Free Architect Invoice Template

What is an Architect invoice?

An architect invoice documents fees for the professional design and management services provided during a building or renovation project. Architectural services are typically structured across defined RIBA stages (or equivalent): from initial feasibility and briefing through concept design, planning application, technical design, construction management, and project close-out. Because architecture projects span months or years and involve significant liability, invoicing is closely tied to project stages. Architects charge either a percentage of the construction cost, a lump sum, an hourly rate, or a combination depending on project type and client agreement. Detailed, stage-based invoices protect the architect's fees and provide the client with a clear audit trail of services rendered.

What to include on an Architect invoice

• Your practice name, ARB registration number, and contact details
• Client name and project address
• Invoice number and issue date
• RIBA stage or project phase
• Services provided in this stage
• Fee basis (percentage, lump sum, hourly)
• Disbursements and expenses (planning fees, surveys)
• VAT number and VAT amount
• Payment terms and due date
• Bank details for payment
• Project name/address and project number
• Current phase and percent complete
• Fee basis (% of construction cost, stipulated sum, or hourly)
• Reimbursable expenses itemized separately from basic fee

Common architect invoice line items

Setting your architect rates

Full-service residential work is most often priced as a percentage of construction cost, typically 8-15% (up to ~20% on remodels/complex work), and billed by phase; hourly work and additional services run $100-300/hr depending on seniority and market. The AIA phase split is roughly schematic 15%, design development 20%, construction documents 40%, bidding 5%, construction administration 20% of the basic fee.

Payment terms

Retainer/initial deposit at engagement, then monthly invoicing on percentage-of-phase-completion, Net 15-30; final phase payment tied to deliverable/occupancy.

Billing pitfalls to avoid

• When the fee is a percentage of construction cost, the invoiceable amount moves as the estimate/actual cost changes; define whether the percentage applies to the estimate, bid or final cost to avoid disputes at each draw.
• Reimbursable expenses (printing, reproduction, travel beyond a set radius, permit fees, consultant coordination) are billed separately from the design fee, usually at cost or cost plus a markup, and must be pre-authorized in the agreement.
• Phased/percentage-of-completion billing ties each invoice to milestone progress; billing ahead of the phase you have actually delivered invites client pushback and payment delay.
• Additional services and revision rounds beyond the agreed scope (extra design options, owner-driven changes) should be billed hourly as a separate line, not absorbed into the fixed phase fee.
• Construction administration has grown to 22-30% of effort due to change orders and material substitutions; under-scoping CA and billing it flat leaves site-visit and coordination time unrecovered.

Tax notes

Architectural (professional) services are exempt from sales tax in most states, but a minority tax design/professional services or specific deliverables, so confirm the project state's rule. Reimbursable pass-through costs may carry their own tax treatment and should be itemized separately from the fee.

This is general guidance, not tax advice. Tax rules vary by country, state, and situation, so confirm with a qualified accountant before relying on it.

How to invoice as an architect

Invoice at the end of each RIBA stage or at agreed monthly intervals for construction-stage work. Include a clear description of which stage has been completed and what services were delivered. For hourly rate commissions (common for smaller residential projects), submit monthly invoices with a timesheet attachment showing hours worked per day. Disbursements should be invoiced at actual cost with receipts available. VAT at 20% applies to all UK architectural services. Net 14 to Net 30 depending on client agreement.