Some taxpayers forget to disclose certain income, even if unintentionally. This is the case particularly with salaried individuals who rely primarily on their Form 16, which does not contain details of capital gains, fixed or savings deposit interest income, for instance. While the detailed Annual Information Statement (AIS) that collates your financial transactions could prevent such mistakes, you need to be careful. If the income tax department detects this missing income, you could end up getting a notice. Ensure that you file a revised return as soon as you notice errors in disclosing any income.