Client onboarding at an accounting firm: The 6-Step method

You’ve secured a new client: you think the hard part is over. In reality, the relationship is just beginning, and it’s in the weeks following the signing that you either win or lose the client. A client who waits three weeks to hear back, who receives four emails from four different people asking for the same documents, or who doesn’t know when their first deliverable will arrive, is already starting to have doubts. And a client who has doubts from the start is a client who will start shopping around again at the first sign of frustration.

Onboarding is the process that turns a signature into a working relationship: defining the engagement in writing, meeting with the client, collecting documents, granting access, delivering initial value quickly, and then ensuring everything is running smoothly. This guide details a 6-step method tailored for Canadian firms, from solo practitioners to firms with twenty employees, complete with a sample timeline, a checklist of required documents, and key metrics to track. The stakes are directly financial: every client retained for one additional year represents a median value of approximately $3,000 in recurring annual fees (Bankeo Fee Barometer 2024-2026(data based on more than 15,000 requests received since 2023).

Why the first 90 days determine the entire relationship

The period immediately following the signing of the contract is when the client is both most attentive and most vulnerable. They have just made a decision, sometimes after comparing several firms, and are subconsciously seeking confirmation that they made the right choice. Three factors work in your favour if you leverage them, and against you if you ignore them:

• The Power of First Impressions. The perceived quality of your firm is established during the initial interactions. A structured onboarding process, with a clear timeline and a designated point of contact, conveys an image of professionalism that will reflect positively on the entire engagement. An improvised onboarding process creates the opposite impression, even if your technical work is excellent.
• Data quality downstream. A sloppy onboarding process means missing documents, a poorly set up chart of accounts, and inaccurate opening balances. You’ll pay for these shortcuts for years to come, in the form of non-billable hours spent on corrections and shared frustration.
• Retention. The cost of acquiring a client only pays off over time: a recurring account retained for three years is worth several times its initial invoice. However, the decision to stay or leave is made early on. The levers for long-term client retention are detailed in Building Client Loyalty at an Accounting Firm, but it all starts here.

There’s also a capacity issue: a repeatable onboarding process reduces the time spent on each new client, which increases the number of accounts your team can handle without hiring additional staff. It’s the same reasoning as for Time Wasted Looking for Clients : Unstructured hours are the most expensive for the firm.

The 6-step method, from signing to day 90

Here is the complete process. Steps 1 through 5 take about two weeks to complete, followed by three months of follow-up.

1. Step 1: The engagement letter must be signed before any work begins. CPA Canada and provincial regulatory bodies recommend documenting in writing the scope of the engagement, each party’s responsibilities, fees, and termination terms. Beyond compliance, the engagement letter is your best onboarding tool: it forces a conversation about what is and isn’t included before the first misunderstanding arises, rather than after. No work is performed until it is signed.
2. Step 2: The initial meeting, within 5 business days. Thirty to sixty minutes, in person or via video conference, with an agenda sent in advance: introduction of the assigned contact person, timeline for deliverables, communication channels (who to contact, for what, and within what response time), and an overview of the client’s business. This is also the time to note any specific details: seasonality, growth plans, and issues experienced with the previous firm. This meeting builds on the work begun during the First call with the prospect : Now is the time to follow through on what you promised to do to close the deal.
3. Step 3: Collecting documents, streamlined and completed in a single round. The worst customer experience is when information is requested piecemeal. Send a complete, personalized list the day after the meeting, along with a secure portal for uploading documents (never send tax documents via regular email). A sample list is provided in the following section.
4. Step 4: Access and Data Transfer. Accountant access to the bookkeeping software; authorization to represent the client before the Canada Revenue Agency and Revenu Québec, as applicable; read-only access to bank accounts if specified in the engagement agreement. Then, the technical handover: validation of opening balances, review of the chart of accounts, and overdue reconciliations. Document what you find: the initial status of the file, recorded in writing, protects both you and the client.
5. Step 5: A quick initial deliverable, even if it’s modest. Don’t wait until the end of the fiscal year to deliver value. An up-to-date reconciliation, a simple dashboard, and a list of findings from the transferred file: a deliverable within the first 30 days fulfills your promise and gives the client a concrete reason to be happy with their choice.
6. Step 6: Check-ins at 30, 60, and 90 days. Three short, scheduled check-ins: on Day 30, confirm that how it works (documents, access, communication); on Day 60, review the initial deliverables and make any necessary adjustments; on Day 90, conduct a brief satisfaction check-in. It’s on Day 90, once the relationship is established and value has been demonstrated, that asking for a Google review or a recommendation feels most natural.

“You don’t win a client when they sign the contract, you win them in the 90 days that follow. An entrepreneur who receives a clear welcome, with a timeline and a point of contact, won’t go shopping around. But one who is left waiting without any updates will. Onboarding is retention that starts on Day 1.” Arnaud Bertrand, CEO of Bankeo

Improvised vs. Structured onboarding: What it means in practice

The difference between the two approaches isn’t apparent on the first day. It becomes evident in the number of non-billable hours, the quality of the client file, and the duration of the relationship.

