Industry Copilot · 8 min read
Five Admin Jobs an Agent Can Take Off a 30-Person Accountancy Firm
By James Wilkinson 12 September 2026
Post, engagement letters, WIP reporting and meeting write-ups: five admin jobs we have built or scoped agents for, what stays with a person and what each costs.
TL;DR
- Five admin jobs, each one built or scoped for a practice: incoming post, letters of engagement, letters of representation, WIP reporting and meeting write-ups. Not twenty things Copilot could theoretically do.
- Not all five are agents. Post is mostly a pipeline with an agent on the front. Engagement letters are a form and flows with a drafting step. Saying which is which is the point.
- Every one of them has a form or a trigger at the front, a draft or a decision in the middle and a person at the end. None replaces the manager or the partner. All of them write down what they did.
- Which first: WIP reporting if the data is accessible, engagement letters if the firm is growing, post if someone spends an hour a day on it, meeting capture last because it touches the CRM.
- Cost bands: WIP reporting at the low end of a route one build or an ideal route two project, letters at the low end of £5,000 to £15,000, a post pipeline at £10,000 to £15,000 plus £10 to £200 a month in Azure.
Most lists of what AI can do for accountants run to twenty items, most of them things Copilot could theoretically do if someone got round to it. This is a shorter list. Five admin jobs we have built or scoped agents for in practices, what each one looks like on a working day, what stays with a person, the shape the build takes and roughly what it costs.
One honesty up front. Not all five are agents. Two of them are mostly pipelines and flows with an agent on the front, and calling them agents would be a stretch. The rule we build to is that agents talk and flows do, and our Copilot Studio vs Power Automate post draws that line properly. Where a job below is a flow, it says so.
1. Incoming post
Today. A daily stack of scanned letters: HMRC correspondence, VAT notices, Companies House mail, bank letters. Each one is opened, read, attributed to a client, renamed and filed by a person. The job queues behind busier work, and a penalty notice can sit unfiled while its deadline runs.
What the agent does. Reads each scan, splits a bundle into individual letters and works out the sender and the subject. Matches the letter against the live client list drawn from the CRM, so the match runs on current records rather than a spreadsheet someone exported in March. Files it into the document management system under the client code with a fallback copy in SharePoint, writes an entry in an audit register and posts the day’s post to a Teams channel. About two minutes from scan to filed.
What stays with a person. Anything the system is not confident about. Letters naming several group companies, penalty notices and unknown senders go to a review queue with a note of what the system thought and why it stopped. People review that short list instead of sorting the stack. At a practice with more than 1,500 live clients, that gave up to two hours a day back.
Shape and cost. This one is mostly a pipeline: Azure AI Document Intelligence to read the pages, an Azure OpenAI step to understand them, flows to file, log and post. The agent sits on the front for questions and uploads. Build band £10,000 to £15,000, running cost £10 to £200 a month in Azure consumption depending on page volume. The post room case study tells the firm’s side, and one letter, two minutes opens the box and follows a VAT notice through each stage.
2. Letters of engagement
Today. Thirty to sixty minutes per letter. Someone gathers the client details, picks the services, edits the template, sends it to a partner, chases the signature and updates the client record by hand. Last year’s fee has a habit of surviving into this year’s letter.
What the agent does. A form captures what varies: client, services, fee basis, signatories. The letter is generated in the background from the firm’s own template and routed for approval. A person reviews and sends. The next phase, in progress at a practice we work with, produces three documents from one request, the engagement letter, the risk assessment and the fact find, runs them through an approval chain of business support, partner and KYC, and only writes the services to the client record once the signed date is populated, with the PDF filed and the document reference stored on the record.
What stays with a person. The decision on terms and the approval. The agent never sends unreviewed, and the approval step is the control, not a formality.
Shape and cost. A form, flows and a drafting step. Classic harness, so licensed users draw no credits within fair use. The letter on its own sits at the low end of the typical £5,000 to £15,000 build range. The three-document version sits higher because more systems are touched. The engagement letter automation example shows the form-and-flow version, and from SOP to agent walks through what Discover does to the written procedure before any of it is built.
3. Letters of representation
Same job, different template, same chasing at audit close. Same pattern too: form in, drafted letter out, review before sending.
