Whether you own a business or are entering into some financial agreement unrelated to business, lawyers will tell you never to sign on the dotted line unless you fully understand everything. Consulting with family lawyers about financial agreements is the best way to ensure the other person is not taking unfair advantage of you.
Financial agreements can be very simple or much more complicated, and you are unlikely to understand the implications of everything you read in it, even if you think it is clear. In business, there are many ways of saying things legally that spin the meaning around to give favour to the person who is offering the agreement. Unless you have a lawyer go over it and explain it all to you, you could be disadvantaged in some way.
When a lawyer examines the agreement, he or she can tell you if it is fair and whether it could be worded differently to ensure you only pay what you are legally required to. Your solicitor will be able to add a clause or adjust one so that there is no chance of you being taken advantage of.