The basic exemption threshold for persons set forth by income tax law is the amount up to which taxpayers are exempt from paying taxes. This ceiling varies depending on the type of taxpayer. Individuals under 60 are exempt from paying taxes up to a maximum income of Rs 2.5 lakh. When their income is up to Rs 3 lakh, people over 60 but under 80 are exempt from paying tax. Over 80-year-olds are exempt from paying taxes on income up to Rs 5 lakh. Under the new tax regime, Rs 2.5 lakh is the fundamental exemption ceiling for all individuals, regardless of age.