9 tips for choosing the right contractor accountant In London A contractor accountant can be a valuable advisor for your small businesses. They keep your books in order, help with tax planning and ensure you meet all your deadlines. It is important to have an expert accountant, as it can help you minimize accounting fees and time. Here are some tips to help you choose the best contractor accountant 1. Choose a specialist over a generalist Consider choosing a specialist accountant contractor who understands key issues. Your accountant should be able to advise you on your venture expenditure, tax registrations and legal matters. Generalist will cause problems when your business starts to scale.