Blind Fitter
Tax & MTD Guide
Allowable expenses, van and tool costs, CIS deductions, home-office, VAT and MTD explained for UK self-employed blind, curtain and shutter fitters.
Estimate your tax as a self-employed blind fitter
Adjust the figures to see your estimated Income Tax and Class 4 National Insurance for the year.
Total turnover before expenses
Under £1,000 we use the trading allowance automatically
Estimated tax bill
£2,452
8.2% effective rate for 2026/27
- Income tax
- £1,886
- Class 4 NI
- £566
Take-home pay
£19,548
after tax, NI and expenses
This is an estimate using HMRC-confirmed rates for 2026/27, not your official tax calculation. TapTax is MTD-compatible, so you can connect to HMRC and file the real figures in a couple of taps.
- A self-employed blind fitter pays Income Tax and National Insurance on profit, which is your fitting income minus allowable expenses such as tools, van costs, PPE and insurance.
- If your fitting income tops £1,000 you must register for Self Assessment; below that the trading allowance covers you and can be deducted instead of expenses if it gives a lower profit.
- Fitting blinds, shutters or awnings as part of a building or fit-out project is construction work, so contractors deduct CIS at 20% (30% if unregistered) from your labour, usually leading to a Self Assessment refund.
- Your biggest deductions are typically the van (mileage or actual costs), power tools and consumables, PPE and public liability insurance, plus a home-office allowance for quoting and admin.
- MTD for Income Tax applies from April 2026 above £50,000 gross, April 2027 above £30,000, and April 2028 above £20,000.
A self-employed blind fitter has one of the cleaner trades to tax on paper and one of the messier ones in practice. You are out in vans, in and out of homes and offices, drilling brackets, hanging made-to-measure roller, Roman, vertical and Venetian blinds, fitting plantation shutters and the occasional awning. The income side is straightforward: you invoice for supply and fit, or labour only. The complications come from where the work sits. Fit directly for a homeowner and it is a plain sole-trader job. Fit as a subcontractor on a builder's project and you are suddenly inside the Construction Industry Scheme with tax already taken off your labour.
This guide covers how your profit is taxed, the specific expenses worth claiming for this trade, how CIS deductions feed into your Self Assessment, National Insurance, VAT and the MTD timetable. Get the van, tools and CIS records straight and the rest follows.
How Tax Works for a Self-Employed Blind Fitter
As a sole trader you pay Income Tax on profit, which is everything you invoice for fitting minus your allowable business costs. For 2026/27 the personal allowance covers the first £12,570, then you pay 20% to £50,270, 40% to £125,140 and 45% above, with the personal allowance tapering away between £100,000 and £125,140 to create an effective 60% band. Class 4 National Insurance is 6% on profit between £12,570 and £50,270 and 2% above, with Class 2 NIC settled through Self Assessment, which protects your State Pension record.
Scottish fitters pay Scottish Income Tax through six bands (19%, 20%, 21%, 42%, 45% and a 48% top rate) and carry an S-prefixed tax code, while National Insurance stays UK-wide. Welsh fitters have a C-coded tax code at rates currently matching the rest of the UK. If you also have a PAYE job, or you came off the tools from an employed role mid-year, your code can be wrong; run it through the tax code checker so you are not over or underpaying through the year.
The Trading Allowance and Starting Out
Plenty of fitters start on the side, doing a few jobs at weekends while still employed. The £1,000 trading allowance is built for that. If your gross fitting income for the year is £1,000 or less, it is tax-free and you do not need to register for Self Assessment. Cross £1,000 and you must register and report the full amount.
Above the threshold you get a yearly choice: deduct the flat £1,000 trading allowance instead of working out actual expenses, or deduct your real costs if they are higher. You cannot do both. For a fitter this almost always means claiming actual expenses, because a van, a kit of power tools and insurance comfortably exceed £1,000. The flat allowance only wins in a first part-year where you borrowed tools and barely spent anything.
CIS: When Tax Is Taken Off Your Labour
This is the part that catches blind fitters out. Installing blinds, shutters or awnings as part of the construction, alteration, repair or fit-out of a building counts as construction operations under the Construction Industry Scheme. So when you subcontract to a builder, shopfitter, joiner or main contractor on a project, that contractor must deduct CIS from the labour element of your invoice and pay it to HMRC on your behalf.
