Small Business Made O'So Simple

Take control of your small business with OSO Books.
Big features, small price, available anywhere you are.

All of OSO Books powerful features, available anywhere you are.

Get OSO Books for iPhone and iPad
Get OSO Books for Android

Easy Invoices

Quickly generate and send professional invoices with your business logo from any device, anywhere.

Receive Payment

Make payment easy for your customers, with safe, direct payment of invoices via Credit Card and PayPal.

Inventory Management

Effortless integration of Products and Services you offer into Invoices, with auto stock level adjustment.

Powerful Reporting

Dependable Income and Expense tracking, powerful dashboards, business metrics and tax-ready reporting.

Create and Send Invoices

Simplify client billing with professional branded invoices, generated and issued within minutes.

  • Clean, professional layouts with your business logo
  • Link inventory items with automatic stock updates
  • Email direct to customers as you generate invoices
  • Receive direct payment via PayPal and Credit Card
  • Capture and report on your tax requirements (optional)
  • Automated payment notification and due/overdue reminders
  • Support split payments for invoices over customised timespans
  • Schedule and automate recurring invoices for repeat billing

Manage Inventory

Track and organise physical goods and services you offer, with easy invoice generation at your list price.

  • Track profit from your buy price versus invoiced/list price
  • Automatic stock level updates for inventory linked to invoices
  • Customisable low stock level notifications
  • On demand reporting and exporting to PDF and CSV

Income and Expense Tracking

Stay on top of your financials with dependable Income and Expense tracking. Analyse your business costs to identify areas to increase your margins

  • Profit and Loss live dashboard - Always know your position
  • Tax-ready financial year summary reports
  • Customisable data exports to CSV and PDF
  • Attach receipt photos, emails and files to your expense records

Powerful Reporting

View important metrics to assess business performance and identify opportunities. Gain valuable insight into all areas of your Invoicing, Expenses, Inventory and Customers.

  • Report on demand, over any time span with parameters you select
  • Highlight areas of improvement hidden within your day-to-day business data
  • Pin your regular reports and parameters for rapid generation
  • Full auditing of all actions for users of your accounting package

Let's get you started!

Start working with OSO Books today. No credit card required, completely free for 14 days. You will be generating professional invoices for your customers in minutes!

Affordable Packages

We have a plan to suit your business. Get exactly what you need, at the right price, with pro-rata upgrades available at any time as your business grows.


$ 0  / 14 Days

Give OSO Books a try free for 14 days, no credit card required. You will be issuing your first invoice within 10 minutes!

Limited features
10 email limit   
Your own private trial subdomain
Single user account

Get Started
best value


(AUD)   $ 49  / Year

Suited to the small business owner that averages up to one invoice per day, monthly. The perfect starting point, with big features at a small price.

All product features
Custom invoice branding/logos
35 emails per month   
Your own private subdomain
Single user account

Get Started


(AUD)   $ 89  / Year

Suited to established business. No limits on email notification, support for emails sent from your own domain, and 2 concurrent user accounts with the option to add more if required.

All product features
Custom invoice branding/logos
Custom SMTP Server Support
Unlimited emails per month
Your own private subdomain
2 user accounts included, upgrades available
Auditable user permissions

Get Started