Every company needs to know how well it is doing on the market, no matter what the market of the operation is. While this knowledge can be obtained from accounting software, it requires a very accurate set of accounting books and being current with changes in various regulations (including legal and tax). By employing a professional accountant you significantly reduce the risk of misunderstanding your business records and misleading yourself.
On top of preparing a set of financial statements (balance sheet and income statement) for your company we also file a corporate tax return. Most of the small businesses actually are required to have a set of financial statements in order to prepare information for a tax return.