The document discusses the key changes made to the TDS/TCS payment, return filing and certificates issuance procedures under the amended rules. Some of the major changes include: 1) Electronic payment of TDS/TCS through Form 17 has become mandatory for all deductors. Unique Transaction Numbers (UTNs) will be issued for each tax payment record. 2) A quarterly TDS/TCS compliance statement in Form 24C must be filed instead of quarterly returns. Annual returns must also be filed by June 15th for all quarters. 3) UTNs must now be quoted on TDS/TCS certificates. Certificates issued for deductions before April 1, 2009 can quote UTNs