Business Calculators
Free Australian business calculators for small business owners. GST, depreciation, profit margins, and more with ATO-compliant calculations.
GST Calculator
Add or remove 10% GST from any amount. Essential for invoicing, quotes, and BAS preparation.
Depreciation Calculator
Calculate ATO depreciation using prime cost or diminishing value methods. Track asset values over time.
Break Even Calculator
Calculate your break-even point. Know how many units or revenue you need to cover costs.
Profit Margin Calculator
Calculate gross and net profit margins. Compare profitability across products or services.
Markup Calculator
Calculate selling price from cost and desired markup. Convert between markup and margin.
Cash Flow Calculator
Project cash flow over time. Plan for seasonal fluctuations and growth investments.
ABN Lookup Tool
Verify Australian Business Numbers. Check ABN validity and business details.
Invoice Calculator
Calculate invoice totals with GST, discounts, and multiple line items.
GST Quick Reference
| Category | GST Rate | Examples |
|---|---|---|
| Standard goods & services | 10% | Electronics, clothing, professional services |
| GST-free | 0% | Fresh food, medical services, education |
| Input-taxed | No GST | Financial supplies, residential rent |
| Exports | 0% | Goods and services exported overseas |
Important BAS Dates 2024-25
Q1 (Jul-Sep)
Due: 28 October
Q2 (Oct-Dec)
Due: 28 February
Q3 (Jan-Mar)
Due: 28 April
Q4 (Apr-Jun)
Due: 28 July