What percentage of sales turnover should be spent on accountancy fees by SMEs and micro businesses?

Budget is a vital consideration for every small business owner. Whether or not to hire an accountant, however, is one professional service that shouldn't be overlooked.

Depending on your business need for accounting services, most business owners at a minimum should hire a professional to prepare their tax returns. Beyond that, small business owner clients often do fine with managing their own day-to-day book keeping. But often, the time needed to properly maintain ledgers and business records does require the need to hire a book keeper or accountant to keep up with their records.

The accounting needs of small business can vary just like the ability and skills of the business owner can vary, so the cost could be anywhere from only a few hundred dollars a year to a few hundred dollars a month depending on the needs.
(source: Quora)