Marketing Agency Invoice Template
Bill a monthly retainer, ad-spend management fee, campaign builds, and overage hours the way agency clients expect to see them — fill in the template below online and download it as a PDF in about a minute, no account required.
Northline Growth Marketing
Invoice #NGM-0714 · Harbor & Reed Co. — July retainer
| Description | Qty | Rate | Amount |
|---|---|---|---|
| Monthly retainer — strategy & account management | 1 | $3,500.00 | $3,500.00 |
| Ad spend management fee — 15% of $12,000 managed spend | 1 | $1,800.00 | $1,800.00 |
| Campaign build — Q3 product launch | 1 | $1,200.00 | $1,200.00 |
| Hours over retainer (6 hrs @ $95/hr) | 6 | $95.00 | $570.00 |
| Subtotal | $7,070.00 | ||
| Total due — Net 15 | $7,070.00 | ||
The $12,000 media budget behind the management fee above is billed and paid directly to Google/Meta — not through this invoice.
Create this invoice freeThis is a live layout preview, not a downloadable file — the generator fills it with your details and exports a PDF. No Word or Excel file to hunt for.
What to include on a marketing agency invoice
Retainer billing gets messy fast when spend, fees, and hours all blur into one line. These are the fields that keep an agency invoice audit-proof for the client.
Billing period and retainer scope
State the month being billed and what the retainer covers — strategy, account management, reporting — so a client can match the invoice to the statement of work without emailing you to ask.
Channels and accounts managed
List which platforms this invoice covers — Google Ads, Meta, LinkedIn, TikTok, SEO — especially when a client runs campaigns across more than one and expects to see spend broken out per channel.
Ad spend vs. management fee — kept separate
Never blend media spend and your fee into one line. Show the ad platform budget (paid directly by the client, or passed through) and your management fee as distinct rows — this is the single biggest source of billing disputes in agency invoicing.
Deliverables produced this period
Campaign builds, landing pages, creative assets, or a new funnel launched — name the actual output, not just "marketing services," so the invoice reads as work done, not a vague retainer charge.
Hours used against the included bucket
If the retainer includes a set number of hours, show hours used and hours remaining (or overage), the same way a law firm or agency time-tracking summary would.
Reporting cadence and next billing date
Note when the performance report goes out and when the next invoice is due — retainer clients renew more smoothly when the cadence is visible on every invoice, not just in an onboarding email.
Invoice basics
Your agency name and contact info, the client's billing details, an invoice number, issue date, and due date — the fields every invoice needs regardless of trade.
Sample line items for a marketing agency invoice
A retainer month broken into the line items agency clients actually expect to see — swap the rates for your own and add or remove rows in the generator.
| Line item | Why it’s its own line | Qty | Rate | Amount |
|---|---|---|---|---|
| Monthly retainer — strategy & account management | Covers channel strategy, campaign oversight, and client reporting for the billing period, invoiced in advance. | 1 | $3,500.00 | $3,500.00 |
| Ad spend management fee — 15% of managed spend | Fee for planning, bidding, and optimizing $12,000 in Google + Meta ad spend; the $12,000 media budget itself is billed and paid directly to the ad platforms, not through this invoice. | 1 | $1,800.00 | $1,800.00 |
| Campaign build — Q3 product launch (Meta + Google) | New campaign structure, ad creative variants, landing page brief, and audience/targeting setup — a one-time build outside the retainer scope. | 1 | $1,200.00 | $1,200.00 |
| Hours over retainer (18 included, 24 used) | Six overage hours for an unplanned mid-month creative refresh, billed at the standard hourly rate. | 6 | $95.00 | $570.00 |
| Landing page copy & creative refresh | Ad-hoc deliverable requested outside the standard monthly scope of work. | 1 | $450.00 | $450.00 |
Marketing agency invoicing tips
Bill the retainer in advance, not in arrears
Invoice on the 1st for the month ahead, not on the 30th for the month behind — retainer work is ongoing, and billing in advance protects your cash flow if a client pauses or churns mid-cycle.
Decide who fronts ad spend — and price accordingly
If the client pays the ad platform directly, your invoice only shows the management fee. If you front media spend and bill it back, add it as its own pass-through line (often with a small handling markup) and get spend caps agreed in writing before you commit the budget.
Check sales tax on digital advertising services
A growing number of states and jurisdictions tax digital advertising or marketing services differently than traditional consulting — rules vary by where you and the client are based. Confirm with your state or a local accountant, then set the correct tax rate per invoice in SendBilling.
Running retainers across a whole client roster? See how SendBilling for agencies handles recurring billing at scale, browse the full invoice templates library, or see plans and pricing.
Marketing agency invoicing questions
Should I invoice ad spend or just my management fee?
Most agencies invoice only the management fee and have the client pay the ad platform (Google, Meta, etc.) directly with their own card or billing account — it keeps you out of the cash-flow and liability loop of fronting client media budgets. If you do front spend, bill it as a clearly separate pass-through line, not blended into your fee.
How do I invoice a monthly retainer for a marketing agency?
Set a fixed billing date (commonly the 1st of the month), invoice the retainer amount in advance for the work ahead, and list what it covers — strategy, management, reporting — so the client can tie the charge to the scope. Any hours or deliverables outside that scope go on the same invoice as separate line items.
Do I need to charge sales tax on marketing or advertising services?
It depends on where you and your client are located — some states tax digital advertising or marketing services, others don't, and the rules have been changing. Check with your state's tax authority or an accountant, then apply (or skip) tax per invoice in SendBilling; nothing is forced on you.
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Updated July 2026