Interior Designer Fees 2026: Hourly, Percent and Flat
Interior designer fees in 2026: hourly, percentage of project cost, flat fee, cost-plus and per square foot pricing, with BLS data and a worked example.
Quick answer: Interior designer fees are usually charged hourly, as a flat fee, as a percentage of project cost, as cost-plus (a markup on furnishings purchased) or per square foot. BLS data shows US interior designers earned a May 2024 median of $63,490 a year ($30.52 an hour) as employees; independent designers charge more to cover their business costs.
Interior design pricing confuses clients because designers often combine models, such as a design fee plus a markup on furniture. Designers, meanwhile, risk losing money on projects with endless revisions or purchasing headaches. This guide explains every common fee structure, benchmarks, illustrative ranges, a worked example with real numbers and how designers should invoice fees, purchases and reimbursables.
What are interior designer fees?
Interior designer fees are what a designer charges to plan, specify and often manage changes to interior spaces. Work typically moves through phases:
- Consultation and programming: needs, budget, measurements.
- Concept design: mood boards, layouts, finishes.
- Design development: detailed plans, lighting, millwork, specifications.
- Procurement: ordering furniture, fixtures and materials.
- Project management and installation: coordinating trades, deliveries and styling.
Fees can be charged per phase, for the whole project or in a mix. Professional bodies such as the American Society of Interior Designers (ASID) publish resources on working with designers and contracts.
How much do interior designers make? BLS data
The BLS Occupational Outlook Handbook reports that interior designers earned a median annual wage of $63,490 in May 2024, or $30.52 per hour. That is employee pay at firms. Independent designers set higher hourly rates because they pay for their own software, insurance, marketing, samples, vehicle and unbillable time, and because client billing rates at firms are typically well above the designer's wage.
Interior designer fee structures compared
The ranges below are illustrative US figures for residential projects, for planning only, not survey results.
| Fee model | Illustrative range (USD, 2026) | Best for | Watch out for |
|---|---|---|---|
| Hourly rate | $75 to $250+ per hour | Consultations, small projects, uncertain scope | Open-ended totals; ask for time reports |
| Flat fee (per room or project) | $1,500 to $15,000+ per room or phase | Defined scope | Revision limits and scope changes |
| Percentage of project cost | About 10% to 30% of project cost | Large renovations and full-service projects | Which costs the percentage applies to |
| Cost-plus (markup on purchases) | Often 15% to 35% over trade cost | Furnishing-heavy projects | Disclosure of trade discounts |
| Per square foot | About $5 to $20+ per square foot | New builds and commercial spaces | Room complexity varies widely |
| E-design (online, per room) | $200 to $1,500 per room | Budget-conscious DIY clients | No site visit or installation |
Illustrative only. Fees vary by region, designer experience and project scope.
Hourly
Hourly billing is transparent and fair when scope is unclear, and suits consultations and small jobs. Clients worry about runaway totals, so offer estimates by phase and send regular time reports. A time and materials invoice shows hours and expenses clearly.
Flat fee
A flat design fee gives the client certainty. Designers must define deliverables (number of concepts, drawings, revision rounds, site visits) and price changes separately through change orders.
Percentage of project cost
Common on large renovations where the designer manages much of the process. The fee scales with the project, but clients may question whether the designer is motivated to keep costs down. Define the base: construction, furniture, both or neither.
Cost-plus
The designer buys goods at trade prices and charges cost plus a markup. This rewards procurement work, which is time-consuming (ordering, tracking, receiving, inspecting, handling damage). Explain it in the contract. Our cost-plus pricing guide explains the math.
Worked example: a living and dining room project
A homeowner hires a designer to redesign an open-plan living and dining room, including a lighting plan, furniture, rugs and window treatments. The designer charges a flat design fee plus 20% markup on trade-cost purchases, with hourly billing for extra site visits. Figures are an illustrative example.
| Line item | Qty | Rate | Amount |
|---|---|---|---|
| Design fee: concept, layout, lighting plan, specifications (2 rooms) | 1 | $4,800 | $4,800.00 |
| Furniture, rugs and lighting at trade cost | 1 | $18,500 | $18,500.00 |
| Procurement markup (20% of trade cost) | 1 | $3,700 | $3,700.00 |
| Custom window treatments (trade cost plus 20%) | 1 | $3,000 | $3,000.00 |
| Additional site visits beyond 3 included | 2 hrs | $150 | $300.00 |
| Freight and receiving (reimbursable) | 1 | $650 | $650.00 |
| Subtotal before tax | $30,950.00 | ||
Sales tax may apply to goods depending on the state; the sales tax calculator helps estimate it, and our guide to sales tax on US invoices explains the basics. In this example, the designer's earnings are the $4,800 design fee, $3,700 markup on furniture, $500 markup on window treatments ($2,500 cost x 20%) and $300 in extra visits: $9,300 in total. The freight is a pass-through cost, listed under reimbursable expenses.
