Q  Can a taxpayer generate challan in multiple sittings?

Ans. Yes, a taxpayer can partially fill in the challan form and temporarily “save” the challan for completion at a later stage. A saved challan can be “edited” before finalization. After the tax payer has finalized the challan, he will generate the challan, for use of payment of taxes. The remitter will have option of printing the challan for his record

Education Guide on Goods & Service Tax (GST)