Well, this will be easy to answer. We don't have a budget for homeschool. We did at one time but have fallen off that plan. I only buy what I have to for school each year. So far, this year, I bought a science program for my 9th grade student and some books. I buy lots of books as I find them at our local thrift store to use for History, Science and Literature. I also use my swagbucks to buy Amazon gift cards for anything we need to add each year. I guess I should track how much I spend. I would say it is $100-$300 a year if I include all of the above plus supplies for crafts and experiments.