How to set your interior design fees: step by step
- Calculate an hourly floor from income, overhead and billable hours, and check it against the BLS benchmark plus your costs.
- Track hours by phase on past projects to build flat fees.
- Choose your model (or a mix) for each type of client: e-design, single room, full renovation.
- Decide on procurement: whether you buy goods, your markup and how you disclose it.
- Write a contract covering phases, deliverables, revision rounds, site visits, retainers, purchasing deposits, returns and cancellation. Our statement of work template is a good base.
- Collect a retainer before design starts, and full deposits on furniture before ordering.
- Bill by phase using milestone payments.
Full-service vs partial service vs e-design
Many designers offer tiers so clients can choose how much help they need.
- Full service: the designer handles everything from concept to installation, including purchasing and coordinating trades. Fees are highest, but so is convenience.
- Partial service or consultation: the designer provides plans, specifications and shopping lists, and the client buys and coordinates. Often hourly or a flat fee per room.
- E-design: online concepts, floor plans and shopping lists for a flat fee per room, without site visits.
Designers can use these tiers to serve smaller budgets without discounting their full-service rates. Clients should compare tiers by what is included, not just price.
Who pays for furniture, and when?
Purchasing is where many interior design disputes start. Common arrangements:
- The client pays vendors directly using the designer's specifications. Simple, but the client loses any trade discount unless the designer shares it.
- The designer buys at trade and resells to the client with a disclosed markup, collecting full payment or a substantial deposit before ordering.
- A purchasing fee is charged as a percentage of goods bought, without reselling.
Whichever you use, state it in the contract along with return policies, damage handling and who pays freight, receiving and storage. Custom upholstery and made-to-measure items are typically non-refundable once ordered.
Common mistakes with interior design fees
- Ordering furniture before the client pays. Custom pieces are usually non-returnable.
- Unlimited revisions on flat-fee concepts.
- Undisclosed markups, which damage trust when clients find trade prices.
- Not charging for procurement time, one of the most time-consuming phases.
- Unclear percentage base, causing disputes about which costs count.
- Missing sales tax on goods resold to clients.
How to invoice interior design work
Separate design fees, purchases, markups, reimbursables and tax on the invoice, and reference the project phase. Send a retainer invoice at signing, purchase invoices before ordering and phase invoices as work completes. Our interior design invoice template is set up for these lines. If you collaborate with architects or contractors, compare with the architect invoice template and remodeling invoice template so everyone's billing lines up.
Interior designer fees are easiest to agree when the model, scope and markup are written down at the start. When it is time to bill, the free invoice generator lets you list design fees, purchases, markups and reimbursables, needs no sign-up and downloads a PDF built in your browser. You can create an interior design invoice for each phase in minutes.
Frequently asked questions
How do interior designers charge?
Interior designers commonly charge in one of five ways or a combination: an hourly rate, a flat design fee, a percentage of the total project cost, cost-plus (a markup on furniture and materials they purchase) or a price per square foot. Many combine a design fee with a markup on purchases. Ask which model a designer uses and get it in a written agreement.
What percentage do interior designers charge?
When designers charge a percentage, it is applied to the total cost of the project, such as construction, furnishings and installation. The percentage typically falls as project size rises, and it varies by market and scope. Clarify exactly which costs the percentage applies to, because including or excluding construction makes a large difference to the fee.
Do interior designers mark up furniture?
Many do. Designers often buy furniture and decor at trade prices, which are lower than retail, and then charge the client a price above their cost, either retail or cost plus a percentage. This is legitimate if disclosed. Clients should ask whether purchases are marked up, by how much and whether the designer passes on any trade discount.
Is an interior decorator cheaper than an interior designer?
Decorators focus on furnishings, color, fabrics and styling, and often charge less than designers who handle space planning, built-ins, lighting plans and coordination with contractors. Some US states regulate the use of the title interior designer or certain types of work. Choose based on the scope: decor refresh or layout and construction changes.
What is an e-design service?
E-design is an online service where a designer provides a design concept, floor plan, mood board and shopping list for a room, usually for a flat fee per room, without visiting the site or managing the purchase and installation. It costs less than full service but leaves ordering, delivery and installation to the client.
What is a design retainer?
A design retainer is an upfront payment that secures the designer's time and is applied against future fees, often for the early design phases. It protects the designer from doing concept work for a client who then disappears. The agreement should say whether the retainer is refundable and how it is credited on later invoices.
Do interior designers charge sales tax?
It depends on the state and what is being sold. Furniture and goods resold to clients are often taxable, while design services may or may not be taxable depending on the state. Designers who resell goods may need a seller's permit and resale certificate. Check your state tax agency or an accountant. This is general information, not tax advice.
How can I keep interior design fees under control?
Agree a clear scope and budget at the start, choose a fee model that fits the project, limit revision rounds and decide whether you or the designer will buy furniture. For hourly arrangements, ask for regular time reports. Make decisions promptly, because changes after orders are placed can add both design time and restocking or cancellation fees.
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