You will get an n8n invoice and receipt data extraction workflow with verification
Project details
Most invoice automations work fine until they meet a document they cannot read properly. Then they guess. A plausible-looking number lands in your accounts and nobody notices for months.
This one does not guess.
You send me a sample of your real documents. I build one n8n workflow that pulls the fields you need - supplier, date, net, VAT, gross and line items - then re-checks its own arithmetic in code. Net plus VAT must equal gross. Line items must sum to the stated total. Dates must parse. Anything failing those checks, or not present on the document, is flagged for review with the field named. It is never filled in with a likely-looking value.
Flagged rows go to a review queue, so a human clears exceptions rather than proof-reading everything.
You get documented JSON for your own n8n, a test suite that runs the checks against your samples, and a one-page runbook: what it does, what breaks it, how to fix it.
You host it. You own it. No lock-in, no subscription to me.
I am UK-based, in your timezone. No accuracy percentage appears here, because the only honest number is the one measured on your documents - and you will see it, per field, before we call it finished.
This one does not guess.
You send me a sample of your real documents. I build one n8n workflow that pulls the fields you need - supplier, date, net, VAT, gross and line items - then re-checks its own arithmetic in code. Net plus VAT must equal gross. Line items must sum to the stated total. Dates must parse. Anything failing those checks, or not present on the document, is flagged for review with the field named. It is never filled in with a likely-looking value.
Flagged rows go to a review queue, so a human clears exceptions rather than proof-reading everything.
You get documented JSON for your own n8n, a test suite that runs the checks against your samples, and a one-page runbook: what it does, what breaks it, how to fix it.
You host it. You own it. No lock-in, no subscription to me.
I am UK-based, in your timezone. No accuracy percentage appears here, because the only honest number is the one measured on your documents - and you will see it, per field, before we call it finished.
Programming Languages
JavaScriptWhat's included
| Service Tiers |
Starter
$100
|
Standard
$200
|
Advanced
$350
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 7 days |
Number of Revisions | 2 | 2 | 2 |
Install Script | - | - | - |
Test Script | |||
Task Automation |
Optional add-ons
You can add these on the next page.
Additional Revision
+$25Frequently asked questions
About Ben
Automation Developer | n8n, invoice & document data extraction
South Woodham Ferrers, United Kingdom - 10:12 am local time
Most of my work is in n8n: document and invoice data extraction, workflow automation, integrations, and internal tools. I came up through the trades, so I know what the admin actually looks like in an installation, maintenance or property business, and how little time there is for it.
What makes mine different is accuracy discipline. Plenty of AI automation will hand you a confident answer and never mention the moments it was guessing — annoying on a quote, expensive on a VAT figure, because a wrong number that looks right doesn't get checked by anybody. Mine re-does the arithmetic in ordinary code after the model has read the document. If the totals don't reconcile, the date won't parse, or the supplier name isn't there, it says so and flags the document for review rather than inventing a plausible value.
Everything is delivered on your own systems, under your accounts and API keys, with a written runbook — a table of symptoms and what to check first — so you own it and any competent developer can pick it up.
I'm building my client base, so instead of a client list I'll show you working code: four complete workflows covered by a 156-assertion test suite that runs under four timezones, public and yours to run before you hire me.
Based in the UK, working remotely.
Steps for completing your project
After purchasing the project, send requirements so Ben can start the project.
Delivery time starts when Ben receives requirements from you.
Ben works on your project following the steps below.
Revisions may occur after the delivery date.
Schema definition
I read your sample documents and write down exactly which fields are being extracted, what each one must look like to be considered valid, and which arithmetic relationships must hold.
Build extraction and verification
I build the extraction in n8n and the verification checks in code alongside it, so every extracted figure is tested rather than trusted.