What are the circumstances in which refund of input tax credit is permissible?

What are the circumstances in which refund of input tax credit
is permissible?
Answer: Where supplies are exported or zero-rated in terms of section 12 of the Federal VAT Bill 2010 and if the part of any adjustable input tax amount remains carried forward without being deducted against any output tax as laid down in section 37(3) of the Bill. Procedures for all categories of VAT refund shall be prescribed in VAT Rules.