Making the transition from one to the other doesn’t require expensive software: a engagement letter template, a sample agenda, a list of documents by client type, and a follow-up schedule are all you need to get started. Tools then help amplify what works, as detailed in The Technology and Productivity Guide for Accounting Firms.

List of documents: Request everything, just once

Adapt this framework to the specific engagement (bookkeeping, year-end closing, tax, payroll) and the type of entity, then create templates for each client profile:

• Identity and Structure: Articles of incorporation or registration documents, shareholder agreement (if applicable), business and tax ID numbers (GST/QST), and a record of recent resolutions.
• Accounting History: financial statements for the last two fiscal years, most recent tax returns filed, closing trial balance, access to existing accounting software, or a complete data export.
• Banking and Financing: Bank and credit card statements for the past twelve months, loan agreements and lines of credit, major lease agreements.
• Taxation and Rebates: recent notices of assessment, a statement of tax instalments, a history of tax payments and source deductions, and any ongoing correspondence with tax authorities.
• Payroll and HR: list of employees, recent pay stubs, standard contracts if applicable.
• Permissions: Forms for representation before tax authorities, authorizations to access banking and software platforms.

Two golden rules: a single, secure channel for all document submissions, and scheduled follow-ups rather than reactive ones. If a client is slow to provide documents, this is a sign that needs to be addressed early on: behaviours that complicate the relationship are better corrected on day 15 than on month 8, as explained by The Guide to Dealing with Difficult Clients.

Measuring your onboarding process to improve it

A process that isn’t measured deteriorates silently. Four metrics are all you need, tracked in a simple table:

• Time between signing and the initial meeting: Aim for 5 business days or less.
• Timeframe for collecting all required documents: The time between sending the list and receiving the final document. This is often the bottleneck; it can be reduced with clearer lists and a simpler portal.
• Time to first deliverable: Aim for less than 30 days, even for a small project.
• Internal hours per onboarding: Total time spent per account. This metric indicates how many new clients your team can handle per month, a key figure for managing Your firm’s capacity.

Onboarding is also easier when clients arrive already qualified. A vague request that is poorly defined from the start leads to a chaotic onboarding process; a request in which the need, industry, and deadline are verified in advance results in a smooth onboarding process. This is the principle of Bankeo Pro : The business owner describes their situation; the request is verified and then matched with firms whose profiles are a good fit, often within 48 hours. You begin the relationship with a clear understanding of the context, and the cost of the service is a fixed fee per completed case, never a percentage of your fees. In Canada, hundreds of cases have been successfully closed by firms in the network. The quality criteria that guide the network’s vetting process are documented in the Bankeo Trust Index.

Frequently asked questions

How long should the onboarding process for a new accounting client take? The active stages (engagement letter, initial meeting, data collection, and access) take two to three weeks in a structured process. Follow-up continues until day 90, with checkpoints at 30, 60, and 90 days.

Is an engagement letter required in Canada? Documenting the engagement in writing is the practice recommended by CPA Canada and provincial accounting bodies, and some engagements require it under applicable standards. Check the requirements of your professional body; in any case, working without a written framework exposes you to unnecessary risk.

What documents should you request first from a new client? Financial statements and tax returns for the last two fiscal years, the closing trial balance, bank statements for the past twelve months, recent notices of assessment, and access to the existing accounting software. Send the complete list in one go via a secure portal.

How to Handle a Client Who Doesn’t Provide Their Documents? Schedule follow-ups in advance (Day 3, Day 7, Day 14) rather than reaching out unexpectedly; offer a 15-minute call to resolve any issues, and document any delays. If the behaviour persists, address it early: the engagement letter, which outlines the client’s responsibilities, serves as your basis.

Is specialized software needed to structure the onboarding process? No, not to start with: an engagement letter template, a list of required documents by client profile, a sample agenda, and a follow-up schedule are sufficient. A secure client portal is the first useful investment; automation comes next, once the process has stabilized.

How does Bankeo make it easier to onboard new clients? Requests sent to firms in the network are verified in advance: described needs, industry, entity type, and deadline. You begin the onboarding process with a clear understanding of the context rather than starting from scratch, and the service fee is a fixed amount known in advance for each completed case, never a percentage of your fees.

Sources

• CPA Canada, Resources for Accounting Firm Management, on the written documentation of engagements, accessed in July 2026.
• Bankeo, Accounting Fees Barometer 2024-2026, internal data based on more than 15,000 requests received since 2023: median of approximately $3,000 per year, ranging from $500 to $6,000 depending on the industry.
• Bankeo, Bankeo Trust Index, a checklist of more than 20 criteria for verifying the network, accessed in July 2026.

By Brian Bergeron, founder of Bankeo. Bankeo Pro connects more than 1,500 registered accounting firms with pre-qualified requests from business owners across Canada: qualified clients, with all the necessary background information available from day one (4.7/5 based on 180+ Google reviews). Discover Bankeo Pro for your firm.