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Real case: an accounting firm that's giving up typing in invoices

A 6-page bank statement and an invoice, read and checked in 43.6 seconds. Here's how I built it for one specific accounting firm, using their real documents: the problem, the solution and the measured results.

An accounting firm · BookkeepingIn real-world trial

The challenge: everything was typed by hand

How they worked

Every invoice for every company in their client list, and every transaction on every bank statement, was typed by hand into a3asesor.

What was essential

Maximum reliability: this is their clients' accounting, so every amount had to arrive checked and assigned to the right company.

What stayed the same

Their software. They still use a3asesor, as always: nobody has had to learn anything new.

What I built for them

Four steps, each one checking the work of the one before: only what's correct moves forward.

Each balance has to be the previous one plus the amount. Whatever doesn't chain up is set aside.

  1. The document comes in

    Every company and every document type (issued invoices, received invoices or statements) has its own destination, so it's always clear whose paperwork it is.

  2. It gets read

    The AI reads the document page by page. If a page is rotated, it straightens it out before reading it.

  3. It gets checked

    That the net amount and the VAT add up to the total, that the invoice isn't already registered, and, on statements, that the balances chain from one transaction to the next.

  4. The file comes out, and they import it

    SUENLACE.DAT for invoices and Norma 43 for a3asesor Bank. The firm keeps control: the file is prepared and ready, and they import it whenever they choose, without giving anyone access to their software.

What gets reviewed, and why

Nothing doubtful is accepted as correct: it's set aside as «review by hand» with the reason written down, and the firm resolves it in a minute.

Inbox · Review by hand3 reasons

A hard-to-read scan

A stamp over the total, a crooked scan, or one that's too faint. The reason tells you what to do, and it's usually enough to scan it again.

A judgement call the firm makes

Personal income tax withholdings and invoices with several VAT rates: these are read correctly, but which account each one goes to is up to the firm. Once it's configured, they go through on their own.

An amount that doesn't add up, or a duplicate invoice

Caught before it reaches the accounts: the lines don't add up to the total, or that invoice was already registered. A person decides, with the reason laid out in front of them.

The results, so far

Measured with the firm's real documents, not examples.

Reading a real bank statementMeasured on 17 September 2026
43.6 sto read a 6-page bank statement and an invoice
75 of 77statement lines matched to the cent
Where it stands today

Running with real documents, in its supervised trial: every file is checked before it's imported. It moves to production as soon as each company's configuration is finalised.

How to get the most out of it

  • One invoice per scan: that way each document is read and filed separately.
  • Each document, sent to its own company's destination: the system files it where it's dropped, just like a letter follows the address on the envelope.
  • Anything not read with complete certainty goes to «review by hand»: no doubtful data ever enters the accounts on its own.

Does your firm still type things in too?

Typing in invoices eats up the hours you could spend advising clients, and every amount typed in is a chance to get it wrong. What works here adapts to any other firm using a3asesor, and the hard part (reading, checking and preparing the files) is already built and tested with real documents.

All that's needed, for each company, is its code and its accounts in the software, plus some real documents for the trial. No a3asesor passwords are needed: your accounting stays in your hands. I build it, adjust it with your documents, and make sure it keeps working.

I'll walk you through it in 30 minutes

If your firm also types in every invoice, we'll cover it in a free 30-minute call, and send you the quote afterwards.