Invoice for Interior Designers

Interior design invoices mix creative fees, product procurement and site services. Getting them right protects your margin — and your client relationship.

What to include on the invoice

1. Your business name, address and contact
2. Client name and email
3. Unique invoice number and issue date
4. Due date and payment terms
5. Itemized services with quantity, rate and amount
6. Any applicable taxes
7. Subtotal, tax, discounts and grand total
8. Accepted payment methods and payment link

Sample invoice

Item	Qty	Rate	Amount
Design fee — living + dining	1	$3,500	$3,500
Product procurement (cost + 25%)	1	$8,200	$8,200
Site visits (4 @ 2 hrs)	8	$150	$1,200
Installation day	1	$1,600	$1,600

Pricing structures that work

Structure	When to use	Example
Flat design fee	Predictable for the client	$3,500 per room
Hourly	Small consultations	$125–$300/hr
Cost-plus	Procurement markup	Cost + 20–35%
Retail markup	Trade → retail resale	Keystone (2x cost)

Payment terms

• Design fee 50% up front, balance at concept sign-off.
• Product 100% up front — you're paying the vendor.
• Installation billed after completion, Net-7.
• Storage after 14 days billed at $75/week.

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Frequently asked questions

Do I mark up furniture on the invoice?

Yes — either show cost + markup transparently, or invoice the full retail price. Pick one model per client and stick to it.

Is design fee refundable?

Design time already delivered is non-refundable. Say so on every invoice and in your contract.

How do I handle client-supplied items?

Note them on the invoice as "client-provided" with $0 amount so scope is documented but not billed.