If you're in search if a simple extension for accounting, there is a native Magento one if, say, you run a Magento store - Integrated Magento Accounting (searchable in Google) from MageDoc. We suggest that you give it a try to save a great deal of time and speed up all the operations by automating the majority of them with such useful features as Auto-Posting Rules, Reconciliation & Grouping, Importing and User Access. With its high functionality, outstanding data visualization and award-winning support, you will never look back.
Let me know if I can help you get started in any way.