Phone Systems for Accountants: Getting Through Tax-Time Call Peaks

Office phone systems: three staff hold handsets at a wall

The short answer

Phone systems for accountants need to be set up for the tax-time call peak, not the quiet months either side of it. A call queue, a callback option, overflow to a second group and a clear queue message absorb most of the flood, and the same client confidentiality rules that apply to email apply to voicemail and call recordings too.

An accounting firm’s phones are not busy all year. They are quiet for months and then flooded, and phone systems for accountants should be set up for the flood, not the average.
The flood has a date on it. Individuals lodging their own return face the usual 31 October deadline, and 31 October is also the ATO’s final date for a registered agent to add a new client to their lodgment program. The last fortnight of October is when “can you take me on?” calls peak.
Four settings do most of the work: a call queue instead of a busy signal, a callback option, overflow to a second group, and a message that answers the question most callers are ringing to ask.
Seasonal and part-time staff should be able to log in to the system for the season and log out after it, without new handsets or a technician.
Confidentiality applies to calls too. Voicemail, recordings and call notes hold client information, and the TPB Code limits what can be disclosed.

Every accounting practice knows the pattern. The phones are manageable for most of the year, then from July onwards they climb, and by late October the front desk is fielding new-client enquiries, “where is my return” calls and document questions all at once. Phone systems for accountants are usually chosen for the quiet months and then fail in the busy ones.

This post is about setting a practice’s phones up for the peak: what the peak actually looks like, which settings absorb it, and how to handle client confidentiality on calls, voicemail and recordings.

Why do accounting firms get a call peak in October?

Because 31 October is a hard date for two groups of callers at once. Individuals who lodge their own return face the usual 31 October deadline, and anyone who wants a tax agent to lodge for them needs to be on that agent’s books before it.

The ATO’s schedule for registered agents lists 31 October 2026 as the final date to add new clients to a client list so their 2026 return is covered by the lodgment program. The ATO also notes that most registered agents have a special lodgment program and can lodge for clients after the usual 31 October deadline, which is exactly why a late self-lodger rings an accountant in the last fortnight of October.

So the peak is predictable. It has a date, it lands every year, and it is made of calls a practice genuinely wants: new clients, most of them ready to engage.

What do phone systems for accountants need to handle?

Short, intense peaks of inbound calls, most of them from people who are not yet clients. The system’s job in those weeks is to make sure no enquiry is lost while the team is already on the phone.

A typical tax-season week mixes four kinds of call:

Call type What the caller wants What usually goes wrong
New client enquiry “Can you do my return before the deadline?” Busy signal, caller rings the next firm
Existing client status “Has my return been lodged?” Ties up a senior person for a two-minute answer
Document questions “What do you need from me?” Repeated calls about the same checklist
Business clients BAS, payroll, year-end work Crowded out by the individual rush

The first row is the one worth protecting. An existing client will usually wait or ring back. A new enquiry facing a deadline often will not.

The four settings that absorb a tax-time peak

None of these needs new hardware on a modern hosted system. They are call-flow settings, and they can be switched on for the season and relaxed afterwards.

01A queue, not a busy signal.When every line is taken, a caller should hear that they are in a queue, not an engaged tone. A queue with a position announcement (“you are third in line”) gives the caller a reason to hold, where an engaged tone gives them a reason to ring the next firm.
02A callback option.Let callers in the queue press a key to be called back rather than wait. It protects the enquiry and spreads the work across the day instead of forcing it into the peak minute.
03Overflow to a second group.If reception is saturated, calls should roll to a second group, such as juniors or an admin team, before they reach voicemail. Setting up hunt groups is the simplest version of this.
04A message that answers the common question.If half the calls in late October are “can you still take me on”, a short queue message with the practice’s current position (taking new clients or not, and how to book) answers it before anyone picks up.

If call volumes are big enough that queues, callbacks and reporting are standard rather than occasional, the practice may be closer to a contact centre set-up than a standard phone system, at least for the season.

Can seasonal staff use the phone system without new hardware?

Yes, on a hosted system. A seasonal or part-time staff member can be added as a user, answer calls on a softphone or the mobile app, and be removed when the season ends, with no handset delivered and nothing to cable.

That flexibility matters for a practice, because the extra hands in September and October are often part-time, remote or both. What to check:

Can users be added and removed from an admin screen, or does every change need a ticket to the provider?
Can a seasonal user join the queue or hunt group without a desk phone?
Does their access stop cleanly when they leave, including voicemail and call history?

The last one connects to the next section, because client information sits in more places on a phone system than most practices realise.

How does client confidentiality apply to phone calls?

The same way it applies to email and files. Under the Tax Practitioners Board’s Code of Professional Conduct, a practitioner must not disclose information about a client’s affairs to a third party unless they have the client’s permission or a legal duty to do so. The TPB’s guidance on client confidentiality sets out what that covers.

On a phone system, client information shows up in four places:

Voicemail. A message saying “it’s about my tax debt” is client information. Know who can access each mailbox.
Call recordings, if the practice records calls. Whether recording is permitted at all is a separate legal question, covered in our post on call recording law.
Call notes and CRM entries linked to caller ID.
Shared devices and accounts. A generic reception login that seasonal staff share makes it impossible to say who heard what.

The practical rule: every person who can hear client calls or messages should have their own login, and that access should end the day they leave.

This is general information, not legal advice. Your professional body or the TPB is the authority on your obligations.

After hours in tax season

Tax-season callers ring at night and on weekends, because that is when they finally sit down with their paperwork. A good after-hours flow for a practice does three things:

01States the practice’s position clearly(taking new clients or not, and the fastest way to book).
02Points to self-serve informationsuch as the document checklist, so the question is answered without a callback.
03Captures the enquiryby voicemail, delivered by email to the person who will actually return it.

Sending voicemail to email means a Saturday enquiry is waiting in the right inbox on Monday morning, rather than in a mailbox nobody checks until Tuesday.

Reviewing the season once it is over

The first week of November is the best time to plan next year’s tax season, because the pain is still fresh and the data is still there. Pull the call reports for July to October and look at three things:

When the peaks landed. Which weeks, which days, which hours. Next year’s roster should be built on this, not on memory.
How many calls were abandoned or missed, and at what time of day.
How many callers used the callback option, which tells you whether it is worth keeping or expanding.

Then switch the seasonal settings off, remove the seasonal users, and write down what you changed, so next July starts from a tested configuration instead of a blank page.

Are phone systems for accountants worth upgrading before tax time?

Only if the upgrade is finished before the peak starts. Changing phone systems in the middle of October is the wrong time; changing in autumn, with the new call flow tested before July, is the right one.

The test of whether an upgrade is worth it is last season’s experience. If callers told you they could not get through, if the front desk spent October apologising, or if nobody could say how many enquiries were missed, the current setup is costing the practice clients at the one time of year they arrive in numbers.

NexGen has been setting up business phone systems for 17 years, with 7,500+ businesses served and Australian-based support, and standard onboarding is 7 business days, so a system chosen in autumn is comfortably live before the season.

Ready for tax time to run smoothly?

See how a hosted phone system can be set up for an accounting practice, with call queues, callbacks and seasonal users built in.