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IDMBA Business Brief

Serious business advice from David Shepherd for interior design firm principals.
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5) Why Most Design Firms Are Accidentally Nonprofit
There is a particular kind of successful interior design firm that is, by any observable measure, thriving. The principal is busy. The projects are good. The clients are happy. The studio looks the part. Revenue is growing. And yet at the end of the year, after everyone has been paid — vendors, s...
Mar 27, 2026
4) You Can Only Control Four Things When it Comes to Making Money
Most design firm principals spend a significant portion of their working lives worrying about things they cannot control. The economy. Interest rates. Whether the luxury market softens. Whether a key client decides to renovate or wait. Whether a competitor opens three blocks away. None of that is...
Mar 20, 2026
3) The Difference Between Cash and Profit: Why Your P&L Is Lying to You
You finished the year with a profit. The accountant confirmed it. The tax bill arrived to prove it. So why is your checking account empty? This is not an unusual question in interior design. It is, in fact, one of the most common — and most demoralizing — experiences a design firm principal can h...
Mar 13, 2026
2) Scaling the Cash Flow Hierarchy: How to Move from "Just Breaking Even" to Making Work Optional
Most design firms that look successful from the outside are quietly stuck. The principal is earning a decent living, paying himself or herself a salary, taking the occasional vacation. By any reasonable measure, the business is working. What it isn't doing is building anything. No excess cash mea...
Mar 06, 2026
1) Don't be a Bank for Your Clients
Too many interior designers are financing their clients' merchandise purchases. Here's how to stop — and get paid your profit upfront. Here's a scenario I see constantly in interior design firms: the client approves a proposal, the designer gets a deposit from the client and orders the merchandis...
Feb 27, 2026

IDMBA Business Brief

Serious business advice from David Shepherd for interior design firm principals.
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