The tax invoice is the basic document for movement of goods or provisioning of services, making the recipient of goods/services entitled for availing Input Tax Credit on receipt of relevant goods/services and, claiming refunds of tax or ITC, evidencing the cross utilization of IGST/ CGST/UTGST/SGST by the registered person. The taxable persons are required to issue Invoice in the format prescribed under the law specifying there under the description of goods/services, it unique classification codes at different digit level for different class of taxpayers, value of supply, tax rate, tax payable under eligible category La CGST and SGST or CGST and UTGST or IGST etc. the other information like commission charges, freight, insurance etc. Under GST the incidence of paying taxes arise at the time of supply of goods/services. However, facility has been given to the taxpayers to pay tax at the time of furnishing Returns under Secs. 39 to 45 of CGST Act, 2017 which is applicable mutatis mutandis to the provisions of UTGST Act, 2017, IGST Act, 2017 and draft SGST law.
Further, provisions have been made to cover up different scenarios of the modification of invoice through debit note and credit note where supplier and recipient of goods and/or services are same and the modification is on account of the quantum of goods/services supplied, tax amount etc. so as to avoid complications of frequent invoice modification after its issuance. Hence modification may be done only where there are some clerical mistakes and factually figures are different. Modification is also permitted in the cases of issuing revised invoice where a person who has become liable for payment of tax but has not issued proper invoice during the period he is in process to obtain registration.
Sections 31 to 34 of the CGST Act, 2017 contain the provisions related to Tax invoice, documents to be issued for supply/receipt of goods services, credit notes and debit notes. Section 20 and section 21 of the IGST Act, 2017 and UTGST Act, 2017 respectively, also mandate the applicability of provisions of tax invoice, credit note and debit note provided in CGST Act for the purpose of IGST and UTGST.
Manner Of Issuance Of Tax Invoice
1. The invoice shall be prepared in triplicate, in case of supply of goods, in the following manner:—
a. the original copy being marked as ORIGINAL FOR RECIPIENT;
b. the duplicate copy being marked as DUPLICATE FOR TRANSPORTER; and
c. the triplicate copy being marked as TRIPLICATE FOR SUPPLIER.
2. The invoice shall be prepared in duplicate, in case of supply of services, in the following manner:—
a. the original copy being marked as ORIGINAL FOR RECIPIENT; and
b. the duplicate copy being marked as DUPLICATE FOR SUPPLIER.
3. The serial number of invoices issued during a tax period shall be furnished electronically through the Common Portal in Form GSTR- 1.
Invoice And Payment Voucher For Supplies Taxable In Reverse Charge
Section 9(3) of CGST Act covers the provisions for reverse charge and section 9(4) covers the purchase from an unregistered supplier. In these cases the liability to pay tax is on recipient. The supplier is not registered and will not be able to issue an invoice or any document under GST law. A registered person who is liable to pay tax under sub-section (3) or sub-section (4) of section 9 shall issue an invoice in respect of goods or services or both received by him from the supplier who is not registered on the date of receipt of goods or services or both. A registered person who is liable to pay tax under sub-section (3) or sub-section (4) of section 9 shall issue a payment voucher at the time of making payment to the supplier who is not registered in GST.
A registered person may, within one month from the date of issuance of certificate of registration and in such manner as may be prescribed, issue a revised invoice against the invoice already issued during the period beginning with the effective date of registration till the date of issuance of certificate of registration to him. The word “Revised invoice” shall be indicated prominently on revised invoices.