Digital agencies juggle retainers, projects, and ad spend. Everhour connects billable rates to invoicing without losing margin detail.
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A digital agency invoice turns approved work into a payment request the client can match to a proposal, retainer, project, or campaign. The invoice should identify the agency and client, show a unique invoice number, list the invoice and due dates, describe the services, show units and rates, include taxes or other charges where applicable, and state the total amount owed.
Agency invoices commonly cover monthly retainers, fixed project phases, hourly specialist work, ad management, pass-through expenses, or mixed billing. A useful invoice mirrors the engagement agreement. If the proposal says strategy, design, and launch are separate milestones, the invoice should keep those lines separate instead of compressing everything into one vague service total.
Hourly agency billing usually uses either one blended rate for all contributors or role-specific specialist rates. A sample line can read: Paid search optimization, 12.5 hours at $150 per hour. Role-based billing can split strategist, designer, developer, and account manager time so the client sees the rate structure agreed before work started.
Retainers and project fees need different detail. A monthly retainer often covers a set number of hours or deliverables, with terms explaining whether unused hours expire or roll over. Fixed project fees are typically based on estimated labor, associated costs such as software subscriptions, and margin for scope changes, revisions, or delays. Longer projects commonly use milestone invoices for strategy approval, design delivery, or campaign launch.
Digital agency invoices become confusing when service fees and client pass-through costs sit in the same line. PPC management is a common example: agencies often charge a flat monthly retainer or 10% to 30% of monthly ad spend, while campaign budgets and ad spend stay separate from the management fee. The invoice should show that distinction clearly.
Sales tax also needs state-specific handling. The United States does not use a national VAT or GST invoice regime, and there is no single national sales tax rate. State and local sales and use tax rules depend on nexus, the buyer's location, and whether the specific service is taxable. California generally taxes retail sales of tangible personal property and only some service or labor charges, while Texas defines 16 broad categories of taxable services.
A one-off invoice is enough when the job is small, the fee is fixed, and the client only needs a clean payment request. It works for a single landing page, a discovery workshop, or a 50% upfront deposit and 50% completion balance. Keep the invoice tied to the proposal, payment terms, and any contract-authorized late fee.
A managed workflow matters when multiple people track billable time across retainers, projects, and specialist rates. Everhour separates cost and billable rates, supports default per-person rates and per-project overrides, preserves dated rate history, and prices billable work by project, member, or task. That structure keeps client invoices connected to margin, not just hours.
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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Use the billing model stated in the engagement agreement. Digital agencies commonly invoice hourly work, fixed project fees, recurring retainers, performance-based fees, value-based fees, or a mixed model. The invoice should show the same structure the client approved, including service lines, units, rates, milestones, deposits, or deliverables.
Ad spend can appear on the same invoice if the agreement treats it as a pass-through cost, but it should sit on a separate line from the agency's management fee. PPC management fees are often a flat monthly retainer or a percentage of monthly ad spend, while the campaign budget remains a distinct client cost.
A United States digital agency invoice does not use a national VAT or GST invoice regime. Sales and use tax obligations are imposed by states and local jurisdictions. A seller may need a state seller permit or sales-tax account where taxable sales and nexus rules apply, but there is no United States VAT or GST registration number for invoices.
Show the retainer period, covered services, fee, payment terms, and any rule for unused hours or deliverables. If the retainer covers a set number of hours, state the included amount and the rate for overage work. If it covers deliverables, list the deliverables instead of presenting the retainer as open-ended availability.
The most common dispute starts when the invoice does not match the proposal or contract. A client who approved a fixed milestone fee expects milestone language, while a client who approved role-specific hourly rates expects hours and rates by role. Clear line items, dates, payment terms, and pass-through cost labels reduce avoidable back-and-forth.
Everhour separates internal cost rates from client-facing billable rates, with default per-person rates and per-project overrides. Agencies can price work by project, member, or custom task rate, and dated rate changes keep older reports tied to the rate that applied when the work happened.
Everhour Billing & Invoicing converts tracked billable time and expenses into client invoices. Users can select uninvoiced time, preview the breakdown, group invoice line items by project, task, person, date, or another available structure, and exclude non-billable work from the invoice amount.
Track billable work by client, project, member, or task, then price invoices from the rates already attached to the work. Everhour keeps agency billing tied to margin.
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