TDS on salaries: employers must deduct at payment on estimated salary including perquisites; employer may pay tax on non monetary perquisites. Any person paying income chargeable under the head 'Salaries' must deduct tax at source at the time of payment by computing tax on the employee's estimated salary income for the financial year, applying the average rate based on rates in force. Employers may opt to pay tax on non monetary perquisites, which is treated as TDS and exempt in the employee's hands. Employees must furnish prescribed particulars of other income, tax deducted, and house property loss for employers to take into account when computing TDS; prescribed forms and rules govern valuation, foreign currency conversion, statements of perquisites, and issuance of TDS certificates.