Ireland vs United Kingdom: Tax Comparison

Compare income tax rates and take-home pay between Ireland and United Kingdom

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On a $100,000 salary, you'd take home $72,211 in United Kingdom (London) versus $68,457 in Ireland — a difference of $3,754/year ($313/month).

Tax Breakdown Comparison

United Kingdom

2025-26 tax year

Lower Tax

Take-Home Pay

$72,211

$6,018/mo

Effective Rate

27.8%

of gross

Gross$100,000
Income Tax -$23,083
Social Contributions -$4,706
Total -$27,789

Ireland

2025 tax year

Take-Home Pay

$68,457

$5,705/mo

Effective Rate

31.5%

of gross

Gross$100,000
Income Tax -$24,969
Social Contributions -$6,573
Total -$31,543

Effective Tax Rate by Income

Shows effective tax rate (total tax / gross income) at different income levels in USD

Life & Taxes

What it's like to live and earn in each country

A Tale of Two Isles

From tech wizards flocking to Dublin's 'Silicon Docks' to professionals seeking London’s global pulse, the movement between these neighbors is constant. While Ireland offers a cozy, community-driven charm, the UK provides the high-octane energy of a global powerhouse, making it a tough choice for any ambitious expat.

Vibes and Verses

Life in the UK is a fast-paced blend of historic pubs and modern skyscrapers, where everything you need is just a tube ride away. Meanwhile, Ireland trades the frantic pace for a more relaxed 'craic,' focusing on a better work-life balance and a landscape that feels like a green embrace.

The Taxman’s Strategy

Ireland keeps it simple with a two-tier system and generous tax credits that act like a safety net for your wallet. In contrast, the UK uses a three-tier ladder where high earners face a steeper climb, and those at the very top might see their personal allowances begin to vanish into thin air.

The Safety Net

Your contributions buy more than just infrastructure; they are your ticket to peace of mind. While both nations offer robust healthcare and support, Ireland adds the unique Universal Social Charge into the mix, ensuring that everyone contributes a little something toward the collective well-being of the Emerald Isle.

The Bottom Line

Choosing between them often comes down to where you are in your career journey. The UK’s structure favors those climbing the middle of the ladder, while Ireland’s streamlined system and unique credits offer a warmer welcome for those looking for simplicity and a friendly community to call home.

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Ireland vs United Kingdom: Tax System Details

United Kingdom

Tax Year
2025-26
Currency
GBP
Region Used
London
Key Assumptions
  • -2025/26 tax year rates for England, Wales, and Northern Ireland used for national income tax.
  • -London selected as representative region; however, no regional income tax applies (rest of UK rates).
  • -Personal allowance tapers by £1 for every £2 of income exceeding £100,000.
  • -National Insurance Class 1 (Employee) rates applied for standard employees.
  • -Council tax is excluded as it is property-based rather than income-based.
  • -Self-employed contributions (Class 2 and Class 4 NICs) are excluded per the worker profile.

Ireland

Tax Year
2025
Currency
EUR
Key Assumptions
  • -Worker is a single employee under 70 years old with no children.
  • -Combined Personal Tax Credit (€2,000) and Employee PAYE Tax Credit (€2,000) into a single relief.
  • -Universal Social Charge (USC) is modeled as a social contribution with progressive brackets.
  • -USC has an entry threshold of €13,000; if total income is below this, the liability is zero.
  • -PRSI rate used is 4.1% (Class A1), which applies from 1 January to 30 September 2025; it increases to 4.2% on 1 October 2025.
  • -PRSI has a weekly entry threshold of €352 (approx. €18,304 per annum).

Calculation Methodology

What's Included

  • Federal/national income tax
  • State, provincial, or local taxes
  • Social security contributions
  • Healthcare levies (where mandatory)
  • Additional surcharges

Assumptions

  • Single filer, no dependents
  • Employment income only
  • Standard deductions applied
  • Age 35 (where relevant)
  • No special tax credits