What is a marketing agency invoice?
A marketing agency invoice is the bill an agency or freelance marketer sends for retainers, campaigns, content, advertising management and related costs. Marketing invoices often combine several types of charges in one billing period, so clarity matters: the client should see what was included in the retainer, what was extra and what was passed through at cost.
This free template includes the campaign name, billing period and PO number, and keeps retainers, project work and ad spend on separate lines.
What to include on a marketing agency invoice
- Agency details: agency name, address, email and phone.
- Client details: the company, billing contact and PO number.
- Billing period and campaign: the dates and the account or campaign the work belongs to.
- Retainer: the monthly fee for ongoing services.
- Services: social media, SEO, content, email marketing, design or strategy.
- Ad management: management fees for paid search and social campaigns.
- Pass-through costs: ad spend, software or printing, billed at cost or with an agreed markup.
- Terms: the due date and payment details.
How to fill out this marketing agency invoice template
- Add your agency logo and contact details.
- Enter the client, campaign, billing period and PO number.
- Check the invoice number and dates. The due date is set 30 days ahead.
- Edit the retainer, services, management fees and ad spend lines.
- Add tax if it applies and any payment already received.
- Review the notes, mention attached reports, and download the PDF.
Common agency pricing models
Monthly retainer
A fixed fee for an agreed set of services each month. It gives the agency predictable revenue and the client a dedicated team.
Project fees
A price for a defined campaign, launch or website. Often billed in milestones.
Percentage of ad spend
A management fee calculated as a percentage of media spend, common for paid advertising. Show the spend and the fee separately.
Hourly
Used for consulting, audits and out-of-scope work.
Send a short report with every invoice
Clients approve marketing invoices faster when they can see what the money achieved. A one-page summary attached to the invoice is often enough. Consider including:
- Key results for the period, such as leads, sales, traffic or engagement.
- Ad spend compared with the agreed budget.
- Deliverables completed, such as posts published, emails sent or pages optimized.
- Next month’s plan and any approvals you need from the client.
Mention the report in the invoice notes, as in the sample. Linking the bill to results turns the invoice from a cost into a conversation about growth.
Tips to get paid faster
- Get the PO number first. Many companies cannot pay an invoice without one.
- Send a report with the invoice. Results make it easy for the client to approve the bill.
- Avoid fronting large ad budgets. Ask clients to prepay ad spend or pay platforms directly.
- Use recurring invoices for retainers. They go out on time every month without manual work.
UniqInvoice sends recurring retainer invoices, tracks what each client owes and follows up automatically on late payments.
