Australia car registration calculator (rego)
Australia car registration calculator (rego)Australian rego is a base fee plus a tare-weight motor-vehicle tax plus compulsory third-party insurance (CTP).
Worked example · Annual rego
With Tare weight of 1,400, this model computes Annual rego of 1,025 AUD. See the full working.
⚠ Illustrative rates Updated for 2025 · sources checked 2026-08-02
How registration in Australia is calculated
Australia has no CO2 car tax; the recurring cost is annual registration (rego). It combines a base fee, a motor-vehicle tax that rises with tare weight, and compulsory third-party insurance (CTP).
Rates and CTP differ between NSW, Victoria, Queensland and other states. The calculator uses an illustrative NSW-style structure. Estimate, not advice.
Worked example
ShowHide the full working: 1 input, 2 computed steps
| Inputs | |
|---|---|
| Tare weight (kg) | 1,400 |
| Computed by the engine | |
| Weight Component ✓ pinned | 490 |
| Annual rego ✓ pinned | 1,025 AUD |
Every computed row comes from the engine, run on the inputs above. Rows marked ✓ pinned are also fixed by a published self-test, so a change to the model that moved them would fail its own tests.
Frequently asked questions
How much is rego for a 1,400 kg car?
Around 1,025 AUD a year in the illustrative NSW-style model, including CTP.
Does rego depend on weight?
Yes — the motor-vehicle tax component rises with the car's tare weight.
Why does rego differ by state?
Each state sets its own fees and CTP premiums, so totals vary.
Sources
- Service NSW rego · checked 2026-08-02
Estimate. Not tax advice. The rates in this calculator are illustrative: they reproduce the shape of the charge through 2 self-test cases, but they are not the official schedule, so the amount shown will not match your bill. Use the official source above for that.
Check the arithmetic yourself: how this calculator is verified — the formula behind every derived value, the 2 test cases the engine reproduces, and what the badge does and does not claim. Also available as machine-readable JSON.
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