Client invoices from the national e-invoicing system reach the firm without a cost description. The system proposes the description and the posting with its basis, and the accountant approves.
Automation, paid once
from €3,000 net
Test on your process: €0
You pay 50% after acceptance
How much does AI for an accounting firm cost, and when does it pay back?
Short answer
AI for an accounting firm costs from €3,000 net. In our scenario it pays back in 1 month. Today, describing 3,000 invoices by hand costs €3,490 a month. With the system, the same work costs €536. An accountant approves every posting. Tax interpretations stay with the accountant. The test on your process is free.
Statistics
Invoices, accounting and AI: statistics 2025
18 bn
According to the European Commission (2023), around 18 billion invoices are issued in the EU every year.
According to the European Commission (2025), the move to e-invoicing will cut administrative and compliance costs for EU traders by over €4.1 billion a year.
The team gets back about 85 hours of work a month, or 11 working days, and the company €35,452 a year. We count after the time a person spends checking and after the model cost.
3,000 × 2 min = 100 h × €34.90 = €3,490 a month. With the system, a person checks the output in 15% of the old time (€524) and the model costs €12. That leaves €536. The saving is €2,954 a month, so €3,000 pays back in 1 month.
Assumptions: 2 minutes to describe and post an invoice and checking in 15% of the old time are our assumptions. €34.90 an hour is the EU average hourly labour cost for 2025 according to Eurostat, for companies with 10 or more employees. Model cost: €0.0040 per invoice, measured in our invoice coding system (0.004514 USD), at the ECB rate of 1.1205 USD per euro on 22 October 2026.
foap.com customer service: 95% of replies are sent automatically.
Users from several countries write to foap.com, in several languages. The system reads the entire conversation and the terms of that person, and then sends a response in that person's language. Questions about money and exceptions go to the team with a ready draft, so they have to check and send them.
the system sends the answers itself, without human typing
95%
the system sends the answers itself, without human typing
time from the arrival of the e-mail to the ready response (median)
30 s
time from the arrival of the e-mail to the ready response (median)
e-mails that require a response receive a ready-made draft
100%
e-mails that require a response receive a ready-made draft
less work for every 1000 answers (estimate)
47 h
less work for every 1000 answers (estimate)
Data from foap.com production, October 20-21, 2026. Estimate: 3 minutes for handwritten response.
It proposes the account and the cost centre, checks the invoice against the order and holds anything missing before the document reaches the accountant. Reading an invoice and making the proposal costs €0.0040.
“We started with my own AI agent. During the training that followed, I learned to build new applications myself. Today I am bringing this way of working with AI into my business. Working with Syntalith gave me exactly the skills and tools I needed.”
You choose the test cases. We anonymise them on request.
They stay in the EU and we delete them after the test.
We sign the NDA and the data processing agreement before we receive anything.
After acceptance you keep the code, the test set and the documentation. You pay for licences and model usage directly to the provider. Your accounting team on ChatGPT or Claude: from €1,150 net for a team of up to 10 people.
Questions
Where should an accounting firm start with AI?
With the cost invoices that every accountant describes by hand today. In the free review we count how many there are and how much time they take.
How much does invoice automation for an accounting firm cost?
From €3,000 net, paid once. After the 5-day test the build takes 2 to 6 weeks. You get a fixed price before the contract: 50% on signing and 50% after acceptance on your own invoices.
Is ChatGPT enough?
ChatGPT will help an accountant write a letter or explain a regulation. Thousands of invoices with each client's rules need a system with checks and a trail. You can start with ChatGPT or Claude for the team from €1,150 net.
When does it not pay off?
Below 260 invoices a month the payback takes more than a year. Then it is better to start with ChatGPT or Claude for the team, from €1,150 net, with training on your own tasks.
Does the system know each client's rules?
Yes. We record the rules separately for each client, and every proposal shows which rule it comes from.
What do we need to prepare?
20 to 100 described invoices from 3 to 5 clients, their posting rules and the name of your accounting software.
Let's talk
Just write, call or choose a date.
We work fast because we hate corporate cotton wool. We don't have salespeople or managers to keep an eye on managers. You talk immediately to engineers who then build your system. We respect each other's time and yours too.
We will accept 3 more companies by the end of the year.
What our OpenAI and Anthropic partnerships mean for you.
OpenAI makes ChatGPT and Anthropic makes Claude. We belong to the partnership programs of both companies, so we work with their tools every day and learn from the creators themselves.
Claude Partner Network
01We will select a tool for the task
We implement both ChatGPT and Claude. We check both on your documents, and you choose the one that makes fewer corrections and saves more time.
02Knowledge straight from the creators
We learn from official OpenAI and Anthropic courses and materials. Your team learns about the features and settings that work today.
03Licenses without our margin
You buy accounts directly from OpenAI or Anthropic and receive an invoice from them. We do not add anything to the license.
04Certified engineers
On the team, we have an AWS certification in machine learning and an Anthropic certification in systems architecture on Claude.
Participation in programs does not mean that OpenAI or Anthropic endorses our services.
customer service
