Compare taxes and see how much you save moving from New York to Ireland
New York state income tax is $5,600 at $100,000 income, while Ireland's combined income tax, Universal Social Charge (USC), and PRSI (Pay Related Social Insurance) totals approximately $39,000 at the same USD equivalent income. Adding US federal (~$17,400), a New York resident's combined burden is approximately $23,000 — well below Ireland's $39,000. Despite this significant tax difference, Ireland's 'Silicon Docks' tech sector in Dublin, EU market access, English language, and strong Irish-American cultural ties continue to attract significant numbers of American professionals. The US-Ireland tax treaty prevents double taxation for Americans establishing Irish residency.
High State Income Tax
9 progressive brackets from 4% to 10.9%; NYC residents pay an additional city income tax up to 3.876% on top of state rates.
Income Tax + USC + PRSI
20-40% income tax plus Universal Social Charge (USC) 0.5-8% plus Pay Related Social Insurance (PRSI) 4%.
At $100,000 income:
Ireland's combined income tax, USC, and PRSI totals approximately $39,000 at $100,000 USD — significantly higher than New York state tax alone ($5,600). Adding NY federal, total NY burden is ~$23,000 — still well below Ireland. Ireland's strong tech sector (Dublin's Silicon Docks), EU market access, and English language attract many Americans, but the tax cost is substantial.
| Income | NY Tax | IE Tax | Savings | 10-Year |
|---|---|---|---|---|
| $50,000 | $2,050 | $13,500 | -$11,450 Ireland costs more | -$114,500 |
| $75,000 | $3,983 | $25,000 | -$21,017 Ireland costs more | -$210,170 |
| $100,000 | $5,600 | $39,000 | -$33,400 Ireland costs more | -$334,000 |
| $150,000 | $10,177 | $62,000 | -$51,823 Ireland costs more | -$518,230 |
| $250,000 | $19,874 | $102,000 | -$82,126 Ireland costs more | -$821,260 |
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Transfer Money Internationally →The Universal Social Charge (USC) is a separate Irish tax on gross income, charged alongside income tax. USC rates for 2025 are: 0.5% on income up to €12,012; 2% on income from €12,013 to €25,760; 4% on income from €25,761 to €70,044; and 8% on income above €70,044. At $100,000 USD equivalent income, USC adds approximately $5,000-$6,000 to the income tax bill. Additionally, PRSI (Pay Related Social Insurance) at 4% of gross income adds further — approximately $4,000 at $100,000. Combined, USC and PRSI can add $9,000-$10,000 on top of the base income tax, contributing to Ireland's high total effective rate of approximately 39% at $100,000 USD equivalent.
Yes — American citizens must file US federal income tax returns on their worldwide income regardless of Irish residency. The US-Ireland tax treaty and foreign tax credit system prevent double taxation: Irish income tax, USC, and PRSI paid can generally be credited against the US federal tax liability on the same income. Because Ireland's combined rates ($39,000 at $100K) significantly exceed US federal rates (~$17,400 at $100K), the foreign tax credit typically eliminates the entire US federal tax bill on Irish-source income. However, the annual filing obligation remains, and Americans with Irish bank accounts, pension assets (ARFs, PRSAs, occupational pension schemes), and investment accounts must comply with FBAR (FinCEN 114) and FATCA Form 8938 reporting.
Ireland has deliberately positioned itself as the preferred European base for US technology companies through a combination of factors. Ireland's 12.5% corporate tax rate on trading income is among the EU's lowest, making it attractive for structuring European IP and profit centers. English is the official language — eliminating the language barrier for US companies expanding to Europe. The Irish legal system is based on English common law, familiar to US businesses. A highly educated, English-speaking workforce with a young demographic profile provides talent access. EU membership provides access to the single market. The cultural affinity between Ireland and the US (strengthened by the Irish-American diaspora) creates natural business ties. Major tech employers include Google, Meta, Apple, Amazon Web Services, LinkedIn, Salesforce, Twitter, and Airbnb.
The United States-Ireland Convention for the Avoidance of Double Taxation (signed 1997, in force 1998) is a comprehensive bilateral treaty. Key provisions include: employment income is taxed where work is performed; dividends are subject to reduced withholding rates (typically 5-15%); interest has a zero withholding rate between the two countries; royalties have a zero withholding rate; and pension income has specific treatment provisions. For Americans living in Ireland, the treaty ensures foreign tax credits can be used to offset US tax on Ireland-source income. The US saving clause allows the US to tax its citizens regardless of the treaty, but specific treaty provisions override this for certain income types. A US-Ireland totalization agreement coordinates social security obligations.
Ireland's 40% tax band is notable for activating at a relatively low income threshold. Single earners pay 20% on income up to approximately €42,000 (around $46,000 USD), and 40% on all income above that — before adding USC (up to 8%) and PRSI (4%). At $100,000 USD equivalent, a large portion of income is taxed at 40%+, producing the approximately $39,000 total burden. In contrast, New York's highest state rate of 10.9% applies to income above $25 million for single filers; the rate applying at $100,000 is closer to 6.09%. The US federal rate at $100,000 for single filers is 22-24% on the portions in those brackets. Ireland's marginal tax experience at even modest incomes is far heavier than New York's for high earners.
Yes — Americans who establish genuine Irish tax residency and meet the IRS Bona Fide Residence test or Physical Presence test (330 days outside the US in a qualifying 12-month period) can claim the Foreign Earned Income Exclusion (FEIE) under IRS Form 2555. The 2025 FEIE exclusion is $126,500. However, most Americans in Ireland find the Foreign Tax Credit (Form 1116) far more advantageous than FEIE. Because Irish rates ($39,000 at $100K) massively exceed US federal rates ($17,400 at $100K), the foreign tax credit typically provides dollar-for-dollar credits that fully eliminate the US federal tax liability — and may generate excess foreign tax credits that carry forward. Using FEIE instead of the foreign tax credit in Ireland would likely result in paying more total tax.
The New York to Dublin move is among the most historically significant and culturally familiar expat transitions for Americans. Ireland and New York have the deepest cultural ties of any US-international city pair — an estimated 33-36 million Americans claim Irish ancestry, with New York's Irish-American community among the world's largest outside Ireland. Modern Dublin has transformed into a genuinely cosmopolitan city with a vibrant restaurant scene, strong arts culture, and excellent universities. The 'craic' culture of pubs and music is globally beloved. Practical considerations include Ireland's driving on the left side of the road, the requirement to switch to metric measurements, and the notoriously challenging Dublin housing market — with rental costs rivaling Manhattan for a one-bedroom in central areas. The weather — mild but rainy year-round — is an adjustment for New Yorkers used to distinct seasons.