Most of the gap is opened by Ireland's Irish Non-Dom Remittance regime, which displaces the standard schedule. Both countries are indicated in USD at the displayed FX.
Both Ireland and New Zealand operate on a worldwide-income basis, though each country's bracket structure and available regimes produce materially different outcomes. Top statutory rates are close — Ireland at 40% vs New Zealand at 39% — so the outcome turns on bracket structure, social charges, and available regimes rather than the headline rate alone.
| Personal income tax progressive · top 40% | — |
| Social security 4.3% employee · uncapped | $4,275 |
| Total deductions | $4,275 |
| Gross income | $100,000 |
| Net take-home | $95,725 |
| Personal income tax progressive · top 39% | $26,865 |
| Social security 1.4% employee · capped | $1,199 |
| Total deductions | $28,064 |
| Gross income | $100,000 |
| Net take-home | $71,936 |
On a $100k single-resident employment profile under each country's default schedule, New Zealand produces the lower effective burden at 28.1% versus 30.4% in Ireland — a 2.3 percentage-point gap that compounds to roughly $2,298 of additional take-home annually. Ireland's uncapped social-security charge lifts its effective burden above what the bracket schedule alone would imply; New Zealand's contributions are capped, so high earners there pay a lower marginal social rate on income above the cap.
| Instrument | Ireland · USD | New Zealand · USD | Δ (NZ − IE) |
|---|---|---|---|
I. Personal income tax | |||
Personal income tax IEprogressive · top 40%NZprogressive · top 39% | — | $26,865 | +$26,865 |
| subtotal · personal income tax | $0 | $26,865 | +$26,865 |
II. Mandatory social security & health | |||
PRSI 4.2% Jan-Sep, 4.35% Oct → midpoint. USC is a separate income-tax-adjacent surcharge, not included here. IE4.3% · uncappedNZ— | $4,275 | — | −$4,275 |
ACC earner levy 1.39% on first NZD 142,283. IE—NZ1.4% · capped NZ$142,283 | — | $1,199 | +$1,199 |
| subtotal · mandatory social security & health | $4,275 | $1,199 | −$3,076 |
| Total deductions | $4,275 | $28,064 | +$23,789 |
| Effective rate | 4.3% | 28.1% | 23.8 pp |
| Gross income | $100,000 | $100,000 | — |
| Net take-home | $95,725 | $71,936 | −$23,789 |
Table 1 · Statutory deductions, single-filer remote worker, FY2026 indicative. All amounts in USD. n/a where instrument does not apply. | |||
Both countries offer dedicated regimes for incoming professionals: Ireland's Irish Non-Dom Remittance (30% flat) and New Zealand's Transitional Resident (0% flat). On headline rate alone, New Zealand's Transitional Resident at 0% beats the alternative at 30% — a 30-point advantage before eligibility is considered.
For a digital nomad or remote worker on a $100k income, New Zealand edges Ireland by 2.3 percentage points on the default schedule — a real but not overwhelming difference that other variables may offset.
Every line above can be traced to a primary instrument. We publish the model; you may toggle its parameters.
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