Built for Australian small business workflows

Free Australian business tools

Calculate GST, verify ABNs, create invoices, and handle PDF work in one fast browser toolkit.

GST and business calculators

Quick answers for pricing, tax, salary, ROI and margins.

ABN lookup

Check business numbers and GST registration details.

PDF and document tools

Merge, split, compress, convert and prepare business files.

No signup for core tools
Mobile-ready forms
Clear Australian context
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Business Tools

Invoice Generator

Professional Australian tax invoices

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Business Tools

Quote Generator

Professional business quotes

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Business Tools

ABN Lookup

Verify business numbers & GST status

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Calculators

Stamp Duty Calculator

Calculate property stamp duty for NSW, VIC & QLD (2025-26 rates)

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Calculators

GST Calculator

Add or remove 10% GST instantly

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Calculators

Profit Margin Calculator

Calculate margins, markup & gross profit

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Calculators

ROI Calculator

Calculate return on investment

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Calculators

Salary Calculator

Calculate take-home pay (2025-26 rates)

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Calculators

JobSeeker Calculator

Calculate Centrelink JobSeeker payment

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Calculators

FHSS Calculator

First home super saver scheme benefits

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Calculators

Redundancy Calculator

Calculate redundancy pay & Centrelink wait

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Calculators

Sole Trader Tax Optimiser

Find out exactly what to do before 30 June to minimise tax

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Calculators

Break-Even Calculator

Calculate break-even point for your business

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PDF Tools

Merge PDF

Merge 2 or more PDF files into one

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PDF Tools

Compress PDF

Lessen the file size of a PDF file

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PDF Tools

Split PDF

Extract pages from your PDF

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PDF Tools

Rotate PDF

Rotate PDF pages as needed

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PDF Tools

PDF to Word

Convert PDF files to editable Word documents

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PDF Tools

PDF to Excel

Convert PDF tables to Excel spreadsheets

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PDF Tools

Image to PDF

Convert images to PDF documents

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PDF Tools

Markdown to Word

Convert Markdown to Word documents

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Image Tools

Image to WebP

Convert images to WebP format for faster loading

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Image Tools

Remove Background

AI-powered background removal from images

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Built for repeated business admin work

Privacy-aware workflows

Browser-based tools keep common file tasks quick and reduce unnecessary account setup.

Australian context first

GST, ABN, salary, invoice and tax-adjacent tools use Australian terminology and assumptions.

One hub, fewer tabs

Keep calculators, PDF utilities, invoices and quote workflows in one predictable place.

Frequently Asked Questions

Are these tools really free?

Yes! All our core business tools are completely free to use. No signup required, no credit card needed. We offer premium features for advanced users, but the essential tools will always be free.

Do I need to create an account?

No. All tools work instantly without any registration. Just open the tool and start using it. If you want to save your work or access premium features, you can optionally create a free account.

Are the calculations ATO compliant?

Yes. Our GST calculations follow ATO guidelines, invoices include all required elements (ABN, GST), and our ABN lookup uses official Australian Business Register data. However, always consult with a qualified accountant for tax advice.

Can I use these tools on mobile?

Absolutely! All our tools are fully responsive and work perfectly on mobile phones, tablets, and desktop computers. Use them anywhere, anytime.

What makes OzSparkHub different from other business tools?

We focus exclusively on Australian businesses. Every tool is built with Australian tax laws, ABN requirements, and GST compliance in mind. Plus, our tools are designed to be simple and fast - no complicated setups or learning curves.

How accurate is the ABN Lookup tool?

Our ABN Lookup tool sources data directly from the Australian Business Register (ABR), the official government database. The information is as accurate and up-to-date as the ABR itself.

Pick a tool and finish the admin task

Start with GST, ABN lookup, invoices, PDF tools or business calculators.

    Free Australian Business Tools | GST, ABN, PDF and Invoice Tools