Invoicing · Self-employed UK
Invoicing App for Self-Employed UK Trades
Built for sole traders. Send a clean, UK-compliant invoice from your phone the second the job is done — no spreadsheets, no Sunday-night admin, no waiting weeks to be paid.
What you get
- Create invoices in seconds — pre-filled customer details, prior job lines, no retyping.
- Send directly to customers — straight from your phone, with a one-tap payment link.
- Track payments easily — see what's paid, what's outstanding, and what's overdue at a glance.
- No complicated setup — sign up and send your first invoice the same day.
- Works on your phone — designed to be used on site, not chained to a laptop.
Built for sole traders
If you're self-employed — a sole-trader electrician, plumber, cleaner, gardener, or handyman — WrkGenie is built for the way you actually work: on the move, between jobs, with no time for admin.
When you're ready to grow, the same tool also handles quoting, scheduling, and full job management.
What a UK-compliant sole-trader invoice actually needs
As a self-employed sole trader, your invoices must include specific information to be legally valid and to satisfy HMRC requirements. WrkGenie handles all of this automatically:
- Your full name or trading name and address
- A unique sequential invoice number
- The date the invoice is issued and the payment due date
- A description of the work done and the amount charged
- If VAT registered: your VAT number, the VAT rate, and the VAT amount
If you're approaching the £90,000 VAT threshold, WrkGenie's invoice format switches automatically when you register — no need to rebuild your templates. Read the full detail in our invoicing guide for UK sole traders.
Getting paid faster as a self-employed tradesperson
The single biggest factor in how quickly you get paid is how quickly you send the invoice. Invoices sent the same day the job is completed — ideally within the hour, while you're still at the property — get paid on average significantly faster than invoices sent at the end of the week.
WrkGenie is built around this: you complete a job, tap to generate the invoice, and send it in under a minute. The customer gets a payment link they can tap immediately. You can use the free invoice generator for one-off invoices, or WrkGenie's built-in invoicing for jobs that are tracked through the full quote-to-payment workflow.
Invoicing questions from UK sole traders
Do I need to register for VAT as a self-employed tradesperson?
You must register for VAT once your taxable turnover exceeds £90,000 in any 12-month rolling period. Below that threshold, VAT registration is optional. If you are not registered, your invoices should not show a VAT charge. WrkGenie's invoice format adjusts automatically — no VAT fields appear until you update your settings when you register.
What information must a sole trader invoice include?
Your full name or trading name, your address, a unique sequential invoice number, the date issued, the payment due date, a description of the work done, and the total amount due. If you are VAT registered, you must also show your VAT number, the VAT rate applied, and the VAT amount as a separate line. WrkGenie generates all of this automatically on every invoice.
How quickly should I send an invoice after completing a job?
As soon as possible — ideally the same day, while you are still on site or immediately after you leave. Invoices sent the same day the job is completed are paid significantly faster on average than invoices sent days or weeks later. WrkGenie is built around on-site invoicing: mark the job done, generate the invoice, and send it in under a minute.
What payment terms should I use as a self-employed tradesperson?
For domestic customers, 7 or 14 days is standard. For commercial or trade customers, 30 days is common. State the terms clearly on the invoice — for example, 'Payment due within 14 days of invoice date'. For larger jobs, consider requiring a deposit upfront before work begins and staging payments through the project.
What should I do if a customer doesn't pay?
Start with a polite reminder — many late payments are simply oversights. WrkGenie lets you see at a glance which invoices are overdue so you can follow up without digging through emails. If payment is still not received after a second reminder, send a formal letter before action. For amounts under £10,000, small claims court is available in England and Wales without needing a solicitor.
“I built WrkGenie after seeing how much time service businesses waste on admin, spreadsheets, and chasing payments.”
Built for UK electricians, plumbers, cleaners, and mobile service businesses
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