Going Self-Employed as a Tradesman: The Complete UK Checklist (2026)
Most tradespeople who go self-employed wish they’d done it sooner. The ones who hesitate usually aren’t held back by skill – they’re held back by not knowing the practical steps. What do I register? What insurance do I need? When do I tell HMRC? What about VAT?
This is the checklist that answers all of that. Work through it in order and you’ll have the foundations of a properly set-up trades business, legally compliant and ready to trade.
Before You Hand Your Notice In
Don’t leave your job first and figure the rest out later. Do as much of this as possible while you still have a salary coming in.
Financial preparation
- [ ] Build a cash buffer – aim for 3 months of personal expenses minimum. Self-employment income is irregular, especially at first. You need runway
- [ ] Understand your tax position – as a sole trader, you’ll pay income tax and National Insurance through Self Assessment, not PAYE. Your first tax bill won’t arrive until January after your first full trading year – but it will include a “payment on account” for the following year, which catches a lot of new self-employed people off guard
- [ ] Open a separate bank account – not legally required, but practically essential. Mixing personal and business money makes your accounts a nightmare. Most banks offer free business current accounts
- [ ] Speak to an accountant – even one consultation before you start will save you more than it costs. They’ll advise on sole trader vs limited company, what you can expense, and how to set up your books
Equipment and tools
- [ ] Inventory your tools – know what you have and what you need. Going self-employed often means needing more tools than you had as an employee
- [ ] Assess your vehicle – is your current vehicle suitable? Does it need signage? Is it insured for business use?
- [ ] Consider finance options – tools, vans and equipment can often be financed, which preserves your cash buffer in the early months
The Legal Essentials
1. Register with HMRC
You must register as self-employed with HMRC by 5 October in the tax year after you start trading. So if you start trading in July 2026, you must register by 5 October 2026. Registering late risks a penalty.
How to do it:
1. Go to gov.uk and search “register self-employed”
2. You’ll need a Government Gateway account (create one if you don’t have it)
3. Complete the registration – takes about 20 minutes
4. HMRC will send your Unique Taxpayer Reference (UTR) by post – arrives within 10 days
Your UTR is a 10-digit number used on all your tax returns. Keep it safe.
Tax rates for 2025/26:
– Personal Allowance: £12,570 (no tax below this)
– Basic rate: 20% on profits £12,571-£50,270
– Higher rate: 40% on profits £50,271-£125,140
– Class 4 NI: 6% on profits £12,570-£50,270, 2% above
The golden rule: put aside 25-30% of everything you earn from day one. Set up a separate savings pot labelled “Tax”. This removes the sting of your first Self Assessment bill.
2. Insurance – What You Actually Need
| Insurance | Required? | Why |
|---|---|---|
| Public Liability | Not legally required but essential | Covers injury or damage to third parties – most customers and all commercial clients will ask for it |
| Tools Insurance | No | Covers replacement if stolen or damaged – worth it if your tools are worth more than £1,000 |
| Van Insurance (business use) | Yes | Standard personal car insurance does not cover commercial use |
| Employers Liability | Only if you take on staff | Legally required the moment you employ anyone, even temporarily |
| Income Protection | No | Covers you if you can’t work through illness – often overlooked but important for sole traders |
Public liability cover of £1-2 million starts at around £50-100/year for most trades. There is no excuse for not having it.
3. Certifications and Scheme Membership
Depending on your trade, you may need to be registered with a competent person scheme before you can legally carry out certain work:
- Gas engineers – Gas Safe Register. Mandatory. You cannot legally work on gas appliances without it
- Electricians – NICEIC, NAPIT or similar Part P scheme required for notifiable domestic electrical work
- Oil heating – OFTEC registration required
- Builders/general trades – No mandatory scheme, but FMB membership adds credibility
Check your trade body’s requirements before you start trading. Carrying out notifiable work without the right registration risks fines and invalidates your customers’ insurance.
Setting Up Your Business Properly
Trading Name and Identity
You don’t need to register a business name as a sole trader – you can trade under your own name. But having a trading name (e.g. “Smith Electrical Services”) looks more professional and helps with marketing.
