Accuracy and testing
Inspect the checks behind your estimate
27 focused annual pay checks passed on 14 September 2026.
Source check: 14 September 2026 Calculation checks run: 14 September 2026
What was checked
The site's annual calculation module was executed against independently specified expected values for resident tax brackets, ordinary single Medicare levy, the lower HELP threshold and an ordinary salary package including super. All 27 comparisons passed to the cent.
These are formula and boundary checks, not the ATO's payroll example suite. They do not prove all scenarios are correct, certify every calculator, or constitute an independent professional audit.
Results
| Case | Expected | Actual | Result |
|---|---|---|---|
| Resident income tax at $0 | $0.00 | $0.00 | Pass |
| Resident income tax at $18199 | $0.00 | $0.00 | Pass |
| Resident income tax at $18200 | $0.00 | $0.00 | Pass |
| Resident income tax at $18201 | $0.15 | $0.15 | Pass |
| Resident income tax at $44999 | $4,019.85 | $4,019.85 | Pass |
| Resident income tax at $45000 | $4,020.00 | $4,020.00 | Pass |
| Resident income tax at $45001 | $4,020.30 | $4,020.30 | Pass |
| Resident income tax at $134999 | $31,019.70 | $31,019.70 | Pass |
| Resident income tax at $135000 | $31,020.00 | $31,020.00 | Pass |
| Resident income tax at $135001 | $31,020.37 | $31,020.37 | Pass |
| Resident income tax at $189999 | $51,369.63 | $51,369.63 | Pass |
| Resident income tax at $190000 | $51,370.00 | $51,370.00 | Pass |
| Resident income tax at $190001 | $51,370.45 | $51,370.45 | Pass |
| Single Medicare levy at $28010 | $0.00 | $0.00 | Pass |
| Single Medicare levy at $28011 | $0.00 | $0.00 | Pass |
| Single Medicare levy at $28012 | $0.10 | $0.10 | Pass |
| Single Medicare levy at $30000 | $198.90 | $198.90 | Pass |
| Single Medicare levy at $35012 | $700.10 | $700.10 | Pass |
| Single Medicare levy at $35013 | $700.26 | $700.26 | Pass |
| Full Medicare exemption at $85000 | $0.00 | $0.00 | Pass |
| HELP repayment at $69527 | $0.00 | $0.00 | Pass |
| HELP repayment at $69528 | $0.00 | $0.00 | Pass |
| HELP repayment at $69529 | $0.15 | $0.15 | Pass |
| HELP repayment at $70000 | $70.80 | $70.80 | Pass |
| HELP capped at $50 remaining balance | $50.00 | $50.00 | Pass |
| $112000 including super: salary | $100,000.00 | $100,000.00 | Pass |
| $112000 including super: super | $12,000.00 | $12,000.00 | Pass |
Download the machine-readable results and source links.
Rule evidence
- Resident income tax brackets — legislation
- Medicare levy thresholds — legislation
- Lower HELP repayment threshold — StudyAssist
- 12% super guarantee — ATO
Scope and limitations
This run does not verify PAYG schedules, family reductions, surcharge cases, senior offsets, upper HELP band rounding, high-income super caps or other calculators. The methodology explains the model and its assumptions. The rate register identifies carried-forward values.
Found a difference?
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