All about Defective Returns u/s 139(9) and Way of Rectifying it

Why do you need PAN? Where is quoting PAN mandatory?

Whether supply of spare parts/accessories and repair service where principal supply is repair service is taxable at 18% or not as a composite supply?

Whether sale in cash or against cheque, draft etc is prohibited now? Whether any undertaking is needed for accepting payment against cash sale?

Whether penalty under section 271D is leviable on cash loan received from father?

Whether payment towards outsourcing services attracts TDS?