Invoicing Software for UK Plumbers: Fast, Cheap, Mobile-First
Invoicr is a free invoicing app built for UK plumbers, electricians, and tradespeople that lets you send invoices and get paid bank-to-bank, saving you £8.50 per £500 invoice compared to card processors.
Why Invoicr Works for Plumbing Businesses
Most invoicing software forces you to use Stripe or Square, which take 2.5% of every payment. Invoicr instead offers bank-to-bank payments via UK open banking. On a £500 job invoice, you pay around £4 instead of £12.50. You're not choosing between cheap invoicing or cheap payments - you get both. The app runs on your phone, so you can invoice a customer from their kitchen before you leave the job. Free tier covers 5 invoices per month and 3 customers, which works for sole traders just starting out.
What About Parts and Materials Tracking?
Invoicr focuses on what plumbers actually need: fast invoicing, low-cost payments, and reminder automation. It doesn't include parts inventory or materials management. If you're tracking stock or managing a warehouse, you'd want a separate tool for that. But for the core job - itemising work on an invoice (labour, call-out, materials list) and getting paid quickly - Invoicr handles it. You add line items (pipe, fittings, labour hours) to each invoice, set your rate, and send. Most plumbers don't need inventory software; they need to stop leaving money on the table with card processing fees.
Mobile Invoicing Built for Tradespeople
Invoicr is iOS and Android native, built for plumbers, electricians, decorators, and handymen who work on site. Create an invoice on your phone, add a photo if you want, and send it via WhatsApp or email. Pro tier (£9.99/month or £79.99/year) adds unlimited invoices, automatic payment reminders, WhatsApp delivery, and quotes. Business tier (£19.99/month or £179.99/year) adds 5 team seats, full VAT and CIS tax compliance, and direct accountant export. As of June 2026, UK self-employed tradespeople are increasingly moving to bank-to-bank payments to avoid the hidden cost of card transaction fees.
Compliance and Tax Reporting for UK Plumbers
Invoicr is built specifically for UK tax rules. Free and Pro tiers handle basic invoicing and payment tracking. Business tier includes CIS (Construction Industry Scheme) compliance and VAT reporting, which matter if you're registered or working with contractors. You can export all data to your accountant in a format they'll recognise. This beats generic invoicing software that makes you manually track UK-specific tax obligations.
How Payment Works (No Hidden Card Fees)
When you send an invoice, clients see a 'Pay Now' button. If they choose bank-to-bank, you get the money via open banking without waiting for a card processor. Invoicr charges a flat low fee per transaction, not a percentage. If a client prefers card payment, they can still use it, but you pay standard card fees on that transaction only. The result: most of your invoices cost you 0.8% instead of 2.5%, which adds up to hundreds of pounds per year for a busy plumber.
Getting Started with Invoicr
Download the app, sign up with your email, and you're live on the Free tier immediately. Add up to 3 customers and send 5 invoices per month with no credit card required. When you're ready to scale (more jobs, more clients, team members), upgrade to Pro or Business. Most UK plumbers find the Free tier works while they're testing the app, then move to Pro once they're invoicing more than 5 jobs a month.
Start invoicing your plumbing jobs for free today, with no card fees.
Frequently asked questions
Does Invoicr track parts inventory?
No. Invoicr is built for invoicing and payment collection, not stock management. You can list parts and materials as line items on an invoice, but you can't track inventory levels or reorder stock from the app.
How much do I save on payment fees with Invoicr?
Bank-to-bank payments cost around £0.80 per £500 invoice (0.16%), versus £12.50 with a card processor (2.5%). On 40 jobs a month at £500 each, you save around £480 per year.
Is Invoicr free for plumbers?
Yes. The Free tier covers 5 invoices per month and 3 customers at no cost. Pro tier (£9.99/month) adds unlimited invoices, WhatsApp delivery, and reminders. Business tier (£19.99/month) adds VAT/CIS compliance and team seats.
Can I send invoices via WhatsApp?
Yes, on Pro tier and above. Clients receive the invoice link and 'Pay Now' button directly in WhatsApp, so they don't need email.
Do my clients need to sign up to pay?
No. Clients receive a secure payment link and can pay bank-to-bank or by card without creating an account. They see a client portal with their invoice history and balance.
Is Invoicr available in the US or just the UK?
Invoicr is built for UK self-employed tradespeople and uses UK open banking and VAT/CIS rules. It's not available for US businesses.