The reason this gets its own number is what it says about the second build. Once the engagement letter pattern exists, the form, the routing, the approval and the filing are all already there. The second letter type is a template and a handful of form fields, a fraction of the first build. This is the one solution, many templates idea, and it is why the second agent in a practice costs so much less than the first. When a firm asks what else the pattern covers, the answer is any document that follows a template and depends on a small number of variables.
4. WIP reporting
Today. A manager pulls WIP from the practice management system, filters it, works out which jobs are over budget or unbilled and writes a note. Up to 30 minutes, weekly or monthly, and the first thing dropped when the week gets busy.
What the agent does. A Copilot Studio agent grounded on the WIP data. The manager asks it in Teams: which jobs are over budget this month, what is unbilled over 60 days, which client has moved most since last time. Five minutes, and the question can be asked on a Tuesday afternoon without building a report.
What stays with a person. Every decision. The agent reports what the data says. The manager decides what to bill and what to write off, and the partner still signs the write-off.
Shape and cost. The simplest build of the five, built simply in Copilot Studio. Classic harness, knowledge-grounded, no Azure. If the WIP data is already in SharePoint, Dataverse or an exportable report, this is a first-agent candidate at the low end of route one, or an ideal route two project for a firm that wants its own people to learn on something real. One caution: the agent is only as good as the data. Stale rates and unallocated time show up in its answers, and the same clean-workbook discipline that makes Copilot in Excel useful applies here.
5. Meeting write-ups and client record updates
Today. After a client meeting the manager writes up the notes, updates the CRM, creates the follow-up tasks and drafts the summary email. The notes are often the last thing done that day and the CRM is never updated at all.
What the agent does. Takes the Teams transcript and produces the structured write-up, the CRM update and the draft follow-up email, for the manager to check and send.
What stays with a person. The check, the send and anything advisory. A transcript captures what was said, not what the manager decided on the drive back.
Shape and cost. This is the one most firms ask for next, and it is a build we have scoped for professional services firms, not one that is live anywhere. The shape is a Teams transcript in, a drafting agent and flows to the CRM. The catch is the connector tier. Most practice CRMs are premium connectors or need a custom connector, which means Power Automate Premium at $15 per user per month on an annual plan at September 2026 list, about £11, for every user who runs the flow. That changes the licence sums, and it is the fourth check in our three numbers to check before an agent goes live.
What the five have in common
Every one of them has a form or a trigger at the front, a draft or a decision in the middle and a person at the end. None of them replaces the manager or the partner. They take the typing and the sorting, and the time comes back to the person who used to do it.
Every one of them also writes down what it did. The post pipeline keeps an audit register. The letters carry a record of who generated what, against which template, when. The WIP agent’s conversations are logged. For a regulated firm that is not a nice-to-have. It is the feature compliance asks about first, and it is easier to build in from the start than to bolt on afterwards.
Which one first
A straight answer rather than “it depends”.
WIP reporting, if the data is accessible. It is cheap, it is fast to prove and every manager feels the job weekly, which is what makes an agent stick.
Engagement letters, if the firm is growing. The pattern reuses for representation letters and every other templated document, so the second and third builds get cheaper.
Post, if the volume is high enough that someone spends an hour a day on it. Below that, the pipeline is more build than the job deserves.
Meeting capture last, because it touches the CRM and the connector question has to be answered before the price can be fixed.
The two earlier posts on this site about Copilot in practices, Microsoft Copilot for accountants and how accountancy firms actually use Copilot in-house, cover the prompting habits that come before any of this. The five jobs here are what happens when a task repeats often enough that a prompt stops being enough. If you are unsure whether a job needs Copilot Studio at all or would work as a declarative agent in the agent builder, Copilot Agent Builder vs Copilot Studio settles it in one question. The same five, with law firm equivalents, are in where an agent fits in a 20-person law firm.
The next step
Your practice has its own version of these five. The services are named differently, the CRM is different, the post arrives through a different scanner. Discover maps your version of each one, works out which is worth building first and, with Design, puts a fixed price on it. £1,500, credited back in full once follow-on spend passes £3,500 before VAT within 90 days of the roadmap. From there the build runs by whichever route was fixed at Design, and the Automate page sets out what both routes deliver. For a full year of one firm’s numbers, build fee, licences, credits and support, see what a first agent costs a 30-person firm in year one. The AI agents for accountancy firms page carries the published prices alongside the named jobs.
Sources checked
Last checked: 12 September 2026. Microsoft prices are US dollar list at September 2026 and subject to change. Sterling figures are approximate.
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