You can spec a room down to the last cushion trim, then open Xero and feel completely lost. That is the gap most Irish design studios live in. The work is creative, but the money behind it is messy: fees billed by stage, supplier invoices arriving weeks after a client pays a deposit, samples bought out of pocket, and a 23% VAT layer sitting over the top.
This guide walks through how accounting for interior designers actually works in an Irish context. We cover the design-and-procurement mixed model, trade discount versus markup, deposits and progress billing, sample and showroom expenses, VAT on goods versus services, FF&E procurement, and how to tell whether a project actually made money.
What makes the accounting different in Ireland?
An interior design business is a hybrid. You sell time (concepts, drawings, site visits) and you sell things (sofas, lighting, fabrics, FF&E). The two have different cost profiles, different cash flow patterns, and different VAT treatments.
That hybrid is where most of the pain comes from. A solicitor sells time. A retailer sells goods. An interior designer does both, often inside one engagement, often on the same invoice. Add long lead times, supplier deposits and mid-build change orders, and you have one of the trickier service businesses to keep clean books for.
A few things make the accounting particularly distinct in Ireland:
- Project-based revenue with staged billing rather than predictable monthly income.
- Significant vendor deposits paid out before client cash lands.
- Mixed supplies (services plus goods) on the same engagement, with different VAT treatments.
- High volume of supplier invoices that need to be allocated to the right job, not just the right month.
- Irish-specific issues: Revenue VAT rules, possible RCT exposure when contractors are engaged, and CRO obligations if you trade through a limited company.
Get the structure right early and the rest gets easier. Get it wrong, and you end up reconstructing twelve months of supplier paperwork the week before year-end accounts are due.
How should you structure the books for a design-and-procurement mixed model?
The biggest decision is whether you act as an agent or a principal when procuring goods. It changes how revenue is reported, how VAT is charged, and how margin shows up in your reports.
As principal, you buy the sofa, the lamp, the rug, and you sell them on. Full sale value sits in your turnover. Supplier cost sits in cost of sales. You carry the risk if goods are damaged or rejected. This is the model most Irish studios operate.
As agent, you arrange the purchase on behalf of the client and charge a commission. Only your fee sits in turnover. Pick a position and document it in your engagement letter. Inconsistent treatment across projects causes problems at year-end and on VAT returns.
A chart of accounts that supports this mixed model should at minimum separate:
- Design fees and consultation income (services).
- Procurement income from FF&E and goods (where you act as principal).
- Procurement commissions (where you act as agent).
- Recharged expenses (true pass-throughs at cost).
- Cost of sales by project, split between goods, contractors and subcontractor labour.
- Studio overheads (rent, software, insurance, marketing).
This is also the level of detail that lets a tool like Xero report project margin instead of just total turnover. Without it, your profit and loss tells you the studio is profitable; it does not tell you which jobs paid for the bad ones.
How should you account for trade discount versus markup?
This is where many studios quietly lose money. Trade discount and markup look similar from the outside. They behave very differently in the books.
Trade discount is the reduction a supplier gives you off the retail price. If a chair retails at €1,000 and you get a 30% trade discount, you pay €700. That €700 is your true cost. The €1,000 retail figure should not appear anywhere in your records; it is a benchmark, not a transaction.
Markup is what you add on top of your cost when you resell to the client. If you sell that same chair for €1,150, your markup is €450 on a cost of €700, roughly 64% on cost or about 39% on the sale price. Both numbers are useful but they describe different things.
The mistake is recording the retail price as revenue, the trade price as cost, and treating the discount as if it were your margin. That overstates both income and cost of sales. Record what you actually paid, what you actually charged, and let the difference speak for itself.
How does revenue recognition work on a project-based design firm?
Most Irish studios bill in stages. A typical project might run concept, design development, procurement, installation, snagging. Each stage triggers an invoice. The question is when the income belongs in your accounts.
Cash accounting recognises income when the client pays. Accrual recognises it when the work is done or the right to be paid has crystallised. For VAT purposes most Irish design firms operate on an invoice basis, which means the VAT clock starts when you raise the document, not when the money arrives.
|
Revenue type |
When to recognise |
How to record it |
|
Initial deposit on signing |
When received |
Liability (deferred income), not revenue. Move to revenue as work is performed. |
|
Stage payment on design completion |
When the design stage is delivered |
Revenue, allocated to the project at the contract milestone. |
|
Procurement (you as principal) |
When goods are delivered or risk passes to client |
Revenue at full sale value; supplier cost recognised in cost of sales. |
|
Procurement (you as agent) |
When the commission is earned |
Only the commission as revenue. Supplier amount is not yours. |
|
Change order |
When approved in writing by the client |
Additional revenue line on the project. Update the budget so margin stays honest. |
|
Retention on installation |
When installation is complete and accepted |
Revenue, even if payment lags. Track separately in debtors. |
The point of a table like this is to force a decision on every income line. Without one, deposits get mistaken for profit, retentions get forgotten, and the year-end picture is wrong before you start.
