NGOs are exempt from Income Tax. However, this is not automatic. You need to apply to Income Tax Office to get this exemption. You can get exemption from tax on society’s income under section 12A.
This exemption is available for all non-profit NGOs. Unfortunately, many NGOs have not applied for this even after 10-15 years of working. This delay can be forgiven if you apply with sufficient reasons.
Income of an organization is exempted if NGO has 12-A registration. All income shall not be taxable after 12-A registration. This is one time registration. If the NGO is not registered, income tax is payable on surplus during the year. This is one time registration.