top 48%
$29,089
Social security
11.0% employee · uncapped
$11,000
Total deductions$40,089
Gross income$100,000
Net take-home$59,911
§ 02 · Where the paycheck goes

Flow of $100,000.

Width of each segment is its share of gross. NET segment is what crosses the finish line into the user's account.
Japan15.0% effective
$0 → $100,000
Social · $15,000
NET · $85,000
Portugal40.1% effective
$0 → $100,000
PIT · $29,089
Social · $11,000
NET · $59,911
Income tax (PIT)Social chargeNet take-home
Δ net+$25,089·41.9% advantage JA
§ 03 · Full ledger

Line-item reconciliation.

All amounts USD · FY2026
InstrumentJapan · USDPortugal · USDΔ (PT − JP)
I. Personal income tax
Personal income tax
JPnpr · 0% flatPTprogressive · top 48%
$29,089+$29,089
subtotal · personal income tax$0$29,089+$29,089
II. Mandatory social security & health
~15% total (health + pension + employment).
JP15.0% · uncappedPT
$15,000−$15,000
11% of gross, no cap.
JPPT11.0% · uncapped
$11,000+$11,000
subtotal · mandatory social security & health$15,000$11,000−$4,000
Total deductions$15,000$40,089+$25,089
Effective rate15.0%40.1%25.1 pp
Gross income$100,000$100,000
Net take-home$85,000$59,911−$25,089
Table 1 · Statutory deductions, single-filer remote worker, FY2026 indicative. All amounts in USD. n/a where instrument does not apply.
§ 04 · Cost-of-living adjusted · secondary

And once the paycheck has to buy something.

We treat this section as secondary — the tax model is precise; the price model is a survey instrument with wider error bars.
PPP basis · NYC = 100JapanPortugalΔ
Cost-of-living index
Indicative · placeholder until COL table ships
70.056.0-14.0 pts
Nominal net (annual)
From the engine — exact
$85,000$59,911−$25,089
Real net · Portugal basket$68,000$59,911−$8,089
Real purchasing power · annual
Net take-home, re-expressed in Portugal-basket dollars.
Japan
$68,000
nominal $85,000
Portugal
$59,911
nominal $59,911
Real delta · annual
+$8,089
a 13.5% advantage to Japan once basket prices are normalised.
Indicative only — wider error bars than the tax model.
§ 05 · Methodology & sources

How this comparison was built.

Every line above can be traced to a primary instrument. We publish the model; you may toggle its parameters.

Read the full note ↗
Japan · source instruments
  • Personal income tax code · brackets 2026
  • Social-insurance contribution schedule 2026
  • Non-Permanent Resident · Foreigner with no domicile in Japan + present <5 years in l…
Portugal · source instruments
  • Personal income tax code · brackets 2026
  • Social-insurance contribution schedule 2026
  • IFICI (NHR 2.0) · Not Portuguese tax resident in prior 5 years + Bachelor's +…
Model assumptions
  • 01.Single filer, no dependents. Joint and head-of-household calculations not yet modeled.
  • 02.Income treated as employment, not self-employed unless explicitly set.
  • 03.Special regimes assumed eligible where the headline criteria fit; otherwise the standard schedule applies.
  • 04.FX held constant at the displayed static rate across the period.
  • 05.No equity, RSU, capital gains, or carried interest.
  • 06.No treaty offsets applied — see HOME model for the US-resident case.
  • 07.Filing status assumed Single. Joint and head-of-household calculations not yet modeled.
  • 08.Tax year 2026 with 2025 transitional rates where applicable.
Last refreshed · Thu, 21 May 2026 14:03:20 GMT
Engine v0.1.0
Confidence · High (JP), High (PT)
Disclaimer — Comparely publishes modelled estimates for informational purposes and does not constitute legal, tax, accounting, or immigration advice. Statutory rates, social-charge ceilings, FX, and elective regimes change. Eligibility for any special regime is subject to qualifying conditions beyond income alone. Consult a qualified adviser before acting on any figure displayed.