Claiming Tax Relief on Tools UK 2026 — Capital Allowances, Flat Rate Expenses & CIS Refunds

Your Status Decides How You Claim

Before anything else, work out which category you fall into, because the mechanism is completely different for each:

• Self-employed / sole trader: you claim tools as a business expense or a capital allowance on your Self Assessment tax return.
• Employed tradesperson (PAYE, buying your own tools): you claim a flat rate expense through your tax code, or actual costs via a tax return.
• CIS subcontractor: you're self-employed for tax, so tool costs reduce your taxable profit — and because tax is deducted at source under CIS, that often turns into a refund.

A limited company director is different again — the company buys the tools and claims the cost (and capital allowances) against corporation tax. Most of this guide focuses on sole traders, employees and CIS subbies, who together make up the bulk of working trades.

Self-Employed: Revenue Expenses vs Capital Allowances

If you're a sole trader, the cost of your tools comes off your profit in one of two ways, and which one depends on the nature of the item rather than the price tag.

Small tools and consumables (revenue expenses)

Hand tools, drill bits, blades, abrasives, fixings, sealants, gloves and anything short-lived or regularly replaced are treated as allowable business expenses. You simply add the cost to your other running expenses on the tax return and it's deducted from your profit in full, in the year you bought it. A box of consumables, a £40 set of spanners or a replacement jigsaw blade all fall here.

Larger, longer-lasting equipment (capital allowances)

Equipment that lasts and that you use across multiple jobs — power tools, test equipment, a generator, ladders, a tile saw, a pipe-freezing kit, diagnostic gear — is "plant and machinery". The cost of these items is claimed through capital allowances rather than as a straight expense.

The headline relief here is the Annual Investment Allowance (AIA), which lets you deduct 100% of the cost of qualifying plant and machinery in the year you buy it, up to £1 million a year. For practically every sole trader in the trades, your annual tool spend is nowhere near that limit, so the AIA means your power tools and equipment are effectively fully deducted in year one — exactly like a revenue expense.

This is why the revenue-versus-capital distinction rarely changes the year-one outcome for a working tradesperson: thanks to the AIA, both a £30 blade and a £900 SDS drill come off your profit in full the same year. The distinction matters more for accounting accuracy and for very large purchases, but for day-to-day kit the practical result is the same — you get full relief now.

Worked Example: Self-Employed Electrician

Say you're a self-employed electrician and over the tax year you spend £3,000 on tools and equipment — a new SDS drill, a multifunction tester, cable rods, a step ladder, hand tools and various consumables.

All £3,000 is deductible: the consumables and small tools as expenses, the power tools and tester as plant and machinery covered by the AIA. That £3,000 comes straight off your taxable profit. If you're a basic-rate taxpayer (20% income tax plus Class 4 National Insurance at 6% on profits within the main band), the relief is worth roughly £780 in reduced tax and NIC — about 26% of what you spent. If your profits push you into the higher-rate band (40%), the same £3,000 of tools saves you around £1,200.

The exact figure depends on your total profit, your tax band and the NIC thresholds in force, so treat this as an illustration rather than a promise — but the principle is solid: a meaningful chunk of every pound you spend on genuine work tools comes back to you through reduced tax.

Employed Tradespeople: Flat Rate Expenses

If you're employed under PAYE but you have to buy and maintain your own tools — common for mechanics, vehicle technicians, some electricians and engineers — you can't use capital allowances in the normal way, but HMRC gives you two options.

Option 1: the flat rate expense allowance

HMRC publishes a list of industry-agreed flat rate expense amounts (also called flat rate deductions) for the upkeep and replacement of tools and specialist workwear, broken down by trade and occupation. You don't need receipts to claim the flat rate — the figure is agreed for your job type. For many skilled trades and mechanics the agreed amount sits in the region of £120 a year, with other occupations set higher or lower.

You claim it once and HMRC adjusts your tax code so you pay less tax going forward, then keeps it running year after year unless your circumstances change. As a deduction from taxable income, a £120 flat rate is worth around £24 a year to a basic-rate payer and £48 to a higher-rate payer. Always check HMRC's current flat rate expense list for the exact figure for your occupation, as the amounts are reviewed periodically.

