Definition
A book year (also called fiscal year or financial year) is an accounting period, typically 12 months, within a folder. Companies close their books and report their financial results per book year.Purpose
- Defines the accounting period in which each transaction is recorded.
- Separates open periods, where entries can still be added, from closed periods.
Structure
Each book year has:- A name (
name), typically the year, e.g.2026 - A start date (
start) and an end date (end) - A closed flag (
closed): a closed book year normally cannot be modified or receive new entries
Relationships
- A book year belongs to a folder. A folder can have several book years, usually with one open at a time.
- The accounting date of a journal entry (
date) sets the book year it falls into. For an invoice, the document date (invoice_date) can differ from the accounting date. - Some accounting software numbers documents per journal and per book year.
API endpoints
- Get book years: list the book years of a folder.