Template
Client Onboarding Checklist for Agencies and Service Firms
A client onboarding checklist lists every step between a signed proposal and the first delivered result: contract and billing, welcome, access to accounts and assets, kickoff, the first deliverable and a 30-day review. The version below is built for agencies, consultancies and other firms that deliver work for clients.
Next steps for your team
- Complete the billing setup form Due Oct 22
- Upload the W-9 and the insurance certificate 1 of 2
- Sign the data processing agreement Sign
- Pick a time for training 3 slots open
Why service firms need their own onboarding process checklist
When an agency or consultancy signs a new client, the clock starts. The client expects to see progress quickly, but the work cannot begin until someone has access to the ad accounts, the analytics, the brand files, the content calendar or the finance system. In most firms that collection happens over two weeks of polite emails.
A client onboarding checklist shortens that window. It makes every request explicit on day one, gives the client a date for each item and keeps the first deliverable in sight. It also protects the relationship: the client knows what you need from them, and nobody is surprised when a launch date moves because an access request sat unanswered.
The checklist below is the version we see work for marketing agencies, design studios, IT consultancies and accounting firms. It is shorter than a software implementation checklist because the work is delivered by people, but it is stricter about access and approvals.
Collect access in week one
Every login and asset you need is requested at once, with an owner on the client side and a date.
Aim at the first deliverable
The checklist is built backwards from the first piece of work the client will see, not from your internal setup.
Close with a 30-day review
A short review confirms the client got what they expected and catches scope drift early.
The client onboarding checklist
Copy it, replace the bracketed placeholders, and delete the items that do not apply to your service.
Client onboarding checklist
Client onboarding checklist for [Client name]
Service [Retainer or project name], account lead [Name], first deliverable due [Date]
1. Contract and billing (day 0 to 2)
- Signed proposal or SOW stored with the client record
- Billing contact, invoice address and PO number received from the client
- First invoice or deposit sent, payment terms confirmed
- Scope summary written in five lines for the delivery team
2. Welcome (day 1 to 3)
- Welcome email sent by the account lead, with who is who on your side
- Client portal or shared folder opened for the client
- Intake questionnaire sent with a due date
- Kickoff meeting booked with all decision makers invited
- Client named their main contact, approver and billing contact
3. Access and assets (week 1)
- Access to [ad accounts, analytics, CMS, CRM, finance system] granted to named people on your team
- Brand assets uploaded (logo files, brand guide, fonts, photography)
- Existing reports, plans or audits shared
- Confidentiality or data processing agreement signed if client data is handled
- Access tested by your team, not only granted
4. Kickoff (week 1 to 2)
- Intake answers reviewed before the meeting
- Goals and how success is measured agreed in the client's words
- Timeline to the first deliverable confirmed
- Approval process agreed (who approves, how many rounds, how fast)
- Communication rhythm set (weekly call, status email, shared channel)
- Kickoff notes and next steps shared within 24 hours
5. First deliverable (week 2 to 3)
- First deliverable produced and checked internally
- Delivered to the approver with a clear request for feedback by [Date]
- Feedback received and changes logged
- Approval recorded with name and date
6. 30-day review
- Short review call held with the main contact
- Results so far compared with the goals set at kickoff
- Open requests that sit outside the scope listed and priced or parked
- Next 60 days agreed and written down
What to collect from each kind of client
The Access and assets stage is where client onboarding stalls. These are the items service firms most often forget to ask for on day one.
| Type of firm | Access to request | Easy to forget |
|---|---|---|
| Marketing agency | Ad accounts, analytics, tag manager, social accounts, CMS | Billing admin on ad accounts, past campaign exports, brand voice notes |
| Web or design studio | Hosting, domain registrar, CMS, design files | DNS access, licensed fonts, legal copy owner |
| IT consultancy or MSP | Admin consoles, network diagrams, vendor contracts | After-hours contact, change window, license keys |
| Accounting or finance firm | Accounting system, bank feeds, payroll reports | Prior year filings, signed engagement letter, authorization forms |
| Management consultancy | Internal reports, org chart, data room | Interview schedule with executives, confidentiality terms |
If you sell software rather than services, the longer onboarding checklist template adds setup, data migration and integrations. Agencies can read how the whole flow runs in practice on the agency client onboarding page.
An example from a fictional agency
Brightline Health, a group of urgent care clinics, signs a six-month paid search retainer with a fictional agency. The account lead sends the welcome email the same afternoon with a portal link. In the portal Brightline sees eight items: billing contact, ad account access, analytics access, call tracking export, brand guide, list of clinic locations, approver name and kickoff booking.
Their marketing manager completes five items in the first two days. The remaining three, all owned by their IT team, get an automatic reminder on day four. Kickoff happens on day six with access already tested, and the first campaign restructure goes to the approver on day twelve. At the 30-day review the agency and client agree to add two new clinic locations as a priced change rather than a favor.
Nothing in that story needs a special tool. It needs a checklist that is followed every time and a place where the client can see what they owe.
Run the checklist without chasing
OnboardingCustomers turns a client onboarding template like this one into a plan for each new client. Paste the proposal or SOW, and the AI onboarding plan builds the stages with dates from your kickoff.
- The client gets a branded portal with only their items, opened by a secure link.
- Logins and files go through document collection, not email attachments.
- Late items trigger reminders on a schedule you set.
- Approvals are recorded with a name and a timestamp, which settles scope questions later.
Plans start at $49 per month billed yearly, and every plan lets you invite as many client contacts as the work needs.
Frequently asked questions
Still deciding? Write to [email protected] and a person on our team answers.
What should a client onboarding checklist include?
How is a client onboarding checklist different from a customer onboarding checklist?
How long should client onboarding take?
How do I stop chasing clients for logins and files?
Can I reuse this as a client onboarding template in my own tools?
Give every new client a portal with their checklist
Paste your proposal or SOW, and OnboardingCustomers builds the onboarding plan and opens a branded portal where the client completes their side.