What's the right monthly retainer for a bookkeeping firm to charge a 10-employee small business, and how do you avoid scope creep?
The Answer
Charge $800–$1,400/month for a 10-person business. Base it on transaction volume (not hours), lock your scope in writing, and use a tiered add-on menu to handle extras.
---
How to Price It
Retainer bookkeeping isn't hourly—it's a service tier. A 10-employee business typically needs:
- Monthly bank/credit card reconciliation
- Accounts payable entry (50–150 transactions/month)
- Payroll coordination with Gusto or ADP
- Monthly P&L and balance sheet draft
- Tax estimate review (quarterly)
Charge a base retainer covering those five tasks, then layer on add-ons.
Pricing by Region
| Market | Monthly Rate | Notes |
|---|---|---|
| Midwest/South | $800–$1,000 | Lower labor costs, competitive market |
| Tier 2 Cities | $1,000–$1,200 | Growing demand for remote services |
| Coastal/Metro | $1,200–$1,400 | Higher COL; clients expect faster turnaround |
---
Lock Down Your Scope
The scope creep killer: Write a one-page SOW (Statement of Work) that lists:
- Included: Monthly reconciliation, Bill.com sync (if they use it), transaction categorization, payroll oversight
- Excluded: Tax prep (refer to CPA), financial advisory, sales tax filing (separate engagement), restructuring the chart of accounts
- Add-ons with pricing: Bank loan reconciliation (+$200/month), sales tax filing (+$150/quarter), year-end 1099 tracking (+$300)
Monthly check-in: Spend 15 minutes the first Monday reviewing what came in. If they submitted 100 transactions instead of 60, it's not a scope creep—it's volume you priced for. If they ask you to rebuild their Xero chart of accounts, that's out-of-scope and you quote separately.
---
Tools That Stop Creep
- Karbon or Jetpack Workflow: Set task templates by engagement type. Alerts fire when you're 25% over estimated hours.
- Bill.com: Automate bill uploads from clients. Moves the data-entry burden to them.
- QuickBooks Online + Xero roles: Create a client portal role with limited permissions. They can't accidentally ask you to fix things they should be entering themselves.
- Practice Ignition: Invoice-on-milestone templates. Makes "this is the scope we agreed to" crystal-clear.
---
The Retainer Guardrail
When you hit hour creep, renegotiate. If a 10-person firm suddenly has 400 transactions (payroll doubled, acquisitions, new payment processor), they move to $1,800/month or you refer them to a fractional CFO. Both of you win: they get what they need, you stay profitable.
AICPA and NSA (National Society of Accountants) survey data from 2023–2024 shows retainer rates below this range burn firms out within 18 months. Don't be that firm.
---
Mermaid: Monthly Bookkeeping Workflow
---
TAGS: bookkeeping-retainer,scope-creep,pricing-strategy,small-business-accounting,cash-flow-protection,retainer-economics,owner-operator-tactics