Key takeaways
What this article covers, in order:
- Your free filing calendar
- Step by step
- How HelloBooks helps
- Frequently asked questions
Missing a due date is the easiest penalty to avoid — and the calendar is free.
Your free filing calendar
Keep a running list of your return due dates; most GST software, including HelloBooks, shows them free with reminders.
- GSTR-1 (outward supplies): 11th of the next month, or quarterly under the QRMP scheme.
- GSTR-3B (summary and tax payment): 20th of the next month, or 22nd/24th quarterly under QRMP.
- CMP-08 (composition dealers): 18th of the month after each quarter.
- GSTR-9 (annual return): 31 December of the following financial year.
Step by step
- Open the official GST portal or a free GST tool.
- Enter your details for the period or transaction.
- Review the result and keep a copy for your records.
Rates change at GST Council meetings, so always confirm the current figure for your exact HSN or SAC code on the CBIC rate finder or the GST portal before you print it on an invoice.
How HelloBooks helps
You do not have to track any of this on a spreadsheet — HelloBooks does it for you. HelloBooks is free GST accounting software for Indian businesses: you can raise GST-compliant invoices with the correct HSN or SAC code, track input tax credit against your GSTR-2B, and file unlimited GSTR-1 and GSTR-3B returns from one dashboard.
- GST-ready invoicing with automatic CGST / SGST / IGST split and HSN or SAC codes.
- GSTR-2B reconciliation so you only claim the input tax credit you are actually entitled to.
- GSTR-1 and GSTR-3B filing free, with GSTR-9 generated ready to file and e-invoicing on higher plans.
- Due-date reminders so a late fee never catches you by surprise.
Thousands of founders, freelancers and accountants in India run their books on HelloBooks — you can start free, with no credit card.
Frequently asked questions
Where can I get a free GST due-date reminder?
Free GST software like HelloBooks shows your due dates and sends reminders at no cost.
Do I need a CA for this?
No — the process is online and self-service. A professional is optional and only needed for complex or disputed cases.
Does HelloBooks offer this for free?
Yes. HelloBooks is free GST accounting software for India: free GSTR-1 and GSTR-3B filing, GST-ready invoicing and GSTR-2B reconciliation, no credit card to start.

