How to Invoice as a Bookkeeper: Rates, Terms and Templates

TL;DR: Separate recurring monthly-close fees from ad-hoc cleanup projects, itemise software pass-throughs and filing support by jurisdiction, and invoice after each month-end close with a short memo noting what was delivered and any client deadlines that affect next month's work.

Bookkeepers often support ongoing reconciliations, payroll file prep, sales tax filings, and cleanups. Your invoice should reflect recurring cadence (monthly close) and ad hoc projects (historical catch-up) separately so clients understand base fees versus spikes.

Use plain language—many small-business owners are not accountants.

Invoices also reinforce deadlines you depend on: when bank feeds must be categorized, when inventory counts land, and when owners approve owner draws. A short memo on each bill trains behavior without nagging in email.

Typical rates

Monthly fixed fees scale with transaction volume, entity count, and software; hourly suits cleanups and diagnostics. Per-entity or per-account add-ons are fair when complexity jumps. The AICPA offers professional standards context; linking clients to their own CPA for tax advice keeps your scope clear on invoices labeled bookkeeping only.

Software subscription costs you resell should be pass-through lines, not buried in labor.

Catch-up projects should show date range covered (“Jan 2023–Mar 2023 backlog”) so clients understand why the first bills look nothing like steady-state monthly fees.

Sample invoice line items

When to send the invoice

For monthly ongoing bookkeeping, invoice within the first week of the following month, after you have closed the prior month's books. Tying the invoice to the close creates a natural trigger: the client receives the financial statements and the invoice at the same time, reinforcing the connection between your work and the deliverable.

On catch-up and cleanup projects, invoice at milestones (e.g., after each quarter of backlog is reconciled) rather than waiting until the entire multi-month cleanup is finished. This keeps your cash flow steady and gives the client progress visibility.

For quarterly filing support (sales tax, payroll reports), invoice immediately after filing with the confirmation or filing reference number included. The client can see the filing was completed and match the charge to the specific obligation.

Payment terms

Net 15 after month-end close is typical; prepaid monthly works for new or historically late clients. Quarterly filing prep can be invoiced before filing deadlines. Align due dates with when clients have cash from their own AR—some prefer Net 30; document it.

If you pause work for nonpayment, reference your engagement letter terms in reminders—not on the invoice body unless policy requires.

Sales tax nexus or payroll tax due dates differ by jurisdiction—when you invoice filing support, name the jurisdiction on the line so owners know what calendar you are protecting.

What to include

Service month, deliverables (reconciliations, financials package, filing support), software fees if applicable, meeting or training time if billable, tax, total, due date. See how to write an invoice for identifiers and numbering.

Note client responsibilities (receipt uploads by X date) in memo lines when delays affect your workload.

Cross-check core invoice fields so AP portals that demand legal entity names and remittance addresses stop bouncing your PDFs.

Common mistakes

Calling advisory work “bookkeeping” without licenses where regulated—keep titles accurate. Bundling payroll processing without stating compliance limits. No distinction cleanup vs ongoing—clients think the higher cleanup rate is permanent. Missing 1099 or year-end surcharges when agreed—list them explicitly in season.

Stale W-9 or business legal name on file causes AP rejections—verify once per year.

Silent scope expansion when the client adds another LLC—update the agreement and show per-entity lines before the work piles up.

FAQ

Should I charge per transaction or a flat monthly fee? Flat monthly fees are simpler and more predictable for both parties, but they should be based on an estimated transaction volume range. If the client's volume doubles, your fee should adjust. Some bookkeepers set tiers (e.g., up to 150 transactions/month, 150-300, 300+) and note the current tier on the invoice so both sides know when a rate adjustment is warranted.

How do I handle a client who is consistently late sending receipts or bank access? Reference your engagement letter's client-responsibility clause on the invoice memo when delays occur ("Note: March close delayed 5 days pending bank feed access -- received [date]"). This documents the pattern without being confrontational and protects you if the client later complains about late financial statements.

Do I invoice separately for each entity when a client has multiple LLCs? Yes, ideally. Separate invoices per entity keep the client's books clean and make it easy to allocate costs to the correct business. If the client insists on a single invoice, use clearly labelled sections per entity with subtotals so their accountant can allocate correctly.

Template link

Our bookkeeper invoice template supports recurring monthly blocks and project line items.

Attach a one-line close checklist in your cover email when you bill month-end—clients pay faster when they trust the books are actually closed.

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