Interior Design Pricing: How to Charge for Your Services (Fee Models Explained)

Short answer: Interior designers charge in one of six ways: hourly, flat fee, per square foot (or square metre), cost-plus (a markup on furnishings), a percentage of the project budget, or a fixed e-design package. There's no single right model. The best one is the one that covers all your hours, including the unglamorous ones, and that your client can understand before they sign. Whatever you pick, put it in a written contract with a retainer up front.

This guide is for new and established residential designers, decorators and e-designers in the US and UK. It explains how each fee model works, when to use it, how to protect yourself with retainers and change orders, and how to raise your fees without losing good clients. It deliberately doesn't give "average" prices, because rates vary too much by city, scope and experience; it shows you how to work out your own.

What are the main ways interior designers charge?

There are six common models, and many designers mix two of them (for example, a flat design fee plus a markup on purchased items). The table shows how they compare. Treat the "best for" column as a starting point, not a rule.

Fee model	How it works	Best for	Watch out for
Hourly	You bill time spent, usually with a minimum or a not-to-exceed estimate	Consultations, small or uncertain scope, short fixes	Clients may watch the clock; keep time logs and send regular summaries
Flat (fixed) fee	One price for a defined scope, paid in stages	Single rooms, whole-home plans with a clear brief	Scope creep; define rooms, deliverables and revisions precisely
Per square foot / square metre	A rate multiplied by the area being designed	New builds, renovations, larger projects	Area doesn't reflect complexity; a small kitchen takes more work than a large bedroom
Cost-plus	Furnishings are bought at your cost (or trade price) and sold with an agreed markup	Full-service projects where you purchase and manage everything	Clients should understand and agree to the markup up front
Percentage of project cost	A percentage of the total build or furnishing budget	Large renovations with contractors and a defined budget	Your fee moves with a budget you don't fully control
E-design package	Fixed price per room: concept board, layout, shopping list; the client buys and installs	Remote clients, smaller budgets, DIY-minded homeowners	No site control; set clear limits on revisions and support

How do you work out your hourly rate and minimum project fee?

Add up your yearly business costs and the income you need, then divide by the hours you can realistically bill. That gives you a floor rate. Everything you charge should sit at or above it.

1. List your costs for the year: software (CAD, rendering, project management), samples and swatches, insurance, accounting, marketing, vehicle and travel, phone and internet, studio or co-working space, and training.
2. Set your income target: what you want to take home before personal tax.
3. Add tax: in the US, self-employed designers pay self-employment tax as well as income tax. In the UK, sole traders pay income tax and National Insurance, and may need to register for VAT once taxable turnover passes the threshold (£90,000 at the time of writing). Check with an accountant.
4. Count billable hours honestly: a designer who works 40 hours a week often bills far fewer, because prospecting, admin, bookkeeping and learning aren't billable. Be conservative.
5. Divide: total needed ÷ billable hours = your minimum hourly rate. Our free service pricing calculator runs this math with your own numbers.

Use that floor to set a minimum project fee, too. A small project still involves a consultation, a site visit, measuring, a concept, a proposal and project admin. If a job can't cover its fixed set of tasks at your floor rate, it isn't worth taking at that price.

Where do the hours on a design project actually go?

Most of a project's hours are not "design" in the creative sense. They're sourcing, revisions, ordering and chasing. Pricing only for the concept stage is the most common reason new designers undercharge.

Project stage	Typical tasks	Often forgotten?
Consultation and brief	Initial call, site visit, measuring, photos, understanding budget and style	Sometimes
Concept and layout	Space plans, mood boards, material and colour palette, first presentation	No
Revisions	Changes after feedback, second and third presentations	Yes
Sourcing and specification	Finding products, comparing options, samples, checking lead times and dimensions	Yes
Purchasing and admin	Quotes, orders, deposits, tracking deliveries, returns and damages	Yes
Trades coordination	Briefing contractors, answering questions, site visits during work	Yes
Installation and styling	Receiving, placing, final styling, snagging list	Sometimes

If a quoted fee only covers the first two rows, you'll be working unpaid on the rest. Add the other stages into your fee or break them out as separate, clearly priced services.

Which fee model should you use?

Use the model that makes your risk smallest and your client's cost clearest. A few rules of thumb:

• Unclear brief or exploratory work: hourly with a cap or estimate, then switch to a flat fee once the scope is clear.
• Single room or defined plan: flat fee, billed in stages (for example, at signing, at concept approval and at final specification).
• Whole-home or renovation projects: a flat design fee or per-area fee, plus cost-plus on furnishings you purchase.
• Remote clients or smaller budgets: an e-design package with a published price per room.
• Working alongside an architect or builder: a percentage of the project cost is common, but cap your hours and define deliverables so a budget change doesn't wreck your margin.

When you're not sure, a paid consultation is a low-risk way to test the fit. Many designers credit part of that fee against the full project if the client signs. That keeps your first meeting from becoming free design work.

How should you handle markups and trade discounts?

Tell clients how you earn money on products before they sign, and write it into the contract. Designers who buy furnishings usually get a trade discount from suppliers and either pass some of it on, keep it as part of their fee, or add a markup. Each approach can be fine; surprising the client is not.

• Cost-plus: the client pays your cost plus an agreed percentage, and sees supplier invoices. This is the most transparent version.
• Retail price with trade discount kept: the client pays the same as retail, and you keep the discount. Say so in the agreement.
• Fee only: you charge a design fee and the client buys directly from retailers, sometimes using your trade accounts for a discount.

