Accountants on WhatsApp: keep records coming in and every piece of advice with a qualified person
Email is where an accountancy practice sends engagement letters and finished accounts. WhatsApp is where sole traders and small business owners actually talk to their accountant. They send photos of receipts from the van, ask whether a new laptop counts as an expense, check when their tax return is due and want to know if you have everything you need. In January the messages double. An AI agent can answer the admin questions from a practice note, tell clients which records are still missing, log what they send and book calls with the accountant. It never gives tax advice, never comments on a client's figures and never asks for passwords or bank logins in the chat. This playbook shows where that line sits and how to set it up.
Why clients message their accountant on WhatsApp
Small business clients live on their phones. When they get a receipt, they take a photo. When they get a letter from HMRC, they take a photo of that too. Typing a short question on WhatsApp is easier than writing an email, and they expect a quick, informal answer.
For the practice, that is both useful and tiring. Records arrive faster, but they arrive in a stream of photos and half-questions that someone has to sort. An AI agent can keep that stream tidy: thank the client, note what arrived, say what is still missing and pass the real questions to the right person.
The line: admin from the agent, advice from an accountant
The agent can answer questions about the practice: deadlines in general terms, what records you need for each kind of job, your fees from the written list, how to send documents and when the next call slot is. It does not answer "can I claim this?", "how much tax will I pay?" or "should I go limited?". Those are advice, and advice depends on the client's whole situation.
Give it one sentence for every advice question, such as "That's a great question for Priya, who'll look at it with your figures. I've passed it to her." Tell it never to comment on a client's numbers, never to estimate a tax bill and never to reply to an HMRC letter on the client's behalf. Those go to an accountant.
Ask the agent never to request passwords, bank logins, Government Gateway details or full bank card numbers in the chat. If a client sends sensitive identity details unprompted, the agent should say that the practice will contact them about a secure way to share those and hand the chat over.
What customers ask on WhatsApp
- When's my tax return due?
- Have you got everything you need from me for this year?
- Can I claim my new laptop as an expense?
- I've had a letter from HMRC, what does it mean?
- How much do you charge for a self assessment return?
- Can we have a quick call this week?
- [photo of 12 receipts] Is this enough?
An example conversation
This illustration shows a sole trader sending records in January. Names, dates and details are examples.
| Who | Message |
|---|---|
| Lee | Hi, sending my fuel receipts for the year. What else do you need? Bit worried about the deadline. |
| AI agent | Hi Lee, I'm the practice's AI agent and Priya reads every chat. Thank you, I've logged 14 fuel receipts. For your return, we still need your bank statements from April to March and your invoices for the year. The online deadline for self assessment is 31 January, and Priya likes to have everything by the 15th. |
| Lee | OK will send statements tonight. Can I claim my work boots and phone bill too? |
| AI agent | That's one for Priya, who'll look at it with your figures. I've passed it to her. Would you like a 15-minute call? She has Thursday at 12:30 or Friday at 9am. |
| Lee | Friday 9. |
| Priya | Hi Lee, Priya here. Booked for Friday. Send the statements when you can and I'll go through expenses with you then. |
What the agent answers
- General deadline dates and the practice's own cut-off for receiving records.
- Which records you need for each kind of job, from your checklist.
- Logging what a client sends and saying what is still missing.
- Your fees, from the written fee list, given as you word them.
- Booking calls and meetings into the slots you set.
- How to share documents securely, such as your client portal link.
What it always hands to you
- Every question about tax, expenses, VAT or business structure.
- HMRC and Companies House letters and any penalty notices.
- Anything about a client's figures, bill or refund.
- Fee disputes, complaints and new engagements that need a proposal.
- Sensitive identity or banking details sent in the chat.
- Anything that sounds like a client in money trouble or under stress.
Use a checklist, not memory, for missing records
The most useful thing the agent does is tell a client exactly what is still missing. That only works if it has a checklist for each client or each kind of job, such as self assessment for a sole trader, a landlord's return or a small company's year end. Keep the checklist in the note, and ask the agent to read back through the chat before it says "we have everything". Spaces keeps the conversation history, so the agent can see what arrived and when.
The WhatsApp limits that matter here
| Limit | Spaces limit per WhatsApp account |
|---|---|
| Messages | Up to 400 a day |
| Gap between messages | At least 10 seconds |
| New conversations you start | 5 an hour, 10 a day |
A reply to someone who wrote in is never held back by the daily limits, so customers get answers from the first day. Only messages that are not replies to someone who wrote in count toward the messages a day, which rise each week of the warm-up.
Set it up in an afternoon
- Write a practice note: services and fees, deadlines you mention, your own cut-off dates, record checklists for each kind of job, call slots, your secure document link and what always goes to an accountant. There is an example below.
- Connect the practice's WhatsApp number in Spaces. You scan a QR code with the phone that has the number, the same way you would link WhatsApp on a computer. Use a practice number, not an accountant's personal phone.
- Connect your AI agent using the steps on our agents page. Chat apps such as Claude or ChatGPT reply when you ask them in a chat, so for replies as messages arrive use an always-on agent such as Claude Code, Codex, OpenClaw or Hermes. Give it the practice note. Spaces does not connect to practice management or bookkeeping software, but your agent can reach one through its own tools if you set that up.
