Here is some advice which is exactly opposite -
uestion – One of the most common asked question these days is that we have missed one purchase/sales invoice in the current month’s GSTR-3B. Can we show it in subsequent month’s GSTR-3B Return?
Answer – Government has enabled GSTR3B revision facility for submitted but not filed a return and it is being expected that soon the revision facility might be provided for filed return as well. Although no official confirmation as to this has yet been notified. So, if you have the option consider revising the return.
Ideally, the current month’s data if missed should not be furnished in subsequent month’s GSTR3B, due to the fact GSTR3B is the summary return which shall be matched with the GSTR1 and GSTR2 at some later point of time. This can lead to a mismatch between the data. Although return like GSTR-1 provides the option to amend the earlier furnished data, GSTR-3B does not separately provides for any such option and thus legally and ideally this should be avoided. Any mistake in GSR3B shall be corrected in GSTR1 and GSTR2 only. However, taxpayers are facing issue because no mechanism for GSTR2 has been notified yet.