The deduction is 20% if you are registered as a CIS subcontractor, or 30% if you are not. It comes off labour only, not the materials you supply (the blinds, brackets and fixings), and not VAT. Register with HMRC so you are deducted at 20% rather than 30%, it makes a real cash-flow difference across a year. Fitting directly for a private homeowner is outside CIS entirely, because a householder is not a contractor.
- CIS deduction
- Under the Construction Industry Scheme, a contractor deducts money from a subcontractor's labour payment and pays it to HMRC as an advance towards that subcontractor's Income Tax and National Insurance. The rate is 20% for registered subcontractors and 30% for unregistered ones, taken from the labour portion only, never from materials or VAT. The amount deducted is recorded on your CIS payment and deduction statements and is offset against your final tax bill at Self Assessment.
Because CIS deducts a flat 20% from gross labour before any expenses, most fitters who work through contractors have paid too much tax by the year end. You claim it back: total the CIS deductions from your statements, enter them on your Self Assessment, and they offset your actual Income Tax and Class 4 NIC bill, usually producing a refund. Keep every monthly CIS statement, they are your proof of tax already paid. Our CIS subcontractor guide explains the full mechanics, and the CIS tax calculator estimates the refund you are owed.
Allowable Expenses for Blind Fitters
An expense is allowable when it is incurred wholly and exclusively for the business. For a fitter the list is dominated by tools, the van and protective gear.
| Expense | What qualifies | Notes |
|---|---|---|
| Power tools | Cordless and SDS drills, drivers, batteries, chargers, multi-tools | Claimed via the Annual Investment Allowance |
| Hand tools and access | Levels, tape measures, screwdrivers, snips, hop-ups, step ladders, work platform | Replaceable consumable tools are everyday running costs |
| Consumables | Drill bits, blades, plugs, screws, brackets, fixings, batteries, sealant | Fully deductible as used |
| Materials and stock | Made-to-measure blinds, shutters, tracks, poles you supply | Deduct against the supply-and-fit income |
| Van running costs | Fuel, insurance, road tax, servicing, MOT, repairs, or simplified mileage | Pick mileage or actual costs and stick with it |
| PPE | Safety goggles, gloves, knee pads, dust mask, branded workwear, safety boots | Protective and branded only, not everyday clothes |
| Insurance | Public liability and tool/van cover | Essential and fully allowable |
| Phone and admin | Business share of mobile, quoting and invoicing software, stationery | Apportion private use out |
| Home-office | Flat-rate or actual share of household costs for quotes, ordering and books | Most fitters do admin from home |
| Professional fees | Accountancy, bookkeeping, trade association membership | Fully deductible |
The Van: Mileage or Actual Costs
The van is usually the second-biggest deduction after stock. You have two methods. Simplified mileage pays a flat 45p per business mile for the first 10,000 miles in the year and 25p after that, covering fuel, insurance, servicing, repairs and depreciation in one figure, you just log your business miles between jobs. Or you claim the actual business proportion of every van cost plus capital allowances on the van itself. A fitter racking up heavy daily mileage in a dedicated work van often gets a bigger deduction from actual costs; a lighter-use fitter usually finds mileage simpler and just as good. You must keep to one method per vehicle once you choose it. Either way, travel from home to your first job and back from your last is normal business travel for a fitter with no fixed workplace, so keep a mileage log.
Tools and Capital Allowances
Bigger tool purchases, a new cordless drill set, an SDS drill, a laser level, are capital items but you can normally write the full cost off in the year of purchase through the Annual Investment Allowance. Smaller consumable tools and the bits, blades and fixings you get through are simply running costs. Keep receipts for everything; HMRC expects a fitter to spend on tools and PPE, but only if you can show it.
What You Cannot Claim
The private share of your van, phone and broadband must be excluded. Everyday clothing is never allowable, even sturdy trousers, but branded workwear and genuine PPE are. Parking fines and speeding tickets are never deductible. And the cost of getting set up before you actually start trading is pre-trading expenditure, claimed once you begin, not lost.
