Media agency billing runs through IOs, retainers, and pass-through costs, and Everhour keeps reporting tied to that work.
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Media agencies usually invoice across several billing models: project work, agency-of-record retainers, hourly-rate services, cost-plus arrangements, and media commissions. The invoice has to show which model applies to the current billing period. A monthly retainer for planning, a campaign setup fee, and a pass-through media cost should appear as separate lines because the client approves each one against a different expectation.
For a media-buy invoice, start with the insertion order context. Include the IO number, advertiser, brand or campaign name, billing period, deliverables, dates, and any agency-required reference. A client reviewing a paid social or display campaign should see the connection between the invoice and the approved media plan without opening three separate files.
The IAB/4As standard insertion order defines the media buy before it runs: deliverable types and amounts, prices, maximum spend, campaign start and end dates, and third-party ad server contact details when relevant. An invoice that omits those anchors creates avoidable review work, especially when the client has multiple campaigns active in the same month.
Media costs commonly follow the IO and related reporting. Under IAB/4As standard terms, media companies invoice agencies using net cost after any agency commission, based on actual delivery, flat fee, or prorated delivery over the IO term as specified in the IO. Agencies can request proof of performance, and media-company reporting can break activity out by day, creative execution, placement, impressions, clicks, spend or cost, and IO-defined variables.
Media-buy terms often use a 30-day payment standard from invoice receipt unless the IO states another schedule. The timing also matters upstream. The IAB/4As standard terms call for the initial media invoice after the first month of delivery or within 30 days after IO completion, whichever comes earlier, and non-correction invoices are generally due within 90 days after delivery of all deliverables.
United States invoices do not follow a national VAT or GST invoice regime. State and local sales and use tax rules control whether tax applies, based on nexus, the place of sale, and the taxable product or service. Service taxability varies by state and service type, so an agency invoice should show the tax treatment used for that client and avoid adding a generic national tax line.
A free invoice is enough when you need one clear bill for a campaign, retainer, or media placement and already have approved numbers from the IO, timesheets, and reporting. It also works for a small agency sending a monthly invoice with a few line items, net-30 terms, and a simple PDF archive.
A managed workflow becomes necessary when tracked billable hours, non-billable account time, retainers, expenses, and campaign reporting all feed billing. Everhour reporting gives agencies configurable columns, grouping, filters, exports, scheduled email delivery, and profitability dashboards, so billing review can use the same underlying time and project data as client reporting.
This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.
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A media agency invoice should identify the client, advertiser, brand or campaign, invoice number, invoice date, billing period, payment terms, and line items. For media buys, add the IO number, approved references, campaign dates, deliverables, pricing basis, and spend details. For retainer or project work, show the fee, covered scope, and any billable hours or pass-through expenses separately.
A media agency can combine retainers and media costs when the client contract allows it, but the lines should stay separate. The retainer line covers agency services for the period. Media cost lines should reference the campaign, IO, placement, or platform and show whether the amount is pass-through, net of agency commission, or tied to another agreed pricing method.
A U.S. media agency invoice does not use a national VAT or GST registration number because the United States does not have a national VAT or GST invoice regime. Sales and use tax obligations come from state and local rules. Sellers that make taxable sales may need state-level sales-tax registration, such as a seller permit or sales-tax account where required.
Proof of performance should match the billed period and the campaign references on the invoice. Useful support includes reporting by day, creative execution, placement, impressions, clicks, spend or cost, and the IO-defined variables the client uses for approval. The invoice should summarize the bill; the support file should give reviewers enough detail to approve it without disputing delivery.
Sequential-liability language affects whether the agency or advertiser bears unpaid media amounts. Under IAB/4As standard terms, unless the IO says otherwise, the agency is liable to the media company only after advertiser funds have cleared to the agency, and the advertiser remains solely liable for uncleared sums. The invoice and IO should align on that payment responsibility.
Everhour reporting lets media agencies build reports with 45+ columns, filters, grouping, date ranges, exports, scheduled email delivery, and profitability dashboards. An agency can review billable time, non-billable time, project costs, revenue, invoice status, and margins before sending a client invoice.
Everhour Billing & Invoicing turns tracked billable time and expenses into client invoices, with line items grouped by project, task, person, date, or other available breakdowns. Invoiced time is marked as invoiced, which prevents the same approved work from appearing again in a later invoice.
Turn campaign work, retainers, and billable time into reporting that supports every invoice. Everhour gives media agencies configurable billing reports and exports tied to project profitability.
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