Tax Guide for Self-Employed Architects

The Accounted Business Team·14 February 2026·6 min read

Designing Buildings and Managing Your Tax: A Guide for Self-Employed Architects

Self-employed architects have a unique blend of creative and technical skills, and the tax position reflects that complexity. Between expensive software licences, professional registration fees, site visit travel, and the cost of maintaining a home studio, there is a lot to keep track of.

This guide covers the allowable expenses, professional obligations, and practical tax tips for self-employed architects in the 2025/26 tax year.

Professional Registration Fees

ARB Registration

Registration with the Architects Registration Board is a legal requirement to use the title "architect" in the UK. The annual ARB registration fee is a fully deductible business expense. You cannot practise without it.

RIBA Membership

Membership of the Royal Institute of British Architects is not legally required but is common in the profession. RIBA chartered membership fees, along with any specialist group or regional fees, are deductible as professional membership costs. This includes RIBA Journal subscriptions if they are part of your membership package.

Other Professional Bodies

Fees for other relevant bodies — such as the Association for Project Safety (APS), the Royal Town Planning Institute (RTPI) if you hold dual qualifications, or local architectural associations — are also claimable.

Software

Architecture relies heavily on specialist software, and the costs are significant.

Design and Drafting Software

AutoCAD, Revit, ArchiCAD, Rhino, SketchUp Pro, Vectorworks, and other CAD/BIM software subscriptions or licences are fully deductible. Whether you pay monthly, annually, or buy a perpetual licence, the cost is claimable. Perpetual licences for expensive software may be treated as capital expenditure and claimed through the Annual Investment Allowance.

Rendering and Visualisation

V-Ray, Lumion, Enscape, Twinmotion, and similar rendering software are deductible. These tools are integral to producing client presentations and planning submissions.

Adobe Creative Suite

Photoshop, Illustrator, InDesign, and other Adobe tools used for presentation drawings, portfolio work, and marketing materials are claimable.

Office and Project Management

Microsoft 365 or Google Workspace, project management tools (Asana, Monday, Trello), time-tracking software, and accounting software are all deductible.

Specialist Tools

Planning portal submission fees, Building Regulations compliance checking tools, structural calculation software, and energy assessment tools (SAP calculations, SBEM) are claimable if you pay for them yourself.

Hardware

Computers, monitors, drawing tablets, plotters, printers, scanners, and other hardware qualify for capital allowances under the Annual Investment Allowance. Architecture demands high-specification computers for BIM and rendering work, so these can be substantial claims.

Peripherals such as external hard drives, graphics tablets, mice, keyboards, and monitor arms are also claimable.

Professional Indemnity Insurance

PI insurance is effectively mandatory for practising architects. Most clients and contracts require it, and the ARB Code of Conduct expects adequate insurance arrangements. The premium is fully deductible. Policies typically range from a few hundred pounds for sole practitioners to several thousand for larger practices, depending on turnover and the type of work undertaken.

Public liability insurance, employer's liability insurance (if you have staff), and office contents insurance are also claimable.

Model Materials and Printing

Physical models remain an important part of architectural practice, particularly for competitions and client presentations. The cost of model-making materials — card, foam board, balsa wood, 3D printing filament, laser cutting — is deductible. Large-format printing, plotting, and binding for planning submissions and client packs are also claimable.

Site Visit Travel

Mileage

Travel to client meetings, site visits, planning offices, contractor meetings, and project sites counts as business mileage. Use HMRC's mileage rates — 45p per mile for the first 10,000 business miles, 25p after that — or claim actual vehicle costs. Keep a log of every business journey.

Public Transport

Train tickets, bus fares, and taxi costs for business travel are fully deductible. If you hold an annual railcard that you use primarily for business travel, a reasonable proportion of the cost is claimable.

Overnight Travel

If a project requires overnight stays — a site in another city, a multi-day design review — accommodation and reasonable meal costs are claimable.

Continuing Professional Development

The ARB requires architects to maintain their competence, and RIBA chartered members must complete a minimum of 35 hours of CPD per year. The cost of meeting these requirements is deductible, including CPD courses, seminars, and workshops, architectural lectures and events, RIBA CPD providers and online learning, books, journals, and technical publications, and study trips (where the primary purpose is professional development).

Home Studio Costs

Many self-employed architects work from a home studio. You can claim a proportion of your household running costs.

HMRC Flat Rate

The simplest approach is HMRC's flat rate: £10 per month for 25-50 hours worked from home, £18 for 51-100 hours, or £26 for 101 or more hours per month.

Actual Costs

Alternatively, calculate the proportion of your home used for business. If your studio occupies one room in a four-room house, and you use it exclusively for work, you could claim 25% of your rent or mortgage interest, council tax, electricity, gas, water, and broadband. The actual cost method usually gives a larger deduction but requires more detailed records.

Capital Gains Warning

If part of your home is used exclusively for business, that portion may not qualify for Private Residence Relief when you sell the property. Many architects avoid this by ensuring the studio also has some domestic use — even if minimal.

Hiring Subcontractors and Freelancers

If you engage other architects, technicians, structural engineers, or visualisers on a freelance basis, their fees are deductible. Ensure they are genuinely self-employed and keep their invoices. If you hire employees, you will need to register for PAYE.

VAT

Architectural services are standard-rated for VAT. If your taxable turnover exceeds £90,000 in a rolling 12-month period, you must register. Many architects register voluntarily below this threshold because their clients (developers, businesses) can reclaim the VAT, making it cost-neutral for them while allowing you to reclaim VAT on your expenses.

Note that the domestic reverse charge for construction services may apply to some architectural work if it falls within the scope of CIS. This is a complex area — take advice if you provide services to contractors in the construction supply chain.

National Insurance

Class 2 NI is £3.45 per week (if profits exceed £6,725). Class 4 NI is 6% on profits between £12,570 and £50,270, then 2% above that. Both are collected through Self Assessment.

Record-Keeping

Keep all invoices, fee proposals, contracts, expense receipts, ARB and RIBA receipts, CPD records, insurance certificates, mileage logs, and bank statements. HMRC requires records for at least five years after the filing deadline.

Design Your Tax Affairs as Carefully as Your Buildings

Self-employed architecture involves managing a complex web of professional fees, software costs, and project expenses. Accounted brings it all together — connecting to your bank, categorising every transaction, and keeping your records organised and MTD-ready. Penny, your AI bookkeeper, knows the difference between a software subscription and a model-making purchase, and keeps a running total of your deductible expenses. Start your free trial with Accounted and let Penny handle the numbers while you focus on the designs.

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