subtraction](https://www.revenue.state.mn.us/home-school-expenses), either of which can help to reduce tax liability for the year. - Iowa: Starting in 2021, a proposed rule change will extend Iowa’s [textbook tax credit](https://homeschooli Listed on A2Z Homeschooling archive: https://homeschooling.gomilpitas.com/legalities/a-tax-write-off/