Consultant Invoice Template (Free)

What this is

A consultant invoice bills for advisory time or a fixed engagement fee, with a structure that accommodates both hourly billing (with a time breakdown) and fixed-fee milestone billing.

When to use it

Billing hourly consulting time for a billing period
Invoicing a fixed-fee engagement milestone
Billing reimbursable expenses alongside consulting fees

What to include

Billing period or milestone reference

For hourly billing, the date range covered; for fixed-fee, which milestone this invoice corresponds to.

Hours or fee breakdown

If hourly, a summary of hours (a detailed time log can be attached separately if the client requires it).

Expenses

Reimbursable expenses listed separately from the fee, with receipts referenced or attached.

Payment terms and methods

Net terms and every accepted payment method.

The template

Copy this into your own document, or build it directly as a branded page in Hanko. Bracketed text like [Client Name] is a placeholder to fill in.

Invoice

Invoice #: [INV-001]

Issue date: [Date] | Due date: [Date]

Billing period: [Start Date] – [End Date] (if hourly)

From

[Your Name / Firm Name]

[Address]

[Email / Phone]

Bill to

[Client Company Name]

[Client Contact Name]

[Client Address]

Fees

Description Hours Rate Amount

[Consulting services — describe] [X] $[rate]/hr $[amount]

— or, for fixed-fee —

[Milestone X — description] — — $[amount]

Expenses (if applicable)

Description Amount

[Travel, materials, etc. — receipts on request] $[amount]

Totals

Subtotal (fees): $[amount]

Expenses: $[amount]

Tax ([rate]%, if applicable): $[amount]

Total due: $[amount]

Payment terms

Due within [15] days of issue date.

Payment methods

Card, ACH, wire transfer [and stablecoin — USDC, if applicable]. Payment link: [link]

How to customize it

For hourly billing, decide whether a detailed time log is attached or available on request — some clients require it, others don't

Keep expenses as a separate section from fees, since they're often taxed or approved differently

For fixed-fee milestones, reference the specific milestone from the signed SOW so both sides can cross-check it

Round hours consistently (e.g., to the nearest quarter-hour) and state your rounding policy if a client asks

Common mistakes

No billing-period or milestone reference, making it hard for the client to match the invoice to the engagement

Expenses buried inside the fee line item instead of itemized separately

No stated hourly rounding policy, leading to disputes over small time discrepancies

Missing a reference to the underlying agreement or SOW, especially for fixed-fee milestone invoices

Frequently asked questions

Should hourly consulting invoices include a detailed time log?

Many clients expect at least a summary; some require a full log. Clarify this in the consulting agreement up front rather than assuming either way.

How should expenses be invoiced?

As a separate line or section from consulting fees, ideally with receipts referenced or attached, since expenses are often treated differently for tax and approval purposes.

Can a consultant invoice combine hourly and fixed-fee work?

Yes, if the engagement includes both, but keep them as clearly separated sections so the client can see what each amount is for.

Consultant invoice template