GSTR 1 and 3B Wrongly filed

If you've mistakenly omitted invoices from your February GSTR 1 and GSTR 3B filings, don't worry. You can include these invoices in your March returns. Additionally, consider writing a request letter to the GST officer to waive any applicable interest. Recent press releases indicate that late fees are waived for February, March, and April 2020 returns, and interest may not apply to businesses with a turnover under £5 crore, especially with the extended deadline of 30th June 2020 for these periods.