Moving from Odoo 15 to Odoo 16
This guide explains, in plain language, what changes for you when your system is upgraded from Odoo 15 to Odoo 16. It focuses on the things you will actually see and do day to day: the general look of the system, how accounting works, the redesigned bank reconciliation, and the changes in our Bulgarian accounting module (l10n_bg_ext).
Audience
Existing customers and their accountants whose database is being upgraded from Odoo 15 to Odoo 16. No technical knowledge needed.
Your data carries over
Your data, your invoices, your VAT journals and your chart of accounts all carry over. Nothing is lost — most screens will feel familiar. The notes in this guide cover only what is different.
What this guide covers
| # | Topic | What changes |
|---|---|---|
| 1 | The interface | Refreshed look, faster screens, clearer unsaved-changes |
| 2 | Accounting | Works as before — with one significant change |
| 3 | Bank reconciliation | Redesigned — the biggest change |
| 4 | Bulgarian accounting (l10n_bg_ext) | "Calculate in BGN", Company ID (ЕИК), invoice layout |
| 5 | Post-upgrade checklist | A few quick things to verify after the upgrade |
Looking for a newer version?
This guide covers the Odoo 15 → 16 step specifically. For the current PLANA Business Cloud (v17 / v18 / v19), see PLANA Business Cloud and Version differences.
Next: The interface →