Tax Deductions for Interior Designers 2026

Last updated July 2026.

Interior design looks like a service business until tax time, when you realize how much money moves through your books that isn't really yours. You buy furniture, fabric, and fixtures for a client, mark them up, and resell them. You pay for samples, a warehouse corner, a design library subscription, and the miles between showrooms and job sites. If you run your practice on a 1099 or through your own LLC and you are not on anyone's payroll, the IRS taxes your profit, not the gross that lands in your account. Every legitimate cost you track lowers that profit. This guide covers what a US self-employed interior designer can deduct for the 2026 tax year, the two things designers get wrong most often (cost of goods sold and the QBI deduction), and where each write-off belongs on your return.

What can an interior designer write off on taxes?

An interior designer can write off any expense that is ordinary and necessary for the business: design and drafting software, samples and sample books, a home office or studio, warehouse and storage, business mileage, professional education and licensing, marketing, contract labor, business insurance, and the cost of goods you buy to resell to clients. Each one reduces the net profit you pay income and self-employment tax on.

The rule comes from Section 162 of the tax code: the cost has to be ordinary (common in interior design) and necessary (helpful and appropriate for it). A subscription to a 3D rendering tool clears that bar. A weekend of personal furniture shopping for your own house does not, even if it gave you ideas. Mixed-use items, like a phone or car you use for both clients and family, get split, and you deduct only the business share.

Is furniture I buy for a client a deduction or cost of goods sold?

If you buy furniture, fabric, lighting, or fixtures and resell them to the client at a markup, those purchases are cost of goods sold, not an ordinary supply. You deduct them on Schedule C Part III (lines 33 to 42, flowing to line 4), and you claim the cost in the year the item is sold to the client, not the year you paid the vendor. This is the single biggest mechanical difference between interior design and a pure service like graphic design.

Why it matters: the retail price you charge the client is income, and the wholesale price you paid is COGS, so you are only taxed on the markup. Track each purchase against the project it belongs to. Items still sitting in your warehouse at year end are inventory you have not sold yet, so they stay out of this year's deduction until they ship to the client. If instead you invoice the client for goods at your cost and charge a separate design fee, the goods can wash out and the fee is your taxable service income, but you still have to account for the money either way. Keep the vendor invoice for every piece.

Can I deduct samples, swatches, and sample books?

Yes. Fabric swatches, paint samples, tile pieces, finish boards, and sample books you buy to source a project are deductible, usually as a project supply on Schedule C or rolled into cost of goods sold when they tie to a specific job. The key is documentation: keep the receipt and note which client, proposal, or sourcing effort each sample supports. Generic samples you keep in your library for any future project are a supplies deduction in the year you buy them.

Can interior designers take the 20% QBI deduction?

In most cases yes, and this is the deduction designers most often miss. The qualified business income (QBI) deduction lets eligible self-employed people deduct up to 20% of net business profit. Interior design is a strong candidate because, read against the rules, it is generally not a specified service trade or business (SSTB), so the income limits that strip the deduction from doctors, lawyers, and consultants do not automatically knock out designers.

Here is the honest nuance. Interior design is not on the SSTB list, and it is not expressly excluded the way architecture and engineering are. That leaves two catch-alls to watch. "Consulting" is an SSTB, and it means selling advice and counsel; a designer who delivers finished design work, sources product, and manages installation is selling a work product, not pure advice, which supports a non-SSTB position. The "reputation or skill" catch-all is narrow: the final regulations limit it to things like endorsement income, licensing your name or image, and appearance fees, none of which describe an ordinary design practice. A designer whose billing drifts toward pure advice with no deliverable is a closer call.

The practical part: below the 2026 taxable-income thresholds, SSTB status does not matter at all. You get the full 20% either way. Those thresholds are $201,750 for single or head of household filers and $403,500 for married filing jointly. Under the One Big Beautiful Bill Act, the deduction now carries a $400 minimum for anyone with at least $1,000 of active qualified business income, and it was made permanent. If your profit clears the threshold, the classification starts to matter and a tax professional is worth the fee.

Can I deduct my home office or studio?

Yes, if you use part of your home regularly and exclusively for the business. That covers a home studio where you build finish boards and meet clients or a spare room used only for design work. You can use the simplified method, which is $5 per square foot up to 300 square feet for a $1,500 cap, or the actual-expense method that deducts the business percentage of rent or mortgage interest, utilities, insurance, and repairs.

The word that trips people up is exclusively. A dining table you also eat at fails. A dedicated corner used only for the business qualifies. If you rent separate studio or warehouse space, that rent is fully deductible on its own line and does not touch the home office rules.

Can I deduct warehouse or storage space?

