Tree Surgeons and Arborists — Business and Tax Guide

Tree surgery is physically demanding, highly skilled, and — when done well — incredibly satisfying work. Whether you're felling, pruning, hedge trimming, or grinding stumps, you're running a business that comes with its own set of financial considerations. From the cost of chainsaws and chippers to insurance premiums that make your eyes water, understanding your tax position can save you thousands of pounds each year.

This guide is written specifically for self-employed tree surgeons and arborists in the UK, covering the 2025/26 tax year. We'll walk through registration, expenses, the Construction Industry Scheme, and how to keep HMRC happy without losing sleep.

Registering Your Business

If you're working as a self-employed tree surgeon, you need to register with HMRC as soon as you start trading. This is straightforward — you can do it online, and you'll receive your UTR (Unique Taxpayer Reference) number within a couple of weeks.

You'll also want to think about whether to trade as a sole trader or set up a limited company. Most tree surgeons starting out begin as sole traders because it's simpler and cheaper to set up. You can always incorporate later if your business grows and the tax benefits make sense.

Beyond HMRC registration, tree surgeons typically need:

• Public liability insurance — most clients and contractors will require this, often with a minimum of £5 million cover
• Professional indemnity insurance — particularly if you're providing consultancy or survey work
• Employers' liability insurance — if you take on any staff, even casual labour
• Appropriate qualifications — NPTC/City & Guilds certificates for chainsaw work, and ideally membership of a professional body like the Arboricultural Association

None of these are optional in practice, even if some aren't strictly legally required for sole traders. The good news is that they're all tax-deductible.

Understanding Your Tax Bill

For 2025/26, here's how your tax is calculated:

Your taxable profit is your total business income minus your allowable expenses. You then pay:

• No income tax on the first £12,570 (your personal allowance)
• 20% (basic rate) on profits between £12,571 and £50,270
• 40% (higher rate) on profits above £50,270

On top of income tax, you'll pay National Insurance:

• Class 2 NI: £3.45 per week
• Class 4 NI: 6% on profits between £12,570 and £50,270

For example, if your turnover is £55,000 and you have £15,000 in expenses, your taxable profit is £40,000. You'd pay roughly £5,486 in income tax plus around £1,880 in National Insurance — a total of about £7,366. Without claiming those expenses, your tax bill would be significantly higher. That's why keeping proper records matters so much. You can estimate your own bill using our sole trader tax guide.

Equipment and Vehicle Expenses

Tree surgery is an equipment-intensive trade, and the costs can be substantial. Here's what you can claim:

Chainsaws and power tools. All professional-grade equipment — chainsaws, pole pruners, hedge trimmers, leaf blowers, stump grinders — is deductible. For items over a certain value, you'll use capital allowances, but the Annual Investment Allowance (currently £1 million) means you can almost certainly claim the full cost in the year of purchase.

Vehicles. Your work vehicle is likely one of your biggest expenses. You have two options for claiming vehicle costs:

1. Mileage method: Claim 45p per mile for the first 10,000 business miles and 25p per mile after that. This is simpler and works well if you use a personal vehicle for work. See our mileage guide for more detail.
2. Actual costs method: Claim a business proportion of fuel, insurance, servicing, road tax, and finance costs. If you have a dedicated work vehicle (like a pickup or tipper truck), this method often gives a higher deduction.

You can't switch between methods for the same vehicle, so choose wisely.

Chippers, cranes, and hired plant. If you hire specialist equipment for particular jobs, the hire cost is fully deductible. If you own a chipper or other large plant, you'll claim capital allowances on the purchase cost.

PPE and workwear. Chainsaw trousers, helmets with visors and ear defenders, climbing harnesses, steel-toe boots, and other safety equipment are all deductible. Unlike general clothing, specialist PPE that you wouldn't wear outside of work is clearly an allowable expense.

Ropes and climbing gear. Climbing ropes, slings, carabiners, throwlines, saddles, and other arboricultural climbing equipment are fully deductible.

Fuel and consumables. Two-stroke oil, chain oil, replacement chains, sharpening files, and other consumables add up over the year and are all claimable.

