Marketing Agency Invoice Template
Agencies bill a messy mix: a monthly retainer, project work, hours over the cap, and pass-through ad spend or licenses. This template separates every type so clients see exactly what's agency fee versus what's reimbursable media — the split that keeps agency invoices from getting queried.
Last reviewed 2026-07-08
Template preview
- From:
- Northline Agency · billing@northline.co
- Bill to:
- Client Co · Attn: Marketing · ap@client.com
- Invoice #:
- NL-2026-207
- Billing period:
- Jun 2026
- Due date:
- 2026-07-30 (Net 30)
| Description | Qty / hrs | Rate | Amount |
|---|---|---|---|
| Monthly retainer — social + content | 1 | $5,000.00 | $5,000.00 |
| Extra design hours (over retainer) | 8 | $120.00 | $960.00 |
| Ad spend managed (pass-through) | 1 | $3,200.00 | $3,200.00 |
| Stock & licensing (at cost) | 1 | $180.00 | $180.00 |
| Agency fees | $5,960.00 | ||
| Pass-through costs | $3,380.00 | ||
| Tax (on fees, if applicable) | $476.80 | ||
| Total due | $9,816.80 | ||
How to fill in each field
Retainer vs overflow
Bill the flat retainer as one line, then any hours over the cap separately at your rate.
Common mistake: Absorbing overflow into the retainer and quietly under-billing the agency.
Pass-through ad spend
Show managed media/ad spend as a clearly labeled pass-through line, separate from fees.
Common mistake: Blending ad spend with fees, so the client can't reconcile their media budget.
Markups & licenses
Disclose any markup on media or bill licenses at cost per your agreement.
Common mistake: Undisclosed markups — a fast way to lose an agency client's trust.
Tax base
Apply tax to the taxable services, not to pass-through reimbursements (rules vary).
Common mistake: Taxing pass-through ad spend, which inflates the bill incorrectly.
Related templates & variants
This is the agency variant of our invoice. Law firms use the legal version; solo consultants the consulting version; broad use is on the invoice pillar page.
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Recommended tools
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Frequently asked questions
What should a marketing agency invoice include?+
The agency and client, billing period, the retainer, any overflow hours, pass-through costs like ad spend and licenses shown separately, tax on the taxable fees, and the total due with terms.
How do agencies bill for ad spend?+
Show managed ad spend as a distinct pass-through line (often billed at cost, sometimes with a disclosed management fee or markup). Keeping it separate from your agency fees prevents disputes.
Retainer or hourly for agency work?+
Many agencies use a monthly retainer for baseline scope and bill overflow work hourly. State both clearly so clients understand what the retainer covers.
Sources & further reading
- Marketing invoice: template and tips (Portant)— portant.co
- Invoice requirements and best practices (Stripe)— stripe.com
We review authoritative guidance when building each template. Links are for reference only.