Quarterly BAS Deadline Reminders: How to Automate Client Follow-Ups

Quarterly BAS is a system, not a sprint. If you're writing reminder emails by hand four times a year, you're paying yourself $30 an hour to do work that should cost zero. Below is the exact automation we recommend for solo Australian bookkeepers and BAS agents.

The ATO deadlines you're working backwards from

• Q1 (Jul–Sep): lodged by 28 October
• Q2 (Oct–Dec): lodged by 28 February
• Q3 (Jan–Mar): lodged by 28 April
• Q4 (Apr–Jun): lodged by 28 July

Registered BAS agents get extensions on some of these. Use them — they're built into the system precisely so agents can chase clients without panic.

The five-message cadence that works

1. T-30 days: heads-up email. 'Your Q[X] BAS is due [date]. I'll send the document request next week.'
2. T-21 days: formal request with full checklist and single upload link, deadline T-10.
3. T-14 days: friendly nudge to clients who haven't uploaded anything.
4. T-7 days: specific reminder naming the missing items.
5. T-3 days: SMS or call for anyone still silent.

Send each message from the same email thread when you can — it gives clients a single place to find everything.

What to automate, what to keep manual

Automate the first four messages. They're identical across quarters and clients — only the dates change. Keep the T-3 day touchpoint human. A phone call from you to a ghosting client is worth ten automated emails.

How to set it up without paying for a CRM you don't need

You have three sensible options:

1. Purpose-built document chasing tools like DocChase, which run the cadence automatically and centralise uploads.
2. Practice management software you already pay for (Karbon, FYI, Xero Practice Manager) — turn on scheduled tasks for each client.
3. A free option: Google Calendar reminders + Gmail templates + a shared upload folder. Less polished, but it works.

Whatever you pick, the rule is the same: every message in the cadence must exist as a scheduled action the moment the BAS quarter opens. If you're writing it on the day you need it, you've already lost.

The wording that survives automation

"Hi [Name], your Q[X] BAS is due on [ATO date] and I need everything from you by [your deadline, 10 days earlier]. Upload here in one go: [link]. If anything is missing or you're unsure, send it anyway — easier for both of us than a back-and-forth."

Notice what's missing: no apology, no 'just following up', no 'sorry to chase'. Steady, predictable, calm. Clients respond to that — and they don't even notice it's automated.

The compounding payoff

Solo BAS agents we work with save 6–10 hours per quarter once this is running. That's 24–40 hours a year — a working week — that goes back into client work, higher-margin advisory, or actually taking a holiday in January.

Choosing the right tool for your practice size

1–30 clients: free stack

Google Calendar reminders, Gmail templates, and a shared Google Drive folder per client. Costs nothing and works fine at this volume. The friction kicks in around 30 clients — that's when message scheduling and centralised uploads start paying for themselves.

30–100 clients: purpose-built

DocChase or a similar document-chasing tool wins here. Cadence runs automatically, every client has one upload link, and you stop forgetting which message you sent to whom. Annual cost is usually less than a single recovered day of chase work.

100+ clients: integrated practice management

Karbon, FYI, or Xero Practice Manager are worth the heavier lift. Workflow automation, capacity planning, and reporting matter more than message scheduling at this scale.

Common automation mistakes

• Setting reminders so frequent they read as nagging. Four touchpoints is the ceiling.
• Forgetting to pause the cadence when a client uploads — automated 'where are your docs?' messages after delivery destroy trust.
• Using a different upload link in every message. One link per quarter, always.
• Sending reminders outside business hours. Schedule them for 9am client local time.

How to introduce automation to existing clients

Tell them once, in the next BAS request, that you're moving to a more predictable reminder system. Frame it as a service improvement, not a process change. Nearly every client will accept it without comment — the few who push back are usually the ones whose chase costs you the most.

Measuring whether it's working

1. Average days from request to complete upload — target under 8.
2. Number of manual reminder messages sent per quarter — target zero.
3. Hours spent on chase work per quarter — target under 3.