Section 234B of the Income Tax Act levies penalty interest on taxpayers who fail to pay advance tax during the assessment year.

Section 234C imposes interest when there is a default in paying advance tax. The interest is calculated based on the amount of tax payable and the delay period between the due dates of the installments.

Section 234F of the Income Tax Act pertains to the late filing fee applicable if a person required to file an Income Tax Return (ITR) under section 139(1) fails to do so within the specified time limit.

When filing your Income Tax Return (ITR), you can claim deductions for certain investments and expenses. To do this, you need to provide proofs of these investments, such as donation receipts, fixed deposit statements, and other relevant documents.