You should only buy a business after due diligence, which means obtaining and analysing all the information you need to decide whether to buy and how much the business is worth. Failing to take time to find out about all aspects of the business may result in a costly mistake. The information you get and analyse should relate to all areas of the business, both financial and non-financial. Get detailed professional valuations of all assets and liabilities of the business you want to buy to reduce the risk of making a bad purchase and give your potential business the best chance of success.