Deduction from house property: 30% standard deduction and spreadable pre acquisition interest with capped interest relief.
Deductions for Income from House Property allow a 30% standard deduction on annual value (as determined under section 21) and interest on borrowed capital for acquisition/construction; pre acquisition interest is spread in five equal instalments beginning in the year of acquisition/construction, spread amounts must be reduced by interest already allowed under other provisions, and capped aggregate interest deductions apply with certificate and completion conditions, while interest payable outside India is disallowed unless appropriate tax withholding or agent arrangements exist.