Income from other sources: gifts and certain receipts taxed when exceeding prescribed thresholds, subject to defined exclusions and valuation rules. Income from other sources is a residual head taxing receipts not charged elsewhere, including dividends, gambling winnings, interest, hire income, certain insurance proceeds, forfeited advances in failed transfers, specified business trust distributions, and gifts or property received without adequate consideration above prescribed thresholds, subject to enumerated exclusions and valuation rules for immovable and other property, and defined computation methods for business trust distributions and life insurance receipts.