The gap is driven by the headline tax structure — no special regime applied. Both countries are indicated in USD at the displayed FX.
Both Australia and Mexico operate on a worldwide-income basis, though each country's bracket structure and available regimes produce materially different outcomes. Australia's top marginal rate of 45% is 10 percentage points above Mexico's 35%, making the statutory gap one of the largest variables in this comparison.
| Personal income tax progressive · top 45% | $24,722 |
| Social security 2.0% employee · uncapped | $2,000 |
| Total deductions | $26,722 |
| Gross income | $100,000 |
| Net take-home | $73,278 |
| Personal income tax progressive · top 35% | $26,271 |
| Social security 4.1% employee · uncapped | $4,100 |
| Total deductions | $30,371 |
| Gross income | $100,000 |
| Net take-home | $69,629 |
On a $100k single-resident employment profile under each country's default schedule, Australia produces the lower effective burden at 26.7% versus 30.4% in Mexico — a 3.6 percentage-point gap that compounds to roughly $3,648 of additional take-home annually. The 10-point spread in top statutory rates is the primary driver; above their respective thresholds, each additional dollar is taxed at 45% in Australia but only 35% in Mexico.
| Instrument | Australia · USD | Mexico · USD | Δ (MX − AU) |
|---|---|---|---|
I. Personal income tax | |||
Personal income tax AUprogressive · top 45%MXprogressive · top 35% | $24,722 | $26,271 | +$1,548 |
| subtotal · personal income tax | $24,722 | $26,271 | +$1,548 |
II. Mandatory social security & health | |||
Medicare Levy +2% of taxable income. Superannuation is employer-paid. AU2.0% · uncappedMX— | $2,000 | — | −$2,000 |
IMSS + AFORE ~4.1%. AU—MX4.1% · uncapped | — | $4,100 | +$4,100 |
| subtotal · mandatory social security & health | $2,000 | $4,100 | +$2,100 |
| Total deductions | $26,722 | $30,371 | +$3,648 |
| Effective rate | 26.7% | 30.4% | 3.6 pp |
| Gross income | $100,000 | $100,000 | — |
| Net take-home | $73,278 | $69,629 | −$3,648 |
Table 1 · Statutory deductions, single-filer remote worker, FY2026 indicative. All amounts in USD. n/a where instrument does not apply. | |||
Mexico offers the RESICO (Simplified Regime) (flat 2% on qualifying income) for qualifying incoming residents; Australia has no equivalent ICP-targeted regime currently modelled — new residents there enter the standard Australia schedule immediately. For movers who don't qualify for Mexico's RESICO (Simplified Regime), both countries revert to their default progressive schedules, where Australia's lower top rate still gives it a structural edge.
For a digital nomad or remote worker on a $100k income, Australia edges Mexico by 3.6 percentage points on the default schedule — a real but not overwhelming difference that other variables may offset. The calculus shifts if the RESICO (Simplified Regime) is available: eligible movers may find Mexico the stronger play once the regime replaces the default schedule.
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