Things to decide:
– [ ] Choose a trading name (check it’s not already taken – search Companies House and Google)
– [ ] Get a logo designed – Canva works well for simple logos, or use Fiverr for something more polished
– [ ] Get branded workwear made – polo shirts, hi-vis, hoodies
– [ ] Order business cards
– [ ] Set up a business email address – yourname@yourbusiness.co.uk looks more professional than Gmail
Van and Equipment
- [ ] Ensure van insurance is updated to include business use and tools in transit
- [ ] Get van signage made – magnetic signs are cheap and flexible if you also use the van personally
- [ ] Check tool insurance covers all equipment at replacement value
Quoting and Invoicing
You need a system for quoting and invoicing from day one. A professional quote sent quickly wins more jobs than the same quote sent slowly. A proper invoice gets you paid faster than a scribbled piece of paper.
Minimum requirements:
– [ ] Quote template with your business name, contact details, job description, price and payment terms
– [ ] Invoice template with the same, plus invoice number and bank details
– [ ] A way to track which invoices are paid and which are outstanding
Your First 90 Days
With the admin done, your first priority is filling the diary. Here’s what to focus on:
Week 1
– Message every contact in your phone to let them know you’re trading
– Set up your Google Business Profile
– Join one lead generation platform
Month 1
– Complete your first 5 jobs
– Ask every customer for a Google review
– Start building a simple portfolio of photos
Month 3
– Review your pricing – are you covering your costs?
– Ask your accountant to check you’re recording expenses correctly
– Look at whether you need a website yet
Common Mistakes to Avoid
Not keeping records from day one – every receipt, every invoice, every mileage log. HMRC can ask to see 5 years of records. Start as you mean to go on.
Underestimating your tax bill – the payment on account system means your second year’s tax bill is double what new traders expect. Put money aside every month.
Not having written quotes – verbal agreements are almost impossible to enforce if a customer disputes the price or scope of work.
Working without insurance – it only takes one incident to wipe out everything you’ve built.
Going it entirely alone – a good accountant, a decent solicitor on retainer for contract questions, and a mentor in your trade are worth far more than their cost.
Frequently Asked Questions
Do I need to register with HMRC before I start trading?
You should register as soon as you start trading. The legal deadline is 5 October in the tax year after you start, but registering early means you know your UTR number and can set up your records properly from the start.
Sole trader or limited company – which should I choose?
For most new starters in the trades, sole trader is the right call – it’s simpler, cheaper to administer, and you can always convert later. A limited company becomes more tax-efficient once your profits consistently exceed around £30,000-35,000, but comes with more paperwork and accountancy costs. Speak to an accountant – they’ll give you a straight answer based on your numbers.
Do I need a business bank account?
Not legally, but practically yes. Mixing personal and business finances makes your accounts a mess and your tax return a headache. Most high street banks offer free business current accounts for the first 12-18 months.
What can I claim as a business expense?
As a sole trader you can deduct legitimate business expenses from your profits before calculating tax. This includes: tools and equipment, van costs (fuel, insurance, servicing, finance), workwear, phone and data (business proportion), trade memberships, accountancy fees, marketing costs, and materials used on jobs. Keep every receipt. If in doubt, ask your accountant – don’t guess.
What is Making Tax Digital and does it affect me?
Making Tax Digital for Income Tax (MTD for ITSA) is being rolled out from April 2026 for sole traders with income over £50,000, and from April 2027 for those earning over £30,000. It requires quarterly digital submissions to HMRC rather than an annual Self Assessment. If you’re in this income bracket, speak to your accountant now – they’ll need to set you up with compatible software.
When do I need to register for VAT?
You must register for VAT when your taxable turnover exceeds £90,000 in a 12-month rolling period (the threshold as of 2026). You can also register voluntarily below this threshold – which makes sense if most of your customers are VAT-registered businesses who can reclaim it, and allows you to reclaim VAT on your own purchases.
Do I need public liability insurance before I start trading?
Technically no, but practically yes. Many customers will ask for it before letting you on site. Commercial clients and property managers will require it. And one accident without cover could end your business entirely. It costs very little relative to the protection it provides – sort it before your first job.
Kwowta is a quoting and invoice app built for trades businesses. Send professional quotes from your phone in minutes. Join the beta free for 6 months at kwowta.com.