Option 2: claim your actual costs

If you spend far more than the flat rate — for example a mechanic dropping thousands on a tool chest and diagnostic kit — you can instead claim your actual costs, including capital allowances on the tools, by completing a Self Assessment tax return or writing to HMRC. This requires you to keep receipts, but on a big tooling year it can be worth dramatically more than the flat rate.

Crucially, you can also backdate a claim for up to four previous tax years if you've never claimed before. A mechanic who has bought their own tools for years without realising they could claim can often recover relief on four years of spend in one go. Don't claim the flat rate and actual costs for the same items — pick whichever is more valuable.

CIS Subcontractors: Tools and Your Refund

Under the Construction Industry Scheme, contractors deduct tax from your payments — usually 20% if you're registered, 30% if you're not — and pass it to HMRC before you ever see the money. That deduction is based on your labour, before any of your costs are taken into account.

Because a CIS subcontractor is self-employed, the same rules as any sole trader apply: your tool and equipment costs reduce your taxable profit on your Self Assessment return — small tools as expenses, larger equipment via the AIA. When you file, HMRC compares the tax that was deducted at source against the tax actually due on your profit after expenses.

Since the CIS deductions were calculated without any allowance for your tools, materials, van running costs, insurance and other expenses, the tax taken off is very often more than you actually owe — which is why a large share of CIS subbies receive a refund after filing. Claiming every legitimate tool and equipment cost directly increases that refund. Keeping a tidy record of tool purchases through the year is the single easiest way to make sure your CIS refund is as big as it should be.

What Else You Can Claim Alongside Tools

Tools rarely travel alone. Several related costs are allowable in the same way, so don't leave them off your claim:

• Tool insurance: cover for theft from your van or site is an allowable business expense for the self-employed.
• PPE and protective clothing: safety boots, hard hats, hi-vis, gloves, goggles, ear defenders and respirators are all claimable.
• Branded workwear and uniform: work clothing carrying your business logo, and protective overalls, qualify — but ordinary everyday clothing you could wear outside work does not.
• Tool storage: van racking, site boxes, lockable tool chests and secure storage used for the business.
• Repairs and servicing: the cost of maintaining, calibrating or repairing your tools and test equipment.

Records and Receipts: What HMRC Will and Won't Accept

Whichever route you use, the rule is simple: keep your receipts. For self-employed and CIS subbies, you must keep records of your business income and expenses for at least five years after the 31 January Self Assessment deadline for that tax year. Employees claiming actual costs need receipts too; only the flat rate expense can be claimed without them.

HMRC will accept the cost of tools and equipment bought wholly and exclusively for the business. What it won't accept is private use dressed up as a business cost. If an item is used partly for personal reasons — say a power tool you also use heavily on your own home — you can only claim the business proportion, and you need a sensible, defensible basis for the split. Dual-purpose spending with no apportionment is the classic thing that gets disallowed in an enquiry.

Good habits that keep you safe: photograph or scan receipts the day you buy, pay for tools from a business account where possible, and log each purchase against the job or period it relates to. Knowing which jobs and which marketing actually bring in paid work — rather than just guessing — is the other half of running a tighter business; a system like Trade2Base that ties enquiries through to paid jobs makes both your bookkeeping and your growth decisions a lot less of a shot in the dark.

Quick Reference: How to Claim Tool Tax Relief by Status

Don't Leave Money on the Table

Tool tax relief is one of the most straightforward wins in a trade business, yet thousands of tradespeople either never claim or claim less than they're entitled to — employees who've never asked about the flat rate, CIS subbies who don't total up their tool spend, sole traders who forget the AIA covers their big-ticket kit. Keep every receipt, claim the right way for your status, and review whether you can backdate.

None of this is a substitute for professional advice on your own numbers. Before you file, check HMRC's current flat rate expense list for your occupation and speak to an accountant if your situation is at all complex — for example mixed employment and self-employment, large capital purchases, or any private use of equipment. The cost of an accountant is itself an allowable expense for the self-employed, and good advice usually pays for itself several times over.