The FAFSA takes around 1 hour to complete if you do it online or 3 hours if you do it by paper. It takes around 3 to 5 days to receive the results if you include an email or 7 to 10 days if you only included a physical address.
You’ll need to fill out the FAFSA once per year, every year that you’re attending school and want financial aid. Even if you don't need federal student loans or think you'll qualify for grants or scholarships, you should still fill it out just in case you do.
Your legal residence for the FAFSA typically is where your parents or legal guardians live. There are, however, often situations where the answer isn't so clear such as when your parents live in different locations.