Most accounting firms put enormous effort into winning a new client and almost none into the four weeks that follow. That is the wrong way round. Industry data from PracticeWeb, Bain and the AICPA all point to the same conclusion: clients decide whether they are going to stay with a firm in the first 30 to 60 days. If onboarding feels chaotic, slow or impersonal, churn risk in year two roughly doubles even if the actual work is competent.
This guide gives you a concrete, day-by-day script for the first 30 days with a new client. It is built for UK and UAE practices working with limited companies, sole traders and SME directors. Steal it, adapt it, codify it as a workflow in your practice management system.
Why the first 30 days matter more than the next 300
Onboarding is when a client forms their reference experience of your firm. Every later interaction is judged against this baseline. A client who feels organised, informed and respected in week one will tolerate the occasional missed email in month nine. A client who had to chase you three times for portal access will quietly compare quotes within twelve months.
Retention economics make this brutal. Acquiring a new client typically costs 5 to 8 times the gross margin of a single year of fees. If your average client pays £4,800 and stays 3.2 years, losing them in year two instead of year five turns a £15,000 lifetime client into a £9,600 loss-leader. Onboarding is therefore not an administrative chore - it is the highest-return investment in the entire client journey.
Day 0 to Day 2: welcome, expectations, access
The moment a proposal is signed, send a welcome pack within the same business day. Not a generic auto-responder - a real welcome with three things: a named partner and a named manager, a one-page summary of what happens next, and credentials to the client portal. Do not wait until Monday because the engagement letter was signed on Friday.
- Personalised welcome email from the named partner (not a template signed by "the team")
- Branded portal invitation with single-sign-on or magic link - no password reset frustration on day one
- Calendar invite for the kick-off call within 5 working days
- Document request list with deadlines, not a vague "send us your records when you can"
Day 3 to Day 7: kick-off call and document collection
The kick-off call should be 30 to 45 minutes, video where possible, and led by the manager who will actually do the work - not a salesperson handing off to a stranger. Cover three things: confirm scope and timetable, walk through the portal live so the client sees where to upload and message, and set the rhythm of communication (monthly call, quarterly review, year-end push).
By the end of day seven, you should have at least 60 percent of the documents you need. If not, the issue is almost never the client being uncooperative - it is that your request list was vague or your portal is confusing. Fix the system, not the client.
Day 8 to Day 14: first quick win
Find something useful you can deliver inside the first two weeks that the client did not pay for. A cashflow snapshot, a Companies House filing reminder calendar, a sense-check of their VAT scheme, a quick AML status confirmation. It does not need to be expensive - it needs to feel proactive.
This is also the week to introduce your encrypted messaging channel and gently retire email. The script is simple: "All client documents and questions go through the portal - it keeps your data secure and it means nothing gets lost in someone's inbox during holiday." Clients respect firms that take security seriously.
Day 15 to Day 21: introduce the wider team
Single-point-of-contact is a trap. If your manager goes on leave or leaves the firm, a client who only knows one face feels abandoned. In week three, introduce the bookkeeper, the AML officer, the tax specialist - even briefly - through the portal or a short video. Clients who feel they belong to a firm, not a person, are dramatically less likely to follow a departing employee out the door.
This is also the right week to schedule the 90-day review and put it in the diary now. Booking ahead signals that you take the relationship seriously and prevents the meeting from quietly slipping into never.
Day 22 to Day 30: first deliverable and feedback loop
By day 30, the client should have received something tangible: management accounts, a tax planning note, a fully-populated compliance record, an opening balance reconciliation. Whatever the engagement is for, deliver the first piece of work inside the first calendar month.
On day 30, send a short three-question survey. Not a 25-question NPS monster - three questions: How clear was onboarding? How responsive have we been? Anything we should change? Read every response, and reply personally to anything below a 9. The clients who give you a 7 in month one are the ones you save before they leave in year two.
What to track in your practice management system
A script is only useful if it is enforced. Code the 30-day journey as a workflow with named steps, owners and SLAs. Accupe sits in the background as the practice-management layer that tells your team which onboarding milestones are due, which clients are missing documents, which kick-off calls have not been booked, and who owns each step. The client portal, encrypted messaging and e-signatures all happen inside the same branded environment, so the client never sees the seams between your departments.
- Welcome email sent - owner, timestamp, evidence
- Portal credentials issued and first login confirmed
- Kick-off call held - meeting notes attached to client record
- Document checklist 60 percent complete by day 7
- Quick win delivered by day 14
- First deliverable issued by day 30
- Day 30 feedback survey sent and responses logged
Common failure modes to design out
Three patterns kill onboarding more than anything else. Hand-offs without context, where the salesperson disappears and the delivery team starts from scratch. Document chasing by personal email, which is invisible to managers and impossible to audit. And silence - three weeks where the client hears nothing because everyone is busy. The script above eliminates all three because every touchpoint has a named owner, lives in the portal and is tracked centrally.
Closing
A great first 30 days is not about heroics. It is about doing seven or eight ordinary things on time, every time, for every new client. Codify the script, automate the reminders, and measure completion the same way you measure billable hours. Do that and your year-two retention will quietly climb 10 to 15 percentage points without anyone needing to "work on retention."