How should you record client deposits and progress billing?
Treat a deposit as money you owe back until the work is done. Not as profit. Not as cash you can spend freely. It sits on the balance sheet as deferred income and moves to the profit and loss account only as the work is performed.
This matters for three reasons. First, it stops you overstating profit in a month where money lands but nothing has been delivered. Second, it gives a clean picture of what you would owe if a project were cancelled tomorrow. Third, it is the only honest way to read your management accounts month to month.
A clean progress billing process looks roughly like this:
- Engagement letter sets out the fee structure, stages, percentages, and what triggers each invoice.
- Deposit invoice raised on signing. Money received goes to deferred income.
- Stage invoices raised when each milestone is delivered. Deferred income unwinds; revenue is recognised.
- Procurement charges raised when goods are ordered, with supplier prepayments ringfenced against that project.
- Final invoice on installation, including any retention amount.
Strong contracts and clear stage definitions matter as much as the bookkeeping. Vague milestones are why so many firms end up arguing about whether stage three has been completed.
How is VAT charged on design services versus goods?
Two different supplies. Two different VAT lines. One invoice, often.
Services supplied by an Irish design business to an Irish client are generally subject to VAT at the standard rate, currently 23%. Goods supplied to that same client are also typically at 23%, but place-of-supply rules and reduced rates get messy fast when you cross borders or sell to non-business clients in other EU states. Revenue publishes the current detail and you should check it for any unusual transaction.
If you import goods from the UK after Brexit, you are dealing with customs declarations, possible import VAT, and freight charges that need to land in the right place. EU acquisitions get a reverse charge treatment in most cases. It is wrong to assume the rules are the same as they were five years ago.
A practical VAT routine for an interior design business:
- Register for VAT when turnover requires it; the goods threshold and the services threshold differ, and a mixed business has to watch both. Current thresholds are on the Revenue website, and we cover them in our VAT return guide.
- Apply VAT on deposits at the point you raise the document, not when the work is done. Many designers get this wrong.
- Separate the VAT on services from the VAT on goods on each invoice line, even if the rate is the same. Audit trails matter.
- Recover VAT on legitimate inputs (samples, software, studio rent), not personal items.
- File your returns on time through ROS and reconcile to your accounting software every period.
If you operate close to the threshold, get advice before you cross it rather than after. Voluntary registration sometimes makes sense; sometimes it does not, depending on your client mix.
How should FF&E procurement be accounted for?
FF&E (furniture, fixtures and equipment) is where most of the cash moves on a residential or boutique commercial job. It is also where the most mistakes happen.
Each FF&E item should be tied to a specific project from the moment the purchase order is raised. Track it through ordering, supplier prepayment, manufacture, delivery and sign-off. If you carry stock for longer than a few weeks, you have inventory on the balance sheet and need to value it at year-end.
Supplier prepayments paid before the client has paid you are a cash flow trap. You can be technically profitable on a project and still be in overdraft because you have €40,000 sitting with suppliers and only €25,000 collected from the client. This is the most common reason an otherwise healthy firm runs out of cash mid-project. Our cash flow guide covers the 13-week view that prevents most of these surprises.
A workable FF&E pattern:
- Raise a purchase order for every item, linked to a project code.
- Record supplier prepayments against that project, not as cost of sales yet.
- When goods are delivered and risk passes, move the cost out of prepayments into cost of sales for that project.
- Match the client invoice for those items to the same project and stage.
- Review open POs weekly. Cancelled orders that still show as committed will distort your project margin reporting.
How should samples, showroom and studio expenses be handled?
Samples are a grey area. Fabric swatches, paint pots, tile samples, finishes for client meetings. Some are bought for a specific job and recharged. Some are general studio resource. Some sit in a sample library forever.
The clean approach: if a sample is for a specific client, code it to that project. If it is for general studio use, code it to a studio expense category. Lumping all samples into one general account makes project margin meaningless.
