Upgrade Odoo 13 to 16

Is Odoo 13 still supported?

Odoo patches its three most recent major versions. Fall off that list and security fixes stop — your live system still runs, but newly found holes stay open. Full calendar: Odoo version end-of-life calendar.

What breaks between Odoo 13 and 16?

Community upgrades run one major version at a time under the hood (OpenUpgrade). A 13 → 16 project is 3 sequential hops. Custom modules, JS/web client code, and third-party connectors are where most of the effort sits — not the raw database size.

Odoo 13 → 14

• Python 3.6 → 3.8 floor; some older OS images no longer work without a stack bump.
• web_enterprise / community web client diverged further — custom JS assets often need rework.
• Mail / discuss refactors and chatter field moves that break custom views.

Odoo 14 → 15

• Assets bundling (assets_backend / web.assets_*) replaces many old JS/CSS includes.
• Early OWL adoption in core — custom client actions and widgets start breaking.
• Accounting localization and tax report structure changes in several countries.

Odoo 15 → 16

• OWL 2 and a much larger share of the web client rewritten — custom JS/POS/website widgets are the usual pain point.
• View architecture and many XML attrs deprecated or renamed.
• Studio / custom fields and report QWeb templates frequently need porting.

Every hop also means OCA and third-party modules need a matching 16.0 branch (or a replacement). Abandoned apps are often the real schedule risk.

Odoo 13 to 16 upgrade cost

Partner market rates for a 3-version Community jump with custom code commonly land in the tens of thousands (sometimes much more once workshops and retainers are bundled). Our fixed price for the same whole-instance job — database and every custom addon — usually sits in the $5,000 – $15,000 band for a typical SME setup.

• Small & clean (few custom modules, tidy data): often toward the low end, sometimes under $5,000.
• Typical (handful of custom/OCA modules, a few years of data): the band above.
• Heavy (deep custom JS, warehouse/POS/accounting overrides, large messy DB): can move into the $15,000–$40,000 tier.

It's one fixed price for the whole jump — not a fresh bill for each intermediate version. See also how much an Odoo upgrade costs and the free upgrade cost estimator.

How the upgrade works

1. You send a database backup and your custom addons (or run our pre-migration analyzer first).
2. We return one fixed price within 24 hours.
3. We migrate DB + every module to Odoo 16 on a copy — your live 13 system stays untouched.
4. You test a working copy. You pay only after it works.