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.
Read the full guide
Agency Invoice: What to Include, How to Write One, and Common Mistakes Learn what to include on an agency invoice, how to write one professionally, and avoid costly billing mistakes. Practical tips for business owners. Read the guide →Related templates & variants
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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.