Yes. Storage you rent to hold client furnishings, samples, or product waiting for install day is a fully deductible business expense and one of the larger, cleanest write-offs for a firm that moves physical product. Deduct the rent, the receiving or white-glove delivery fees, and any insurance on the stored goods. Keep the lease and the monthly invoices.

How do I deduct mileage between showrooms and job sites?

You deduct business driving using either the standard mileage rate or actual vehicle costs. For 2026 the standard rate is 72.5 cents per mile, up from 70 cents in 2025. Trips to showrooms, vendor pickups, client walkthroughs, and installations all count. Your commute from home to a regular office does not, but if your home is your principal place of business, the drive from there to a job site is deductible.

Whichever method you choose, keep a contemporaneous mileage log with the date, destination, business purpose, and miles. A phone app that logs trips automatically is enough. You generally pick a method the first year you use the car and are limited on switching later, so decide deliberately.

What about software, subscriptions, and a design library?

Design and drafting software (rendering tools, CAD, mood-board and project-management platforms), your accounting and invoicing apps, cloud storage, and website hosting are all deductible in the year you pay for them. Trade association dues, continuing education for CEUs, and subscriptions to design publications or product libraries are deductible too. Licensing or certification fees to keep an existing credential current are deductible; the cost to qualify for a brand new profession is not, so a first-time license can be a startup cost instead.

Can I deduct new equipment like a laptop, camera, or 3D scanner?

Yes. A computer, tablet, camera for portfolio photos, printer for large-format boards, or a room-measuring 3D scanner used for the business is deductible. Items under the $2,500 de minimis safe harbor can be expensed immediately if you have an accounting policy in place. Larger purchases can be written off in full using Section 179 (up to $2,560,000 in 2026) or 100% bonus depreciation, which is permanent for property placed in service on or after January 19, 2025. If a machine is used partly for personal reasons, deduct only the business-use share.

What is the interior design business code for taxes?

On Schedule C, interior design maps to business code 541410, Interior Design Services, which matches the NAICS code for the industry. The code is statistical and does not decide whether an expense is deductible or whether you are an SSTB; it just tells the IRS what kind of business you run. Enter it in box B of Schedule C.

Do I pay self-employment tax as an interior designer?

Yes. On top of income tax, self-employed designers owe self-employment tax of 15.3% on net earnings, which covers Social Security (12.4% up to the $184,500 wage base for 2026) and Medicare (2.9% with no cap, plus 0.9% more above $200,000 single or $250,000 joint). You deduct half of the SE tax as an adjustment to income. Because nobody withholds tax from your design fees, you generally pay quarterly estimated taxes to avoid an underpayment penalty. Setting aside 25% to 30% of profit as you go keeps April from becoming a surprise.

What records do I need to keep, and for how long?

Keep a receipt or invoice for every deduction, plus the vendor invoices behind cost of goods sold and the client invoices that record the resale. The IRS accepts digital copies under Revenue Procedure 97-22, so a clear photo or scanned PDF is as valid as paper. Keep records at least three years from when you file, six years if you underreported income by more than 25%, and seven years if you claim a loss on worthless goods. Because so much design spending runs through vendor and showroom purchases, a clean scan-and-file habit is what turns a shoebox into an audit-proof set of books.

One efficient way to handle the paper: scan every vendor invoice, sample receipt, and showroom order the moment you get it and let a tool pull the vendor, date, and amount into a spreadsheet you can sort by client and project. You can scan receipts for expenses and turn a season of design purchases into a clean ledger, export the whole batch with a receipt to Excel converter, and match everything against your deductions with a receipt scanner built for taxes. When you send vendor orders, keeping them structured in a purchase order system makes cost of goods sold trivial to reconcile at year end. Client-facing paperwork like a letter of agreement or a design contract is easy to send and e-sign online before a project starts, and when tax time comes you can hand a tidy year of categorized transactions straight to your bookkeeper or reconcile it in QuickBooks.

The bottom line for interior designers

A self-employed interior designer can deduct nearly every ordinary cost of the practice: design software and a design library, samples and sample books, a home studio, warehouse and storage, business mileage at 72.5 cents for 2026, equipment, marketing, insurance, and dues. Two things set design apart from other creative businesses. Furnishings you resell are cost of goods sold, deducted when the item ships to the client, so you are taxed only on your markup. And the 20% QBI deduction is usually available because interior design reads as not an SSTB, which only becomes a question above $201,750 single or $403,500 joint for 2026. Track every purchase against its project, keep legible digital receipts, and pay quarterly estimates, and you will keep more of what you earn. When a deduction is a close call, a tax professional is worth the fee.

This article is general information, not tax advice. Tax rules change and your situation is unique, so confirm specifics with a qualified tax professional or the IRS before filing.