220+ free calculators and tools for Australian tax, finance, mortgage, health, math, and more — all updated for 2025–26.
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Australian income tax, CGT, Medicare, FBT, super contributions, Division 293, and more — updated for ATO 2025–26.
Mortgage, investment, retirement, auto loans, and 60+ Australian financial calculators.
BMI, BMR, calories, pregnancy, fitness, and more — all metric-first for Australian users.
Fractions, percentages, algebra, statistics, geometry, and more.
MegaCalcOnline.com is built specifically for Australians. Every financial and tax calculator uses the latest ATO rates, Fair Work Act provisions, and Australian-specific rules — not the US-centric figures you find on most calculator sites.
All tax calculators use 2025–26 ATO brackets. Mortgage calculators use RBA-aligned rates and Australian stamp duty. Super calculators use the 12% SG rate and current contribution caps. Medical calculators use Australian health benchmarks.
Every calculator is updated to reflect the current financial year: LITO, HECS-HELP thresholds, Medicare Levy Surcharge thresholds, super contribution caps ($30K concessional), and Fair Work minimum wage ($24.10/hr).
All 220+ calculators are completely free. No registration, no email required. Just click and calculate.
In-depth guides written by our finance team to help you understand Australian tax, super and property
MegaCalcOnline.com gives every Australian access to accurate, free calculator tools and financial guides — updated for the 2025-26 ATO financial year and beyond.
Calculate your exact take-home pay using current 2025-26 ATO tax brackets. Our income tax calculator handles Medicare levy, LITO offset, salary sacrifice, and HECS-HELP repayments — all updated after the Stage 3 tax cuts and the July 2025 HECS reforms. Used by employees, contractors, and small business owners across Australia.
From borrowing power (with the APRA 3% serviceability buffer) to stamp duty across all 8 Australian states and territories — our mortgage calculators use current June 2026 RBA data and actual bank rate ranges. Whether you are a first home buyer, refinancing, or comparing investment property returns, we have the tool you need.
Australia's retirement system is among the most complex in the world. Our super calculators cover contribution caps (2025-26: $30,000 concessional), salary sacrifice tax savings, Division 293 tax, transition-to-retirement strategies, and projected retirement balances using ASFA benchmarks. Updated for payday super (1 July 2026).
Use the navigation menu above to browse calculator categories, or use the search bar at the top to find any specific calculator by name. The most commonly used calculators are linked in the Popular bar below the header — income tax, salary, mortgage, CGT, BMI, and super contributions.
Each calculator page includes a step-by-step "How to Use" guide, worked examples using realistic Australian figures, and a Frequently Asked Questions section covering the most common queries around that topic. Our Blog section contains 50+ in-depth articles covering Australian tax, mortgage, superannuation, and health topics — each written with reference to official ATO, Services Australia, and government sources.
Calculator results are estimates for guidance purposes. For decisions involving significant money — property purchases, superannuation strategies, tax lodgement — always confirm with a qualified professional such as a registered tax agent or licensed financial adviser.
MegaCalcOnline.com is operated by SM Services Pty Ltd, a Melbourne-based Australian business. All calculators and content are provided for general information only and do not constitute financial, tax, legal, or medical advice. Always consult a qualified professional before making financial decisions. Learn more about us →
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