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Bookkeeping client onboarding checklist

Eight steps to run before you touch a new client's first month — no signup required.

Practical guidance for bookkeeping firms. Not tax, legal or accounting advice — adapt it to your firm's engagement letter and workflow.

  1. Confirm the engagement scope in writing. What months are you responsible for, which accounts, and what's explicitly out of scope (payroll, tax filing, AP/AR management)? Put it in the engagement letter, not just a conversation.
  2. Get the prior bookkeeper or software export. If the client is switching, request the trial balance, chart of accounts and the last reconciled statement date before you start — not after you find a gap.
  3. List every account that needs a statement. Bank accounts, credit cards, and payment processors (Square, Stripe, PayPal) they actually use. Ask the client to name every account explicitly — don't assume you've been told about all of them.
  4. Set a specific due date and reminder cadence. 'Send it when you can' rarely arrives on time. Agree on a day of the month and how many reminders you'll send before you escalate.
  5. Ask the questions that don't show up on a statement. New locations, ownership changes, large one-off transactions, and anything the client considers 'obviously fine' — these are the answers that prevent misclassified entries later.
  6. Decide who signs off, and how. Name the person authorized to accept your first month's deliverable — vague sign-off is one of the most common causes of scope disputes.
  7. Agree on how documents move between you. Email attachments get lost. Whatever tool you use, make sure both sides know exactly where 'send it here' means.
  8. Set expectations for exceptions. Tell the client upfront that some months will have questions or corrections — normalizing this reduces friction the first time it actually happens.

If you're doing this today across email threads and shared drives, Cohesio is being built to turn this checklist into a workspace your client actually opens — with the requirements, due date and sign-off built in from the first invitation.

See how Cohesio structures this exact checklist

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