Two practical cautions. First, many trade accounts have terms about resale and who the buyer is; check your supplier agreements. Second, if you purchase on a client's behalf, be clear about who holds the risk when something arrives damaged, late or wrong. Sales tax in the US (which varies by state, and may need a resale certificate for trade purchases) and VAT in the UK also affect how you invoice, so ask your accountant how to show them.

What should a retainer, deposit and payment schedule look like?

Charge a design retainer before concept work starts, and take deposits for products before you order them. This keeps you out of the position of funding a client's furniture or doing unpaid design work for someone who then disappears.

1. Design retainer: due at contract signing, applied to your fee. Don't start work before it's paid.
2. Stage payments: bill at clear milestones, such as concept approval and final specification, rather than leaving everything until the end.
3. Product deposits: collect the client's payment (or a large deposit) before you place orders; custom and made-to-order items are often non-cancellable once ordered.
4. Final balance: due on delivery or before installation, not weeks after.

In the UK, consumer contracts signed at home or online usually carry a 14-day cancellation period under consumer contract rules, and deposits that are non-refundable should be a reasonable reflection of your costs under the Consumer Rights Act 2015. In the US, cooling-off rules for some home-based sales and state-level contractor laws can apply. Check your local rules or ask a solicitor or attorney to review your template.

How do you stop scope creep with revisions and change orders?

Define the deliverables and the number of revision rounds in the contract, and put anything outside that in writing as a change order before you do it. Scope creep happens in friendly ways: "can you just look at the hallway too?" or "could we try one more rug?"

Situation	What to put in the contract	What to do when it happens
Extra rooms or areas	Name each room included	Send a short change order with the new fee and timeline
More revision rounds	State the number included (for example, two)	Offer extra rounds at an hourly rate or a flat add-on
Client changes their mind after ordering	Orders are final once placed unless the supplier allows changes	Explain restocking or cancellation costs, then quote the alternative
Delays caused by the client or trades	A validity period for the fee and a hold fee for long pauses	Remind them of the timeline and agree a restart plan
Site visits beyond those included	List included visits; extras billed hourly plus travel	Confirm in writing before the visit

Are there rules on calling yourself an interior designer?

It depends where you are, so check before you advertise. In the US, some states restrict use of the title "interior designer" or "registered interior designer" to people who meet education, experience and examination requirements (the NCIDQ exam is a common benchmark), while "interior decorator" is generally less restricted. Rules differ by state and can also affect whether you can submit plans for permits. In the UK, "interior designer" isn't a protected title, though membership bodies such as the BIID set voluntary standards.

Carry professional liability insurance if your work includes specifications or project management, and make sure contractors have their own insurance. If a project involves structural, electrical, gas or planning issues, bring in the right licensed professional. Your fee model won't protect you from a specification mistake.

How do you raise your interior design fees?

Raise fees for new inquiries first, give existing clients notice, and tie the change to a clearer or improved offer. Small, regular increases are easier to explain than a large jump after years at the same price.

1. Review your last few projects: compare the hours you actually worked with what you billed.
2. Update the packages: include more (a second site visit, a shopping list, installation support) or remove free extras you used to give away.
3. Tell past clients early: a short, friendly note with the effective date.
4. Honor signed proposals: keep the old price for work already agreed, within a set validity period.
5. Watch your inquiry-to-contract rate for a couple of months before deciding what to change next.

A full calendar or a growing waiting list is one of the clearest signs your fees are too low. The other half of the equation is getting more of the right clients; our guide on how to get interior design clients covers the channels that work, and the client acquisition strategies guide helps with the sales conversation.

Common interior design pricing mistakes

• Pricing only the concept: sourcing, ordering, revisions and coordination are most of the work.
• Free consultations that turn into free design: charge for the first meeting or limit what it covers.
• Vague scope: "design the living room" can mean three different things; list deliverables.
• Hidden markups: clients who find out later lose trust; explain the model upfront.
• No retainer: without one, clients can walk away after you've done the planning.
• Copying a competitor's rate: their costs, experience and positioning aren't yours.
• Never reviewing your fees: your costs rise every year even when your prices don't.

If you've been pricing by instinct, compare your proposals against the hours table above and recalculate. The same logic applies if you also serve creative clients like photographers; see our photographer pricing guide for a similar method. Results depend on your market, experience and portfolio, so treat any figure you calculate as your own starting point, not a promise of income. Our free marketing plan generator can help you plan how to fill your calendar at the new rates.

Frequently asked questions

How much should an interior designer charge?

There's no standard figure. Rates vary by city, experience, project size and the model you use. Work out your floor rate from your costs, tax and income target, then check it against what similar designers in your area charge, and set your packages at or above that floor.

Is it better to charge hourly or a flat fee for interior design?

Flat fees suit defined projects because clients know the total and you're paid for your expertise rather than speed. Hourly suits uncertain or small jobs. Many designers start hourly for the consultation, then move to a flat fee once the scope is agreed.

Do interior designers charge for the initial consultation?

Many do. A paid consultation filters out people who aren't serious and covers your site visit and advice. Some designers credit the fee against the full project if the client signs.

What is the difference between cost-plus and a flat design fee?

A flat design fee pays for your planning and creative work. Cost-plus applies to products: you buy at your cost or trade price and add an agreed markup. Designers often combine them, with a design fee plus cost-plus on the furnishings they purchase.

How do e-design prices work?

E-design is usually sold as a fixed price per room, including a concept board, layout and shopping list, with a set number of revisions. The client buys and installs the items, so your fee covers design time only, not procurement.

Do I need a contract for every interior design project?

Yes. A written agreement should cover scope, fees, retainer, payment schedule, revisions, change orders, product orders and returns, timelines and cancellation. Ask a lawyer or your professional association for a template that fits your state or country.