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Interior Design Pricing Calculator
Trade-to-retail markup, designer hourly rate, and project fee — calculated using the same margin engine that powers Visura Flow projects. Share results via link, export as a client-ready PDF.
UK markup benchmarks by category
Typical multiplier ranges UK studios apply to trade pricing. Useful reference points if you're calibrating retail pricing.
Sources: BIID member guidance, SBID studio surveys, common UK trade-show literature. Treat as orientation, not gospel — your local market and supplier mix matter.
How to calculate interior design markup
- Step 1Enter the trade cost
Type the supplier's trade price (excluding VAT) into the £ input. The calculator works in GBP pence to avoid rounding errors.
- Step 2Set the markup
Drag the markup slider to your target percentage. The multiplier (e.g. 2.4×) updates live alongside it for designer-friendly reading.
- Step 3Read the result
The retail price, profit per item, and margin as a percentage of retail update instantly. Check the UK benchmark ranges below to compare against your category.
Frequently asked questions
What's a typical markup for interior designers in the UK?
Most UK interior designers apply a multiplier between 1.8× and 3.0× on trade prices, with furniture often closer to 2.0–2.4× and soft furnishings 2.2–3.0×. The right number depends on your supplier mix, service model (FF&E vs. cost-plus), and how much project management you're absorbing into the price.
Should I charge a flat fee, hourly, or cost-plus?
Flat fees suit small, well-scoped cosmetic projects where the brief is unlikely to shift. Hourly works for mid-scope projects with evolving briefs — pair it with a cap so the client isn't anxious. Cost-plus or a mixed model (flat design fee + cost-plus on procurement) is standard for full renovations and multi-room projects.
How do I calculate my minimum hourly rate as a designer?
Add your target annual take-home to your fixed annual overhead (rent, software, insurance, accounting), then divide by realistic billable hours per year. Most studios bill 50–60% of worked hours — so a 40-hour week is closer to 22–24 billable hours.
Is this calculator free? Do I need an account?
It's free, with no signup or email gate. Results are computed in your browser — nothing is sent to a server. You can copy a shareable link to save your inputs, or download a one-page client-presentable PDF.
Where do these benchmark ranges come from?
The category multipliers are drawn from BIID member guidance, SBID studio surveys, and trade-show literature. They're orientation values for the UK market — your local supplier discounts, project mix, and brand positioning will shift the right number for you.
Will the calculator save my numbers?
Your inputs are encoded into the URL automatically, so bookmarking or copying the link saves them. We don't store anything server-side. If you want a permanent record on a real project, that's where Visura Flow comes in — its margin engine uses the same maths and persists per-line-item.
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