Ireland vs United States: tax comparison for expats
A sourced head-to-head on Ireland and United States: tax-residency rules, income tax rates, special regimes, side by side. Income tax only, not tax advice.
Effective income tax by income
An effective-rate comparison for this pair isn’t available yet (one country’s full bracket table is still being verified). The sourced fact comparison below still applies — and the interactive tool covers every modelled country.
Ireland vs United States, side by side
| Ireland | United States | |
|---|---|---|
| Top income tax rate | 52.2%ⓘIrish Revenue Commissioners“Any income above your standard rate band is taxed at the higher rate of Income Tax, which is currently 40%.”View source · accessed 2026-09-19 | 37%ⓘPwC Worldwide Tax Summaries“For individuals, the top federal income tax rate for 2025 is 37%, except for long-term capital gains and qualified dividends”View source · accessed 2026-08-20 |
| Tax-residency day threshold | 183 daysⓘIrish Revenue Commissioners“280 days or more in total, taking the current tax year plus the preceding tax year together. You will not be resident in Ireland if you are here for 30 days or less in a tax year.”View source · accessed 2026-09-19 | 183 daysⓘInternal Revenue Service (IRS)“You will be considered a United States resident for tax purposes if you meet the substantial presence test for the calendar year. To meet this test, you must be physically present in the United States (U.S.) on at least:”View source · accessed 2026-08-20 |
| Signature tax regime | [source]PwC Worldwide Tax Summaries“The reduction is capped at EUR 50,000 in any year from 1 January 2026 onwards (maximum cap of EUR 35,000 for prior years).”View source · accessed 2026-09-19 | Foreign Earned Income Exclusion: USD 132,900 / yearⓘInternal Revenue Service (IRS)“For tax year 2026, the foreign earned income exclusion is $132,900 up from $130,000 for tax year 2025.”View source · accessed 2026-08-20 |
| Digital nomad visa | No | No |
| Nomad-visa income requirement | — | — |
Every figure links to its source and verification date. Full guides: Ireland · United States.
Frequently asked questions
Is Ireland or United States better for tax?
It depends on your income, residency status and which special regime you qualify for. Compare the residency rules, rates and regimes side by side below, and use the interactive tool for your own income.
Which has the lower tax-residency threshold, Ireland or United States?
Ireland treats you as tax resident after 183 days, and United States after 183 days. But ties like a home, family or economic centre can trigger residency on fewer days — never rely on a day count alone.
Does Ireland or United States have a digital nomad visa?
Ireland has no dedicated digital-nomad visa; United States has no dedicated digital-nomad visa. See the "Digital nomad visa" row below for the sourced detail.