The Construction Industry Scheme (CIS)

Here's something many tree surgeons don't realise: if you do work for a contractor in the construction industry, the Construction Industry Scheme (CIS) may apply. This is relevant if you're doing site clearance, landscaping, or tree work as part of a construction project.

Under CIS, the contractor deducts tax from your payments at source — either 20% if you're registered or 30% if you're not. These deductions count towards your annual tax bill, so you're not paying twice. But if the contractor over-deducts (which happens regularly), you'll get a refund when you file your Self Assessment return.

If you do any work for construction companies, developers, or main contractors, it's worth registering for CIS. It's free, and it means the lower deduction rate applies. You'll need your UTR number and National Insurance number to register.

Not all tree surgery work falls under CIS — private domestic clients aren't covered, and neither is work for non-construction businesses. It's only when you're subcontracting to someone who is themselves a contractor in the construction industry.

Insurance, Training, and Professional Costs

The costs of running a tree surgery business go well beyond equipment. Here are the other expenses you shouldn't forget to claim:

Insurance premiums. Public liability, employers' liability, professional indemnity, and vehicle insurance are all significant annual costs for tree surgeons — and all fully deductible.

Training and CPD. Ongoing training courses (first aid at work, emergency tree work, MEWP operation, pesticide application certificates) are deductible. Initial qualifications to enter the profession are not, but everything after that generally is.

Professional memberships. Arboricultural Association membership, ISA membership, and other professional body fees are deductible.

Waste disposal. Tipping fees at green waste sites, skip hire, and waste carrier licence costs are all legitimate expenses.

Advertising and marketing. Your website, Google Ads, leaflets, vehicle signwriting, and social media advertising are all deductible.

Accounting and software. The cost of accounting software, bookkeeping services, and your accountant's fees are deductible. Tools like Accounted can help you track all these expenses in real time, so you're not scrambling to find receipts in January.

Phone and broadband. If you use your personal phone for business, you can claim a reasonable proportion of the cost. If you have a dedicated business phone, the full cost is deductible.

For the full list of what sole traders can claim, take a look at our complete expenses guide.

VAT Registration

You must register for VAT if your taxable turnover exceeds £90,000 in any rolling 12-month period. Many established tree surgery businesses will be near or above this threshold.

If you're VAT registered, you charge VAT at 20% on top of your invoices and then pay this to HMRC (minus any VAT you've paid on business purchases). This can actually work in your favour if you're buying expensive equipment, because you reclaim the VAT on those purchases.

For tree surgeons working primarily with domestic clients, being VAT registered can make your quotes less competitive (since private individuals can't reclaim VAT). Some tree surgeons manage this by being transparent with clients about their pricing or by keeping turnover just below the threshold. However, deliberately splitting your business to avoid VAT registration is something HMRC takes a very dim view of, so tread carefully.

If you're approaching the threshold, our VAT registration guide explains your options and obligations in detail.

Seasonal Cash Flow and Tax Planning

Tree surgery is often seasonal, with the busiest period running from autumn through to early spring (outside the bird nesting season). This means your income can be lumpy — earning well in some months and much less in others.

Smart cash flow management is essential:

Set aside tax money from every job. Don't wait until you have a quiet month to start saving for your tax bill. Put 25–30% of every payment received into a separate account immediately.

Plan equipment purchases strategically. If you know you need a new chipper or chainsaw, buying before 5 April means you can claim the expense against the current tax year's profits. This is particularly useful if you've had a strong year and want to reduce your tax bill.

Consider payments on account. If your tax bill is over £1,000, HMRC will ask you to make payments on account — essentially advance payments towards next year's bill. These are due on 31 January and 31 July. Make sure you budget for these, as they can catch new business owners off guard.

Keep digital records. With Making Tax Digital for Income Tax coming in from April 2026 for sole traders earning over £50,000, now is the time to get your records into a digital system. Penny, the AI bookkeeping assistant in Accounted, can help you categorise expenses and track income without spending hours on admin.

Related Reading

• Candle Makers — Home Business Tax Guide

• Tax Guide for Life Coaches and Business Coaches

• Zoo and Farm Experience Businesses — Visitor Attraction Tax Guide

• CIS for Subcontractors — Complete Guide

• How to Claim Mileage When Self-Employed

• Sole Trader Expenses — The Complete List

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