Demo account access times vary across brokers. Some may expire after 30 days of inactivity, while others remain open indefinitely. It’s advisable to trade actively on your demo and refresh your skills continually rather than leaving accounts dormant for too long.
Many of the best online stock brokers with demo accounts will let you reopen your account if its time limit expires, however, some don’t, so make sure you read any terms and conditions before signing up.