🇺🇸 COUNTRY A USA VS 🇮🇪 COUNTRY B Ireland

Yes, US citizens must file US taxes regardless of where they live. However, the Foreign Earned Income Exclusion (FEIE) excludes the first $130,000 (2026) of foreign-earned income. Income above that may be subject to both systems, but the US-Ireland tax treaty and foreign tax credits prevent double taxation. You pay Irish taxes on income earned in Ireland, then claim credits on your US return.

The Universal Social Charge (USC) is a graduated tax on gross income ranging from 0.5% to 8%. It applies after Personal Public Service Card Number (PPSN) registration. Rates for 2026: 0.5% on first €12,012, 2% on €12,013-€22,920, 4.5% on €22,921-€70,044, and 8% above €70,044. Medical card holders and those earning under €13,000 are exempt. USC is separate from income tax and PRSI.

The FEIE allows US citizens living abroad to exclude $130,000 (2026) of foreign-earned income from US taxes. You must meet either the Physical Presence Test (330 days outside US in 12 months) or Bona Fide Residence Test (full-year Irish tax resident). Income above $130,000 is taxable in the US, but you can claim foreign tax credits for Irish taxes paid. Since Irish rates often exceed US rates, high earners typically owe no additional US tax.

Ireland offers public healthcare to residents funded through taxes and PRSI contributions. While not entirely free (GP visits €50-70, some prescription co-pays), total annual costs are minimal compared to US private insurance averaging $500-1,500/month ($6,000-18,000/year) plus deductibles. Even with higher Irish tax rates, healthcare savings alone can offset $6,000-18,000 annually. Emergency care and hospital treatment are free in Ireland's public system.

Ireland has a complex 3-tier system: residence (183+ days in Ireland), ordinary residence (resident 3+ consecutive years), and domicile (permanent home intent). Non-domiciled residents can use the remittance basis—only Irish-source income and foreign income brought into Ireland is taxed. This benefits high earners with global income. US citizens still must report worldwide income to the IRS. Domicile rules are complex; consult a cross-border tax advisor.

Ireland's 12.5% corporate tax rate (vs US 21%) attracts tech giants like Google, Meta, Apple, Microsoft, and Amazon to establish European headquarters in Dublin. This creates thousands of high-paying tech jobs for Americans. Combined with EU market access, English-speaking workforce, and favorable tax treaties, Dublin has become Europe's tech hub. Note: Employee income tax (20-40%) differs from corporate tax rate.

Dublin is approximately 25% cheaper than San Francisco overall, though expensive by European standards. Rent: 1-bed apartment €1,800 ($1,950) Dublin vs $3,200 SF. Groceries: 20% cheaper. Public transit: €135/month ($146) Dublin vs $100+ SF. However, Dublin is more expensive than smaller Irish cities like Cork or Galway. Tech salaries are lower ($80-100K Dublin vs $150K+ SF), but healthcare savings and better work-life balance offset this for many.

Yes, US citizens must file a US tax return annually regardless of where they live, reporting worldwide income. Even if you owe no US tax due to FEIE ($130,000 exclusion) or foreign tax credits, you must file Form 1040, Form 2555 (FEIE), and potentially FBAR (foreign bank accounts over $10,000) and FATCA Form 8938 (foreign assets). Filing deadline is June 15 for US citizens abroad. Many expats use specialized services like Greenback for compliance.

Foreign Tax Credit (Form 1116) allows you to offset US tax liability dollar-for-dollar with foreign taxes paid to Ireland. If you earn $150,000 in Ireland and pay $61,800 Irish tax (income tax + USC + PRSI), you can claim that against your US tax liability. Since Irish rates (up to 52% effective) are often higher than US rates (up to 50.3% with state tax), high earners typically owe no additional US tax after credits, but must still file.

Pay Related Social Insurance (PRSI) is Ireland's social insurance system. Employees pay 4.1% on all income (no cap, rate increased from 4% in October 2024), employers pay 8.8-11.05%. PRSI funds state pensions, unemployment benefits, maternity/paternity leave, and contributes to healthcare. Unlike US Social Security (capped at $176,100 in 2025), PRSI applies to all earnings. As a US expat, you pay Irish PRSI on Irish employment, which may qualify you for Irish social benefits, but doesn't reduce US Social Security obligations.

Yes, but tax implications are complex. If you're an Irish tax resident (183+ days), you owe Irish tax on worldwide income, including US employer salary. Your employer may need to register for Irish payroll. You can claim FEIE on your US return. If the US company has no Irish presence, you may need to operate as a contractor. Ireland's remote work visa (since 2022) allows non-EU citizens to live in Ireland while working for non-Irish companies, subject to income requirements.