Most of the gap is opened by United States's Foreign Earned Income Exclusion regime, which displaces the standard schedule. Both countries are indicated in USD at the displayed FX.
New Zealand taxes residents on worldwide income, while United States taxes its citizens on worldwide income regardless of residence — a structural difference that shapes how each country treats foreign-source income. Top statutory rates are close — New Zealand at 39% vs United States at 37% — so the outcome turns on bracket structure, social charges, and available regimes rather than the headline rate alone.
| 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 |
| Personal income tax feie · 0% flat | — |
| Social security 22.9% employee · capped | $7,650 |
| Total deductions | $7,650 |
| Gross income | $100,000 |
| Net take-home | $92,350 |
On a $100k single-resident employment profile under each country's default schedule, United States produces the lower effective burden at 24.4% versus 28.1% in New Zealand — a 3.7 percentage-point gap that compounds to roughly $3,702 of additional take-home annually. Social-security contributions also differ: United States charges 7.6% versus 1.4% in New Zealand, adding a second layer to the effective-rate spread that doesn't show in the income-tax brackets alone.
| Instrument | New Zealand · USD | United States · USD | Δ (US − NZ) |
|---|---|---|---|
I. Personal income tax | |||
Personal income tax NZprogressive · top 39%USfeie · 0% flat | $26,865 | — | −$26,865 |
| subtotal · personal income tax | $26,865 | $0 | −$26,865 |
II. Mandatory social security & health | |||
ACC earner levy 1.39% on first NZD 142,283. NZ1.4% · capped NZ$142,283US7.6% · capped $184,500 | $1,199 | $7,650 | +$6,451 |
SECA: both employer + employee portions paid by SE. NZ—US15.3% · capped $184,500 | — | — | — |
| subtotal · mandatory social security & health | $1,199 | $7,650 | +$6,451 |
| Total deductions | $28,064 | $7,650 | −$20,414 |
| Effective rate | 28.1% | 7.6% | -20.4 pp |
| Gross income | $100,000 | $100,000 | — |
| Net take-home | $71,936 | $92,350 | +$20,414 |
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: New Zealand's Transitional Resident (0% flat) and United States's Foreign Earned Income Exclusion (0% flat). The two regime rates are nearly identical (0% vs 0%), so eligibility criteria and duration will determine which is more accessible rather than the rate itself.
For a digital nomad or remote worker on a $100k income, United States edges New Zealand by 3.7 percentage points on the default schedule — a real but not overwhelming difference that other variables may offset. Regime-eligible movers should check whether New Zealand's Transitional Resident (0%) outperforms United States's default 24.4% effective rate — for qualifying applicants it often does. New Zealand taxes residents on worldwide income, so the headline effective rate applies to total global earnings — not just locally-sourced pay.
Every line above can be traced to a primary instrument. We publish the model; you may toggle its parameters.
Read the full note ↗