Automatic categorisation
Drop a voucher onto the entry form. The AI recognises the supplier, date and amount, and suggests an account. You approve with one click.
AI-assisted bookkeeping · Finland
Accounting that thinks.
The AI categorises vouchers and bank-statement lines. You or your accountant approve. The program runs on your own machine, and your data stays in your hands.
The core bookkeeping features work without a subscription. The AI assistant requires a paid subscription.
Bank-statement classification
Upload a CSV statement. The AI suggests an account for every line. Review one by one or approve in a batch.
A complete Finnish bookkeeping suite
Journal entries, VAT reports, invoicing, reports and archive. Runs locally on your own machine.
How it works
- Step 01
Download A1 Kirjaus
macOS or Windows. Installs in minutes.
- Step 02
Open or create a book
Continue with an existing Kitsas file or start a fresh book.
- Step 03
AI suggests, you approve
The AI never books anything without your confirmation. The original voucher stays visible alongside.
Everything a small business needs
A1 Kirjaus is built on the open-source Kitsas accounting engine and extends it with Claude AI. The Finnish bookkeeping logic, chart of accounts and VAT rules remain intact; the user experience has been rebuilt.
- Journal entries (vouchers, postings, AI suggestion)
- Browse and search
- Invoicing
- VAT reports
- Year-end statements and reports
- Archive
- AI assistant in side panel
- Account autocomplete and keyboard navigation
Privacy
Your data stays on your own machine.
Your bookkeeping is stored locally in a SQLite file. Vouchers and transactions are never sent anywhere without your permission. When you use the AI assistant, only the information needed for that specific question is sent to Anthropic's Claude model for analysis.