Reminder Library ยท Finance & Bills ยท Updated July 2026

GST deadlines do not move. Your memory does.

GSTR-1 on the 11th, GSTR-3B on the 20th, every single month, plus late fees per day when you slip. Put the nag on WhatsApp where you actually look.

First 5 reminders free ยท No app, no signup, no forms

How to set a GST due date reminder on WhatsApp

To set a GST due date reminder on WhatsApp, text NagMeLater "Remind me on the 8th of every month at 10am to prepare GSTR-1 filing data", or tap a button below to send it in one tap. The bot confirms the schedule and nags you at the right moment. No app, no signup, first 5 reminders free.

GSTR-1 (11th)

Monthly outward supplies return, three days of buffer.

Message that gets sentRemind me on the 8th of every month at 10am to prepare GSTR-1 filing data

GSTR-3B (20th)

The summary return and tax payment, two days early.

Message that gets sentRemind me on the 18th of every month at 10am to file GSTR-3B and pay GST

Send data to CA

Get invoices to your accountant at the start of the month.

Message that gets sentRemind me on the 3rd of every month at 11am to send last month's invoices to my CA

Why GST filings slip in real businesses

Filing season never ends

GST is not a yearly scramble, it is a monthly treadmill. The 11th and the 20th come around every month whether you had a busy week or not.

The person who files is not the person who forgets

Your CA files the return, but they need your invoices and data days earlier. The deadline that actually matters is the one for sending them your documents.

Late fees accrue per day, per return

Miss GSTR-3B and you pay a daily late fee plus interest on the tax due. It is small enough to ignore once and expensive enough to regret over a year.

GST dates worth pinning down

The 11th and the 20th are the big two

GSTR-1 (outward supplies) is due the 11th of the following month, GSTR-3B (summary plus payment) the 20th. Quarterly filers under QRMP have the 13th and the 22nd or 24th, edit the message to match.

Late GSTR-1 blocks your buyers

File GSTR-1 late and your customers cannot claim their input credit on time. It is not just your fee, it is their working capital and your reputation.

Interest is charged on cash tax paid late

Beyond the flat late fee, unpaid tax accrues 18 percent annual interest. A two-line WhatsApp reminder is the cheapest tax planning you will ever do.

How NagMeLater handles it

1

You send the text

The button pre-fills it. Plain words, no format to learn, no reminder app to install.

2

It understands the schedule

Date, time and recurrence are parsed from your message and confirmed instantly.

3

The nag arrives on time

Right inside WhatsApp, where you will actually see it. Reply done, snooze it, or edit it any time.

Questions people ask

I file quarterly under QRMP. Does this still work?

Yes. Edit the message before sending: "Remind me on the 10th of January, April, July and October to file GSTR-1" or set it as "every 3 months". The bot handles both.

Can my CA get the reminder instead of me?

You can create a group and nag teammates directly: "remind @CA on the 18th to file GSTR-3B". Both of you stay in the loop.

What about annual returns like GSTR-9?

Set a one-off: "Remind me on 15 December to start GSTR-9 preparation". Yearly recurrence works too if you want it every year.

Why WhatsApp instead of the GST portal emails?

Portal emails land in a folder you never open. WhatsApp lands in your pocket with a buzz. You already know which one you will actually see.

Do I need to download a GST due date reminder app?

No download needed. NagMeLater turns WhatsApp into your GST due date reminder app: one message sets the schedule, and the nag arrives in the same chat. Nothing new on your home screen, nothing to keep updated, nothing extra to open.

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Set it in the next ten seconds.

The button opens WhatsApp with "Remind me on the 8th of every month at 10am to prepare GSTR-1 filing data" already typed. Send it, and it is handled.