- Tag each chat with the client's accountant, so handed-over questions go to the right person. Inbox tags and owners work for every workspace.
- Ask your AI agent to hold replies as drafts for the first week, and nothing goes out until you approve it. Once the answers read the way you would write them, switch drafts off for the everyday questions.
- Decide when the agent answers. Many practices let it log records in the evenings, when clients send them, and leave everything else until office hours. Tell it in its notes, or pause sending.
- In the run-up to a deadline, add your cut-off dates and a calm line about late records to the note, so the agent answers the same way every time.
A sample practice note
Keep it short, and keep the checklists clear. Here is the shape of one, with example details.
PRACTICE: Brightside Accounts, Priya Shah and Tom Reid.
OFFICE: Mon to Fri 9am to 5pm.
SERVICES AND FEES (say "from", final fee in the engagement letter):
- Sole trader self assessment: from £300
- Landlord return: from £250
- Small company year end: from £950
Bookkeeping: by quote. New clients: pass to Priya.
DEADLINES (general): online self assessment 31 January.
OUR CUT-OFF: records by 15 January for January returns.
CHECKLIST, SOLE TRADER: bank statements Apr to Mar, sales invoices,
expense receipts, mileage log if they drive for work.
DOCUMENTS: photos are fine for receipts. Bank statements and anything
with ID numbers: client portal (link in note), never in the chat.
CALLS: 15 minutes. Priya Thu 12:30, Fri 9am. Tom Tue 2pm.
NEVER: give tax advice, say what can be claimed, estimate a bill,
comment on figures, reply to HMRC letters, ask for passwords or logins.
SAY: "That's one for Priya, who'll look at it with your figures."January: when everyone messages at once
The weeks before the self assessment deadline are when an agent earns its keep. Clients who have been quiet all year suddenly send everything, often late at night and often worried. A calm, consistent reply that logs what arrived, lists what is missing and gives your cut-off date takes the panic out of the conversation.
Give the agent your wording for late records, such as "We'll do our best for anything that arrives after the 15th, and Priya will let you know if we need to talk about timing." Tell it never to promise a return will be filed by a certain date. That promise is yours to make.
You can also send a reminder to clients who agreed to hear from you, one at a time, written for each client, a few weeks before your cut-off. A scheduled message works well for that. Avoid sending the same reminder to every contact, because Spaces refuses the same cold text sent to many people.
A second example: an HMRC letter
These messages often come with worry attached. Names and details are examples.
| Who | Message |
|---|---|
| Amira | [photo of a letter] Just got this from HMRC, says I owe a penalty?? I thought you'd filed it. |
| AI agent | Hi Amira, thank you for sending this straight away. I've passed it to Tom, your accountant, and marked it as urgent. He'll look at it and reply here today. Please don't pay anything or call HMRC until he's been in touch. |
| Tom | Hi Amira, Tom here. I can see what's happened, it's a timing issue we can sort. I'll call you at 2pm to explain. |
"Please don't pay anything until he's been in touch" is wording the practice agreed in advance. The agent did not read the letter's meaning or comment on whether the penalty was right. It handed over with urgency.
Common mistakes accountancy practices make
- Letting the agent answer "can I claim this?" because the answer seems obvious.
- Accepting bank statements and ID documents in the chat instead of a secure portal.
- Saying "we have everything" without checking the chat against the checklist.
- Promising a return will be filed by a date before an accountant has seen the records.
- Using an accountant's personal phone number, so clients follow them if they leave.
Who you message
In short
For a small accountancy or bookkeeping practice, an AI agent on WhatsApp logs the records clients send, says what is still missing, answers deadline and fee questions and books calls. Tax advice, figures, HMRC letters and sensitive details always go to an accountant.
Write the checklists, set your cut-off dates and connect a practice number. Spaces paces every message and keeps the number inside safe limits, but no tool can promise WhatsApp will never restrict an account, so keep the agent to clients who message you and clients who asked to hear from you.
Pricing
FAQ
Can the agent give tax advice?
No. Every question about tax, expenses, VAT or business structure goes to an accountant. The agent says the accountant will look at it with the client's figures and passes it on.
Can it tell clients what records are missing?
Yes, if you give it a checklist for each kind of job. It reads back through the chat to see what arrived and lists what is still needed.
Is it safe for clients to send documents on WhatsApp?
Photos of receipts are fine for many practices. For bank statements and anything with identity numbers, send clients to your secure portal. Tell the agent never to ask for passwords or logins in the chat.
What does it do with HMRC letters?
It thanks the client, hands the chat to their accountant as urgent and uses your agreed wording, such as asking them not to pay or call until the accountant has been in touch. It never explains what the letter means.
Can it send deadline reminders?
Yes, to clients who agreed to hear from you, one at a time and written for each client. A scheduled message works well. Avoid the same reminder sent to everyone.
Can it quote our fees?
It can give "from" prices from your written fee list, in your words. The final fee belongs in your engagement letter, and new clients go to a person.
Does it work with our practice software?
Spaces does not connect to practice management or bookkeeping software. If your AI agent can reach that software through its own tools, it can read deadlines or client lists from there.
Can each client go to the right accountant?
Yes. Tag each chat with the client's accountant, and handed-over questions go to that person. Tags and owners work for every workspace.