Originally Posted by rowan

Dunno about your part of the world, but in mine we need to declare the proportion used for business.

If you're that worried about paying an accountant then go to a cheapie place like H&R. It's not the best but you'll probably still find some things that you wouldn't have thought of yourself. Their bill should be tax deductable.

Remember you're not just claiming basic outgoing bills; you can probably also claim things like office expenses, conventions and business get togethers.