A client’s owner’s agent asks to see your vendor receipts. Not a casual question, a pointed one, timed to arrive mid-project when saying no feels like it could cost you the relationship.
That’s the situation a member described to Interior Design Community‘s Instagram audience: an owner’s agent requesting the original invoices behind furnishings the designer had sourced through her own trade accounts and resold. Her contract addressed it. She assumed the rest of the industry treated it the same way, and wanted to know if that assumption held.
It does, but only for designers who’ve actually built the protection instead of inheriting it as a vague habit. Vendor invoice confidentiality isn’t automatic. It’s a policy, and like any policy, it only works if you priced it, wrote it down, and rehearsed how to say it out loud before a client’s representative asked.
Why Trade Pricing Stays Behind the Curtain
The community’s answer to “is this confidential” was close to unanimous, and the reasoning matters more than the consensus. As @ljdbranches put it, the relationship is retail, not pass-through:
“Invoice is the receipt. You do not walk into a store and ask the owner to show you what they paid for the item they sell you. You get a receipt for the price of re-sale set by the store. That’s why we have a re-sale license. We say we have trade discounts that vary by account. Some are wholesale, some only a small percentage off retail. Those trade discounts are not ours to disclose.”
@ljdbranches
This is the structural argument, and it’s worth internalizing because it changes how you talk about the issue. You are not a purchasing agent forwarding a bill. You hold a resale license, you buy at trade pricing, and you sell at a price you set. Your invoice to the client is the receipt for that transaction. What you paid your vendor is a separate, private transaction between you and that vendor, the same way a furniture store’s wholesale cost has nothing to do with the price tag on the showroom floor.
That framing does two things. It gives you language that isn’t defensive, and it explains why “trade discounts are not ours to disclose” isn’t a policy you invented to protect your markup. Resale works everywhere, and interior design isn’t a special case that owes clients more transparency than a retailer does.
Think about how this plays out in other trades a client already trusts without question. A general contractor doesn’t hand over the lumber yard invoice. A caterer doesn’t itemize what they paid the produce supplier. A jeweler doesn’t disclose what a stone cost before it was set. Clients accept markup as the cost of expertise, sourcing access, and risk in every one of those relationships. Interior design is no different, except that designers are sometimes talked out of holding the same line because the request feels personal rather than transactional.
Most of that structure gets built long before a client asks. Getting Trade Accounts as a New Interior Designer: What You Actually Need covers the resale certificate, EIN, and account paperwork that put you in a resale position in the first place.
Where the Boundary Actually Gets Tested
Here’s what separates designers who hold this line easily from those who get cornered by it: the contract you wrote determines how much room a client’s representative has to push.
@katerinabuscemi flagged the real variable in the thread:
“The owners agent may be accustomed to working with a contractor using a cost plus contract. It also matters how you worded your contract – is it cost plus, did you share markup percentiles? That opens up the door for them to request receipts.”
@katerinabuscemi
This is the business impact most designers underweight. Owner’s agents, project managers, and construction attorneys often come from a world of cost-plus contracts, where the point is that the client sees every invoice and pays a percentage fee on top. If your own contract language echoes that structure, even loosely, you’ve handed the other side a reasonable argument for why they should see your invoices too.
The fix isn’t just having a policy. It’s making sure your contract reads like a retail-resale agreement, not a cost-plus one, from the first draft a client signs. If you disclose markup percentiles anywhere in your paperwork, or describe your fee as a percentage added to vendor cost, you’ve built a document that invites exactly the request you don’t want.
There’s a legal wrinkle worth naming carefully here. @kenneth_crawford_interiors_ raised a state-specific claim:
“State of Florida it is a law that if a client wants to see your quotes they have the right. However they do not have the right to see that source.”
@kenneth_crawford_interiors_
Educational content, not legal advice. Whether a specific state requires disclosure of quotes or estimates, separate from vendor source information, is a question for your own attorney and your own state’s statutes and licensing rules. This comment does confirm that the confidentiality of where you buy and what you paid can survive even in jurisdictions that require some form of pricing disclosure to the client. Those are two different questions, and your contract should be precise about which one you’re answering.
If you are not certain which side of that line your own paperwork sits on, Flat Fee, Hourly, or Hybrid: How Interior Designers Choose the Right Fee Structure lays out how each model treats vendor cost and where the disclosure expectations differ.
The Designers Who Choose a Different Model
Not every designer treats vendor invoices as untouchable, and the thread surfaced a legitimate alternative worth understanding before you dismiss it.
@scheinmandesignman described a more transparent structure:
“I show receipts and then a separate line for the markup in my invoicing.”