Showroom and studio costs (rent, utilities, insurance, software subscriptions, marketing, photography, professional memberships such as IIID) are overhead. They get deducted from gross profit to give you net profit. The distinction is the only way to see whether your projects pay for the studio you run.
Working from home? You can claim a portion of household expenses if the studio is genuinely a place of business. Rules are stricter for limited companies than sole traders, and Revenue expects a consistent basis (floor area, hours of use). The Citizens Information guide covers the basics.
How do you actually measure project profitability?
You measure it the same way the project management software you already use tracks a build schedule: by tracking actual against budget, at every stage, on every job.
The four numbers that matter on every interior design project:
- Project revenue. Total amounts charged to the client, including design fees, procurement and variations.
- Direct project costs. FF&E, contractor invoices, subcontractor labour, project-specific samples, freight.
- Internal time cost. Hours your team spent on the project, valued at a sensible internal rate. Sole traders often skip this. Do not. It is the single biggest hidden cost on any design project.
- Project gross margin. Revenue minus direct costs minus time cost. This is what tells you whether the job was worth doing.
Reviewing profitability mid-build, not just at the end, is the difference between adjusting fees on the next job and absorbing a loss in silence. A monthly cycle of reconcile, allocate, review, adjust. It is the consistency that matters.
Specialist design software such as Studio Designer can sit alongside Xero to handle project management and bookkeeping in one workflow. For most Irish firms in the early years, Xero plus disciplined project coding is enough; specialist tools become useful as project volume grows.
When should you move from sole trader to limited company?
There is no single number that triggers the move. There are signals. Profits consistently above what you need to draw personally, employing staff or regular subcontractors, taking on commercial clients who prefer to contract with a company, or planning to scale beyond a single principal designer.
Incorporation brings benefits: limited liability (with caveats), more flexible tax planning, and credibility with larger clients. It also brings real admin: payroll, CRO filings, director responsibilities, and a formal year-end threshold to be aware of. Our piece on sole trader or company goes into the practical comparison. Once you do incorporate, how you pay yourself becomes its own decision.
The simplest test: would you sleep better with a company sitting between you and a six-figure procurement contract gone wrong? If yes, talk to your accountant about timing.
Frequently asked questions
Do interior designers need to register for VAT in Ireland?
Probably yes, once you cross the relevant threshold for services or goods. The thresholds differ and a design-and-procurement mixed business has to watch both. Voluntary registration is also an option below the threshold and sometimes makes sense if most of your clients are VAT-registered businesses. The Revenue guidance on who should register is the authoritative source.
How do I record client deposits without overstating profit?
Treat the deposit as deferred income (a liability) when received. Move it to revenue only as the corresponding work is delivered. This keeps your management accounts honest and prevents the classic mistake of celebrating a profitable month that is actually just a project not yet started.
What is the best design software for an interior design business?
For most Irish studios, cloud accounting like Xero handles the bookkeeping side well, particularly when paired with a receipt-capture tool and bank feeds. If your project volume is high and procurement is complex, dedicated design software (Studio Designer, Houzz Pro, Design Manager) sits on top to handle purchase orders, client proposals and workflow. Do not over-tool early.
Can I claim home office expenses if I run my design business from home?
Yes, on a reasonable apportioned basis. The exact mechanics differ between sole traders and limited companies, and you need to document your basis (floor area, time use). If you also use the space for sample storage and client meetings, the case for a meaningful claim gets stronger, but keep the supporting records.
How do I know if my projects are actually profitable?
Track revenue, direct costs and time cost against every project, every month. If you only look at year-end profit, you will never know which projects subsidised the bad ones. Project-level reporting through your accounting and project management stack is the only honest answer; everything else is a guess.
Work with an accountant who understands design firms
Accounting for interior designers is not impossible. It is just unusual enough that generic templates and a non-specialist bookkeeper tend to miss things. Project-based revenue, procurement margins, recharged expenses, VAT on mixed supplies, and FF&E cash flow all need a system, not improvisation.
If you want a clean setup, accurate project profitability reporting and confidence that VAT and Revenue obligations are handled properly, get in touch today. We can review your bookkeeping, structure your chart of accounts to fit a design firm model, and give you the monthly reporting that answers the question every owner wants answered: did that job make money? Book a consultation or visit our contact page.
Disclaimer: This guide is for general information purposes only and does not constitute tax advice. Tax rules and thresholds can change. Always consult a qualified accountant or tax adviser for advice specific to your circumstances.


