Advance tax intimation form allows correction of estimated income, deductions, rebates, and balance payable under the demand notice process. Intimation to the Assessing Officer under section 407(8) is used in response to a notice of demand under section 289 for advance tax under section 407(2) or section 407(5). The form allows the assessee to explain why the estimate of income and advance tax is excessive, including arithmetical error, mistake apparent from record, loss or no capital gains, absence of specified income, or other reasons, and to submit a revised computation of income subject to advance tax with deductions, rebates, tax already paid, and balance payable.