There are many different ways to register a business depending on the legal protections you want to have and the size of the business you intend to build. Different business structures have their own benefits along with legal and tax implications.
When you create a last will or estate plan, there are probably two main motivating factors. The first is that you want to ensure that your loved ones have the financial support they need. The second is creating a meaningful estate by leaving specific instructions about how your assets should get distributed. In some cases, that could involve leaving money to charities, creating a scholarship or donating land for public use.
Small business owners pay much in taxes during the course of a year, and if you find out that you're going to get a return, that's an added bonus. This April, you discovered you paid too much, and now you're getting a return. The real question is what you should do with that return to help your business.