Worked Example: A Blind Fitter on £42,000
Take a fitter doing a mix of domestic supply-and-fit and some subcontract labour for a local shopfitter, with £42,000 of income for the year, of which £16,000 was CIS labour with £3,200 already deducted at 20%.
Income: £42,000 (domestic supply-and-fit £26,000, CIS subcontract labour £16,000)
Allowable expenses:
- Stock and materials for supply-and-fit jobs: £9,000
- Power tools and consumables (AIA and running costs): £1,400
- Van costs via actual-cost method: £4,200
- PPE, workwear and public liability insurance: £900
- Phone, software and home-office: £700
- Accountancy and trade membership: £500
- Total expenses: £16,700
Taxable profit: £42,000 minus £16,700 = £25,300
Income Tax: £25,300 minus £12,570 = £12,730 at 20% = £2,546
Class 4 NIC: £12,730 at 6% = £764
Tax and NIC due: £3,310. But £3,200 of CIS was already deducted at source, so the fitter actually owes only about £110 once the CIS is offset, instead of writing a large cheque in January. Run your own figures through the sole trader tax calculator to sanity-check, and the CIS calculator if most of your work is subcontract labour.
For a blind fitter the tax refund usually hides in the CIS statements. Keep every monthly deduction statement and every tool and van receipt, and the January return turns into a rebate rather than a bill.
VAT for Blind Fitters
You must register for VAT once your taxable turnover passes £90,000 in any rolling 12-month period. A fitter doing labour-only domestic work rarely gets near it, but supply-and-fit changes the maths, because the price of the blinds and shutters themselves counts towards turnover. A busy fitter installing made-to-measure stock across many jobs can cross £90,000 faster than expected, so watch the rolling 12-month total, not just the tax-year figure. If most of your work is commercial fit-outs for VAT-registered businesses, voluntary registration can pay, because they reclaim the VAT you charge and you reclaim VAT on tools, the van and stock. Domestic-only fitters should weigh it carefully, as adding 20% to a homeowner's price either dents your margin or your competitiveness. Note that CIS contractors may also operate the VAT domestic reverse charge on construction services, which changes how you invoice them.
MTD for Income Tax: What Changes for Fitters
Making Tax Digital for Income Tax Self Assessment replaces the annual return with quarterly digital updates and a year-end finalisation. The thresholds are based on gross income, not profit:
- April 2026: Combined trading and property income over £50,000
- April 2027: Over £30,000
- April 2028: Over £20,000
For a fitter the gross test matters. Supply-and-fit turnover and CIS labour count gross, before deductions, so a fitter clearing modest profit can still be over a threshold on turnover. Instead of bagging up a shoebox of receipts each January, you record income and costs digitally as they happen and send HMRC a summary each quarter through compatible software. The upside is that capturing CIS statements, tool receipts and van mileage continuously makes the refund easier to claim and the year-end far less painful. Our MTD for sole traders guide walks through the quarterly rhythm in practice.
Common Mistakes Blind Fitters Make
Not registering for CIS and being deducted at 30%. Registering drops the deduction to 20%, a real cash-flow gain across the year.
Losing CIS statements. Without them you cannot prove the tax already paid, and you risk leaving a refund unclaimed.
Recording CIS income net of the deduction. Report the gross labour and show the CIS deduction separately, otherwise your figures will not reconcile.
Mixing van methods. Once you choose mileage or actual costs for a vehicle, you must keep to it; switching mid-stream is not allowed.
Forgetting it is gross turnover for MTD and VAT. Supply-and-fit and CIS labour are tested gross, so a fitter on slim margins can still trip a threshold.
People also ask
Quarterly expenses under MTD: the £90,000 rule
If your annual business turnover is £90,000 or less, HMRC lets you report a single consolidated expenses total in each Making Tax Digital quarterly update instead of breaking expenses down into itemised categories. Most self-employed blind fitter businesses are under this threshold, so a quarterly update can be as simple as two figures: total income and total expenses. You still need to keep digital records of each individual expense - the relaxation only changes how much detail goes into the quarterly update itself.
Frequently asked questions
Calculators for blind fitters
Helpful guides
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