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AI invoicing tools for plumbers in the UK

Invoicing for plumbers usually means stage payments, materials passed on at cost plus markup, and chasing late payers. Accounting apps send invoices, chase them automatically and match payments from your bank feed. Several now use AI to read receipts and suggest categories, which cuts time at the VAT return.

Prices checked on each provider's own page on 14 October 2026. Prices change, so the source link is next to each one.

The options, with prices

Tool	Price and free plan	UK notes and source
Tradify Job management for tradespeople: quotes, scheduling, timesheets and invoices.	Lite: £34 per user a month. Pro: £37. Plus: £44. Optional Instant Website £10 a month; text messages £0.10 each. 14-day free trial. No free plan; 14-day free trial with all features.	UK pricing in pounds, UK phone support. Source, checked 14 October 2026
Xero Cloud accounting for invoices, bank feeds, VAT and payroll, with AI-assisted features.	Ignite: £18 a month. Grow: £39. Comprehensive: £55. Ultimate: £70 (all excl. VAT). Intro offers run on the pricing page. Payroll £1.50 per person. No free plan; a free trial and introductory discounts are offered.	UK pricing in pounds; Making Tax Digital compatible. Source, checked 14 October 2026
QuickBooks Cloud accounting with invoicing, expenses and VAT, plus Intuit Intelligence AI features (some in beta).	UK plans from £10 a month, with others at £16, £38 and £56 a month; introductory discounts are offered. 30-day free trial. No free plan; 30-day free trial.	UK pricing in pounds. Source, checked 14 October 2026
FreeAgent UK accounting software for sole traders, partnerships and small companies.	£33 a month or £330 a year (excl. VAT), with introductory discounts. Free if you keep a business account with NatWest, RBS or Ulster Bank, or use Mettle (conditions apply). Free for eligible NatWest, RBS, Ulster Bank and Mettle customers; otherwise a 30-day free trial.	UK company, pounds. Source, checked 14 October 2026
Zoho Books Accounting software with a free plan for very small businesses and paid UK plans.	Free: £0. Standard: £12 a month (£10 billed annually). Professional: £24 (£20). Premium: £30 (£25). Per organisation. Free plan for sole traders and micro businesses.	UK pricing in pounds. Source, checked 14 October 2026
Tide A business account app with invoicing, expense cards and accounting integrations.	Free plan with no plan fee. Smart: £12.49 a month. Pro: £27.49 a month. Max: £69.99 a month. Essential tools for getting started with no monthly plan fee (transaction limits vary by plan).	UK; Tide is authorised by the FCA as an e-money institution. Source, checked 14 October 2026

What to check before you choose

Making Tax Digital: whether the app files VAT returns (and, from April 2026, Income Tax updates for sole traders over the threshold) directly with HMRC.
CIS deductions and the construction reverse charge, if you subcontract or work for main contractors.
Whether invoices can take card or bank payments by link.
Introductory discounts: note the full price after the offer ends.

A prompt to start with

Paste this into ChatGPT or Claude, or use it as the instructions for an AI receptionist, filling in the parts in brackets:

Write a polite but firm payment reminder for invoice [number] for £[amount], which was due on [date], from a plumbing and heating business to a homeowner. Mention the payment terms on the original quote, give the bank details and a payment link, and ask for payment within 7 days. Keep it under 120 words.

Free tools for plumbers

Price a job with the quote and VAT calculator (20%, 5%, 0% and reverse charge), or work out your day rate. Comparing the two big job management apps? Read Tradify vs Jobber.

Questions

What's the cheapest invoicing option for plumbers?

Zoho Books has a free plan, and Tide's business account has a free plan with invoicing. FreeAgent is free with a NatWest, RBS or Ulster Bank business account, or with Mettle (conditions apply). Prices were checked on 14 October 2026.

Are these prices in pounds?

Not all of them. Where a provider only publishes US dollar prices, we show dollars, so check the checkout price in pounds before you sign up.

Do you get paid if I sign up?

Some links may become affiliate links in future, and we'll label them when they do. It doesn't change what we list or how. See how we make money.

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