BOOKKEEPING ENGAGEMENT LETTER
A bookkeeping engagement letter between a provider and a client, ready to customize, send, and e-sign.
PREPARED FOR
Acme Co
PREPARED BY
Northwind Studio
DATE
August 18, 2026
BOOKKEEPING ENGAGEMENT LETTER
An engagement letter from Northwind Studio outlining monthly bookkeeping services, reporting cadence, and year-end handoff.
PREPARED FOR
Acme Co
PREPARED BY
Northwind Studio
DATE
August 18, 2026
Northwind Studio
BOOKKEEPING ENGAGEMENT LETTER
This letter confirms the bookkeeping services Northwind Studio will provide to Acme Co. It covers monthly reconciliation and close, standard management reports, and a clean year-end handoff to the tax preparer.
ACCOUNTING SOFTWARE
QuickBooks
Confirmed at onboarding with access set up.
REPORTING CADENCE
Monthly
Financials delivered by the 15th of the following month.
PERIOD COVERED
12 months
Full fiscal year covered under this letter.
Northwind Studio
BOOKKEEPING ENGAGEMENT LETTER
The engagement runs across three coordinated streams. Each has a defined cadence and closes with a documented deliverable.
PHASE 1 · ONBOARDING
Access setup, chart of accounts review, opening balance validation, and a documented system-of-record setup so the monthly work starts on solid ground.
PHASE 2 · MONTHLY BOOKKEEPING
Bank and card reconciliation, categorization review, accruals, monthly close by the 15th, and standard management reports delivered to leadership.
PHASE 3 · YEAR-END
Tie-out schedules, adjusting entries, and a documented year-end package the tax preparer can pick up without additional questions.
Not included: tax preparation, payroll processing, sales tax filing, accounts payable and accounts receivable management, and full-cycle financial statement audits. Additional scope can be added in writing at any time.
Northwind Studio
BOOKKEEPING ENGAGEMENT LETTER
Fees are a fixed monthly retainer for bookkeeping and reporting, plus fixed one-time amounts for onboarding and the year-end handoff.
| Item | Rate | Qty | Amount |
|---|---|---|---|
| Monthly bookkeeping retainer | $650 | 12 | $7,800 |
| Onboarding and chart of accounts setup | $750 | 1 | $750 |
| Year-end handoff package | $500 | 1 | $500 |
| Total | $9,050 | ||
| Milestone | Share | Amount |
|---|---|---|
| On signature (onboarding) | Upfront | $750 |
| Monthly retainer | Monthly, 1st | $650 |
| Year-end handoff | On completion | $500 |
Invoices are due within 15 days. The engagement continues month to month and can be ended by either party with 30 days written notice.
Northwind Studio
BOOKKEEPING ENGAGEMENT LETTER
To engage the bookkeeper for the year, complete the fields below and sign. Onboarding is scheduled within one week of the signed letter being returned.
ENGAGEMENT START DATE
PRIMARY FINANCE CONTACT
CLIENT
Acme Co
PROVIDER
Northwind Studio
The Bookkeeping Engagement Letter template is a five-page document for locking in monthly bookkeeping work with a client. It includes an overview with stat cards for software, cadence, and period, a three-stream scope of work, a fee table with a computed total, and an acceptance page with inputs and signatures.
Use it to make onboarding, monthly reporting, and year-end handoff explicit. Merge fields handle the client details and date, and the last page collects a start date, finance contact, and both signatures.
Everything below comes pre-configured. Turn sections on or off, edit the copy, or add your own — Bonsai remembers your choices for next time.
Can I edit every section? Yes — every heading, paragraph, stat, table row, and signature block is fully editable in Bonsai.
Can I add more pages? Yes — add, reorder, or duplicate pages once the template is open.
Do merge fields auto-fill? Yes — Sender, Receiver, and Date pull from your client contact and the current date automatically.