Most consultants claim the obvious expenses. Travel, a laptop, maybe their accountant’s fees. But the list of what HMRC allows goes considerably further than that, and every missed deduction is money you’ve handed over unnecessarily.
At APH, we’ve been working with consultants across the UK since 2010, and the same expenses come up time and again as ones people didn’t know they could claim.
Here are 12 consultant tax deductions worth knowing about.
A quick note before we start
To claim an expense as a tax deduction, it must be “wholly and exclusively” for business purposes. This is HMRC’s standard test, and it applies to everything on this list.
If an expense has a personal element as well as a business one, you may only be able to claim the business proportion.
Keep records of everything. Receipts, invoices, and bank statements should be held for at least six years.
1. Home office costs
If you work from home, you can claim a proportion of your household bills as a business expense.
This includes:
- Electricity and heating
- Broadband and phone bills
- Council tax (proportionate to the space used)
You can either calculate the exact business proportion or use HMRC’s simplified flat rate, which is based on the number of hours you work from home each month.
For many consultants working predominantly from home, this is one of the most valuable deductions available.
2. Professional indemnity insurance
PI insurance is a significant overhead for most consultants, and it is fully deductible as a business expense.
The same applies to any other business insurance you hold, including public liability insurance if relevant to your work.
3. Accountancy and professional fees
The cost of your accountant is itself tax-deductible. So are any legal fees incurred for business purposes, such as contract reviews or debt recovery.
In other words, getting the right professional support actually costs you less than the headline fee suggests.
If you’d like to talk through what APH could do for your consultancy, book a free consultation call here.
4. Travel and accommodation
Business travel is deductible, but there are rules worth understanding.
You can claim for:
- Train, bus, and taxi fares for business journeys
- Mileage if you use your own vehicle (at HMRC’s approved rates)
- Parking costs
- Hotel stays and subsistence when working away from home
The key distinction is that travel to a permanent place of work is not claimable. Travel to client sites, temporary workplaces, and business meetings is.
Commuting to a client site you attend every day on a long term basis may eventually lose its deductible status under the 24 month rule, so it is worth taking advice if your working pattern is consistent.
5. Equipment and technology
Laptops, monitors, keyboards, phones, and any other equipment used for your consultancy are deductible.
If an item is used partly for personal purposes, only the business proportion can be claimed.
Software subscriptions used for your work, whether project management tools, design software, or specialist platforms, are also deductible.
6. Training and professional development
Courses, workshops, and qualifications that maintain or update your existing skills are deductible.
The important distinction is that training to acquire a new skill, rather than develop an existing one, may not qualify.
So a project management consultant claiming for an advanced PM course is on solid ground. The same consultant claiming for a course in an entirely unrelated discipline would need to think more carefully.
7. Professional subscriptions and memberships
Annual membership fees for professional bodies relevant to your consultancy are deductible, provided HMRC approves the organisation.
If your membership is a practical requirement of your work, or significantly enhances your professional standing in your field, it is worth discussing with your accountant.
8. Marketing and business development
Costs associated with promoting your consultancy are fully deductible. This includes:
- Website design, hosting, and maintenance
- Advertising costs
- Business cards and printed materials
- LinkedIn Premium or other professional platform subscriptions used for business development
Many consultants overlook marketing costs entirely, particularly smaller recurring subscriptions that add up considerably over a year.
9. Office supplies and stationery
Stationery, postage, printing costs, and other day to day office supplies are all deductible.
Small individually, but worth capturing consistently across a full tax year.
10. Pension contributions
If you operate as a sole trader, personal pension contributions attract tax relief, effectively reducing your overall tax bill.
If you operate through a limited company, employer pension contributions made by the company are a particularly tax efficient way to extract money from the business.
This is an area where specialist advice can make a meaningful difference to your long term financial position. Speak to us to find out more.
11. Bank charges and interest
Business bank account fees and any interest charged on business loans or overdrafts are deductible.
If you use a personal account for business purposes, only the charges attributable to business transactions can be claimed, which is one of many reasons a dedicated business account makes sense.
12. Subcontractor and freelancer costs
If you bring in other people to help deliver your consultancy work, their fees are a deductible business expense.
This applies whether you use freelancers, subcontractors, or specialist consultants to support a project.
Keep clear records of payments and ensure you have proper contracts in place, particularly if you are operating through a limited company.
What about IR35?
It is worth noting that if you are working inside IR35, the rules around deductible expenses change significantly.
Most of the deductions above apply to consultants operating outside IR35, either as sole traders or through a limited company in a genuinely self employed capacity.
If you are unsure of your IR35 status, or how it affects your ability to claim expenses, this is exactly the kind of question a specialist accountant can help you answer clearly.
Find out more about how APH supports IT consultants and contractors here.
A note on limited company consultants
Some of the deductions above work slightly differently if you operate through a limited company rather than as a sole trader.
Expenses are claimed against the company’s profits rather than your personal income. Corporation tax relief applies rather than income tax relief. And some costs, such as pension contributions, can be structured in particularly tax efficient ways through a limited company.
Getting the structure right from the start makes a significant difference to how much of your income you actually keep.
Need help making sure you are claiming everything?
A good accountant does not just file your returns. They make sure you are not leaving money on the table year after year.
At APH, we work with consultants across the UK, providing specialist accounting support with fixed monthly fees and no jargon.
Book a free consultation call today and find out what you could be claiming.