AI Invoice Generator.
Invoicing for builders.
A week of graft into an invoice in a minute: describe the job stage by stage and every line prices itself, VAT exact.
No signup, no card needed to try it.
Say it like you would say it
"Invoice Thompson 2400 for the bathroom refit: strip out 400, first fix 800, tiling 900, waste removal 300, plus VAT"
That is the whole job. The AI writes the lines, deterministic code does every sum in exact pence, and the invoice is ready to send with your logo on it.
The site runs to plan. The paperwork does not.
Built to spec, invoiced eventually
Building work is staged, quoted and re-quoted - and the money only moves when the paperwork does.
Stage invoices for every job
Deposit, first fix, second fix, completion - each stage needs its own invoice, and each one is an evening you do not have.
The quote that became the job
You priced it once in the quote. Retyping the same lines into an invoice is the same work twice - and where mistakes creep in.
Retention money and slow payers
Main contractors pay slowly and remember rarely. Chasing is a job in itself, and it is nobody's favourite.
Instant professional templates
Send something that looks like you charge properly
An invoice that looks thrown together gets treated like one. Pick from 26 designs - these are the real ones, not pictures of them - and switch at any point, before or after you have written it. Your logo and colours go on top.
Luxury
Tradesman
Luxury Gold
Why your accountant can relax
The AI writes. It does not count.
Language models are good with words and unreliable with arithmetic, so DocMason only lets them do the first part. Every figure on a document you send is worked out by ordinary code, in exact pence, the same way every time.
It is the difference between a tool you check afterwards and one you can send without reading twice.
- VAT, discounts and totals calculated in code, never by the AI
- Money held in exact pence, so rounding cannot drift
- Every email sent on your behalf is stored in full, so you can read exactly what went out and to whom
- Your data hosted in the EU, never used to train AI models
FAQs
Questions from builders, answered straight
The free tier, the maths, and how invoicing fits the way builders actually work. Everything else is on the full page.
Something else on your mind? Ask a human.
Does it handle CIS deductions?
Not yet, honestly. DocMason does not calculate CIS deductions - if most of your work is under CIS and you need it computed automatically, we are not the right fit today. Everything else here - staged invoices, VAT in exact pence, quote-to-invoice in one click, polite chasing - is live.
Can I turn my quote into the invoice?
Yes - one click converts an accepted quote into a ready-to-send invoice: every line, the customer and your design carry over, linked back to the original. Nothing retyped, no second version of the truth.
Is it really free?
Yes. Build and preview an invoice with no account at all, and create a free account when you want the PDF. The free plan includes 3 invoices and 3 quotes every month with all 26 designs - no card needed. Starter at 9.99 GBP a month makes them unlimited.
Does the AI do the maths?
No, and that is deliberate. The AI reads what you typed; plain deterministic code computes every total, discount and VAT figure in exact pence. AI is good at language and bad at arithmetic, so it only does the first one.
Want the whole picture? See everything the invoice generator does.
Your next invoice takes a minute
3 free invoices a month. Describe the job like you would say it, and see for yourself.