Question32:

1) Supplier raise a bill of Rs 100000 in Jan and paid IGST
2) In Feb there is reversal of Rs 25000 in the bill of Rs 100000 raised in Jan.
3) The output supply for February is Rs 10000 having liability of IGST
3) In February after giving effect of credit note the output supply comes Negative by Rs 15000 and IGST negative on the same.
Pl advice how to deal the same situation while filling GSTR 3B for teh Month of February 2018.

Answer:

Solution to your problem is given in para 4 of CBEC Circular No. 26/26/2018-GST dated 29.1122017 which is reproduced below;
4.  It is clarified that as return in FORM GSTR-3B do not contain provisions for reporting of differential figures for past month(s), the said figures may be reported on net basis along with the values for current month itself in appropriate tables i.e. Table No. 3.1, 3.2, 4 and 5, as the case may be. It may be noted that while making adjustment in the output tax liability or input tax credit, there can be no negative entries in the FORM GSTR-3B. The amount remaining for adjustment, if any, may be adjusted in the return(s) in FORM GSTR-3B of subsequent month(s) and, in cases where such adjustment is not feasible, refund may be claimed. Where adjustments have been made in FORM GSTR-3B of multiple months, corresponding adjustments in FORM GSTR-1 should also preferably be made in the corresponding months.
According to the above clarification you may make adjustments during subsequent months of the credit pertaining to sale returns instead of taking entire credit 
in one month which is resulting into negative payable tax under appropriate heads. (Reply dt. 20/3/2018)