Industry context (2026)
The US marketing/creative agency segment generated $720B in revenue in 2024 (IBISWorld), with small (1-10 person) and mid-market (11-50 person) agencies accounting for $410B of that. Typical agency billing: monthly retainers ($5K-$50K SMB clients, $50K-$500K+ enterprise) plus pass-through media spend often marked up 10-15%. Agency client churn averages 12-18% annually; growth depends on retention more than acquisition. Sales tax treatment varies — service-only agency billing exempt in most states, but tangible deliverables (printed materials) become taxable.
Agencies Invoicing Challenges
Multiple billing models per client
Some clients are on retainer, others are project-based, some have hourly overages on top of fixed fees. The AI adapts to any billing structure from a plain-text description.
Pass-through costs
Media spend, software licenses, stock imagery, contractor fees — agencies need to invoice pass-through costs alongside service fees. The AI itemizes both clearly.
Volume of invoices
30+ clients means 30+ invoices per month. AI generation cuts creation time from hours to minutes.
Team review and delivery
Invite owners, admins, members, or read-only viewers, review every document before delivery, and keep invoice and payment history in one workspace.
How InvoiceQuickly Helps Agencies
One description, one invoice
Type 'March retainer for BlueStar — creative services $8,000, SEO management $3,000, Meta ad spend pass-through $12,500, hourly overage 15 hours at $175/hr' — get a complete invoice.
Client-specific templates
Save templates per client with their billing structure, payment terms, and project codes. Reuse monthly.
Retainers without repetition
Create recurring schedules for repeat clients, choose review-first or automatic sending, and let reminder rules follow up on unpaid work.
Team access
Project managers, account directors, and finance can collaborate in one workspace. The free tier includes up to 5 invoices and 5 clients; paid plans unlock unlimited invoices and clients for growing agencies.
A typical day for agencies
A small marketing agency invoices eight retainer clients each month. The operator duplicates each prior invoice, updates the service period and pass-through media spend, reviews the totals, and sends each PDF. InvoiceQuickly reduces repetitive invoice entry, but the operator still controls the monthly schedule and each send.
When InvoiceQuickly fits — and when it doesn't
InvoiceQuickly fits small agencies that send repeat and project invoices, need to itemize labor versus pass-through spend, and want fast drafting without per-user pricing. It is less suitable for agencies that require scheduled recurring invoices, bulk sending, project management, or time tracking in the same tool.
Last verified: April 2026
Create Your First Invoice from a Prompt
Describe your work in plain English, review the generated draft, and make any changes before sending.
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Frequently asked questions.
Can I bill retainers and project fees on the same invoice?
Yes. Describe both: 'March billing for ClientX — monthly retainer $5,000, website redesign phase 2 $12,000, stock photography $350.' The AI creates clear sections for each line item.
Can agency teams review invoices together?
Yes. Pro supports up to five seats with owner, admin, member, and read-only viewer roles. Teams can review invoices, track delivery and payments, and explicitly export reviewed invoices to QuickBooks Online or Xero.
Can multiple team members create invoices?
Yes. Your organization can invite team members to create and manage invoices together. The free tier caps total invoices and clients (5 each); paid plans remove those limits so everyone can work at full volume.
Useful, occasional notes
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