@scheinmandesignman
This works. Some designers run their business on visible markup, itemizing vendor cost and design fee as two separate lines rather than folding them into a single resale price. It can build trust with certain clients, and it sidesteps the “what are you hiding” instinct that sometimes drives these requests in the first place.
It also changes what you’re selling. A confidential resale model prices your sourcing relationships and time into one number, and the client is buying a finished result. A visible-markup model prices your expertise as a separate, named line item, which means you need to be comfortable defending that number on its own, without the cushion of a bundled price. Some designers find that clarifying. Others find it invites negotiation on a fee that was never meant to be negotiable.
But it’s a model, not a default, and switching to it mid-project because a client pushed back is a mistake. If you want transparent markup, build it into your fee structure and your contract from the start, price your time and risk accordingly, and apply it consistently. What you should not do is cave into ad hoc disclosure because one client’s representative was persistent, while every other client on your books is operating under a confidential resale agreement. Inconsistent policy is worse than either model applied consistently.
The risk of caving shows up clearly in @lulux11022’s account of what happened after she chose transparency with one client:
“Here’s what can happen when you show transparency & educate your client regarding trade. Client directly contacted Holly Hunt multiple times to refuse a custom piece with Edelman leather & walked into Paul Ferrante in an attempt to return a chandelier that had been installed in her home for 3 years. She later went into CAI multiple times, dropped trade terminology & attempted to claim my design firm as her own (I have now rebranded using my name). She had used her phone to grab screenshots when I was momentarily out of the room on my RMC. She had copies of invoices to prove items had been ordered. The lesson…some people should never be your client.”
@lulux11022
That’s an extreme case, but the mechanism is ordinary. Once a client has your vendor names, your source pricing, and your account terms, they have the information needed to go around you entirely, whether that’s contacting your vendors directly, walking into showrooms with your terminology, or attempting to return items on relationships you built. Confidentiality isn’t just about margin. It’s about controlling who has access to the trade relationships that took years to build.
How to Set the Policy Before Anyone Asks
The designers in the thread who handled these requests smoothly all had one thing in common: a script they didn’t have to invent under pressure.
Build your contract language first. State plainly that the designer’s invoice is the client’s receipt of record, that the designer purchases through trade accounts at negotiated pricing, and that vendor source information and net cost are proprietary and confidential. Put this near the fee and payment terms section, not buried in boilerplate.
Then build the verbal version, because a request like this rarely arrives as a written letter. It arrives as a phone call or a walkthrough comment, and you need something ready that doesn’t sound rehearsed or defensive. A version close to what several designers described: “My invoice is your receipt for this purchase. Per my contract, vendor source and pricing information is proprietary to my business and isn’t something I share, the same way any retailer wouldn’t share their wholesale costs.” Calm, factual, and delivered once.
One nuance worth building into your script: resist the urge to lean too hard on “it’s in the contract” as your opening line. It can read as evasive, like you’re hiding behind paperwork instead of explaining a normal business practice. Lead with the retail logic, and have the contract as backup if the conversation continues.
Holding this line uses the same muscle as Mid-Project Scope Creep: How to Renegotiate Fees Without Losing the Client: a request that lands mid-project is far easier to answer when you settled it before the project started.
If you’re on a project with an owner’s agent, GC, or client attorney from day one, this is worth addressing before the first invoice goes out, not after the first uncomfortable request. Send a short note in the onboarding packet: how invoicing works, what documentation the client will receive, and what stays confidential. Most of these conversations get tense because the expectation was never set, not because the client is acting in bad faith.
It also helps to decide in advance what you will show. Most designers who handle this well aren’t fully opaque. They’re glad to share the client-facing invoice, a payment history, proof that an item was ordered and delivered, and a general description of lead times. What stays off the table is the vendor’s identity, the account terms, and the net cost. Drawing that line clearly, in the client-facing paperwork itself, removes most of the ambiguity that turns into a confrontation later.
The Invoice Is the Receipt
Strip away the contract language, the state law questions, and the cautionary stories, and the thread lands on one plain idea, stated best by @lsi_workshop:
“You are the retailer. They are buying from you. That’s the end of the story.”
@lsi_workshop
That’s the sentence to build a policy around. Not a workaround, not a defensive posture, just an accurate description of the transaction. You buy at trade pricing because you’ve built the accounts, the relationships, and the license to do so. You sell at a price you set. The invoice you send is the receipt.
The designers who get asked twice for their vendor invoices are usually the ones whose contracts left the question open. The ones who get asked once, and never again, are the ones who answered it in writing before anyone had a reason to ask.
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