About GlobalCalc

GlobalCalc provides free, fast, and transparent financial calculators for Australians.

How it works

Every calculation runs entirely in your browser using deterministic, auditable engines built with precision arithmetic (Decimal.js). No data is sent to any server. No account required.

What we cover

Property, tax, superannuation, savings, income, debt, business, and cost of living calculators — all designed for Australian rules and rates.

Our standard

Each calculator is tested against known inputs and outputs, locked to a verified result schema, and version-controlled. Every engine is reproducible.

Data sources & accuracy

Our calculators use official rates, thresholds, and formulas published by the Australian Taxation Office (ATO), state revenue offices, and the Reserve Bank of Australia (RBA). We update these when rates change and clearly state the financial year or effective date on each calculator.

How we test

Every calculator is tested against known inputs and expected outputs (test vectors). These tests run automatically before every deployment. If a test fails, the calculator cannot go live. This ensures calculation accuracy is maintained as the site grows.

Privacy

All calculations run entirely in your browser. No data is sent to any server. No account is required. No personal information is collected. We use privacy-respecting analytics with no cookies or personal tracking.

Limitations

These calculators provide estimates for general informational purposes only. They do not constitute financial, tax, or legal advice. Individual circumstances vary and results depend on the accuracy of your inputs. Always consult a qualified professional before making financial decisions.

Contact

For corrections, suggestions, or inquiries: hello@globalcalc.net