What is the procedure for claim and grant of refund of IGST paid on goods exported out of India

FORM RFD-01 is to be filed after:
(a) the person in charge of the conveyance carrying the export goods duly files an export manifest or an export report covering the number and the date of shipping bills or bills of export delivers it under Section 41 of Custom Act 1962; and
(b) the applicant has furnished a valid return in FORM GSTR-3 or FORM GSTR- 3B, as the case may be. Upon the receipt of the information regarding the furnishing of a valid return as mentioned above, the system designated by the Customs shall process the claim for refund and an amount equal to the IGST paid in respect of each shipping bill shall be electronically credited to the bank account of the applicant.

(ICAI FAQ PUBLICATIONS 06-09-2017 REFUNDS: FAQ NO. 23)

Under what circumstances would refund be paid to the applicant

On receipt of application, where the proper officer is satisfied as regards the refund application filed, he would pass an order sanctioning the refund. In the following situations, the refund sanctioned would be paid to applicant, –
1. refund of tax paid on zero-rated supplies of goods and/or services or on inputs or input services used in making such zero-rated supplies;
2. refund of unutilized input tax credit under Section 54(3);
3. refund of tax paid on a supply which is not provided, either wholly or partially, and for which invoice has not been issued, or where a refund voucher has been issued;
4. refund of tax in pursuance of Section 77;
5. the tax and interest, if any, or any other amount paid by the applicant, if he had not passed on the incidence of such tax and interest to any other person; or
6. the tax or interest borne by such other class of applicants as the Central or a State Government may, on the recommendation of the Council, by notification, specify. In all other cases, the amount sanctioned shall be credited to the Fund.

ICAI FAQ PUBLICATIONS 06-09-2017 REFUNDS: FAQ NO. 18)

Is there any way of obtaining a provisional sanction of refund claimed by the taxable person

Yes, the proper officer may sanction refund to a person on a condition that during any period of five years immediately preceding the tax period to which the claim for refund relates, not been prosecuted for any offence under the Act or under an erstwhile law where the amount of tax evaded exceeds two hundred and fifty lakh rupees. The proper officer, after scrutiny of the claim and the evidence submitted in support thereof and on being prima facie satisfied that the amount claimed as refund is due to the applicant, shall make an order in FORM GST RFD-04, sanctioning the amount of refund due to the said applicant on a provisional basis within a period not exceeding seven days from the date of acknowledgement.

(ICAI FAQ PUBLICATIONS 06-09-2017 REFUNDS: FAQ NO. 16)

Is there any exemption for submitting the documents required for claiming refund

Yes, if the refund claimed is less than 2 lakh rupees, then documentary evidence would not be required to be submitted. However, the applicant may file a declaration based on the documentary or other evidence available with him, certifying that the incidence of such tax and interest is not passed on to any other person.

(ICAI FAQ PUBLICATIONS 06-09-2017 REFUNDS : FAQ NO. 14)