This is a very frequently asked question. I started at the age of 4 and I’ve started my youngest daughter at the age of 3. It can very much depend on the child, but it’s common to hear of piano teachers turning away children under the age of 7. I do offer lessons for younger children, and very soon I will have my hands on resources for teaching preschoolers one on one, rather than in group lessons. So stay tuned!
Here is a great article that talks about starting music at a young age. Worth a read 🙂