Is Odoo 15 still supported in 2026?

Odoo 15 is likely past end-of-life in 2026. Released October 2021, with approximately 3 years of support, its support ended around late 2024. Organizations should migrate to a supported version.

How many breaking changes are there between v15 and v19?

Four major versions of changes: loyalty engine replacement (v16), attrs removal (v17), tree-to-list rename (v18), and module renames including SEPA to ISO 20022 (v19). Each affects custom modules differently.

Can I skip directly from v15 to v19?

Yes, using Odoo's migration service or a fresh install with data migration. You still need to address all breaking changes from each intermediate version in your custom modules, but you only do the migration once.

Is a fresh install better than in-place upgrade?

For heavily customized instances on v15, a fresh install with selective data migration is often cleaner and cheaper. In-place upgrade is better for standard installations with few customizations.

Odoo 15 End of Life: Migration Planning Guide (2026)

Odoo 15 Support Status

Odoo 15, released October 2021, is at or past its end-of-life date by 2026. Organizations still running v15 should plan migration to a currently supported version. The longer you delay, the more breaking changes accumulate between your version and the target.

Migration Path Options

v15 to v18 (Recommended Minimum)

Three major versions to cross: v16, v17, v18. Each introduces breaking changes that affect custom modules.

v15 to v19 (Maximum Features)

Four major versions. More breaking changes to address, but you get the latest features including the AI suite and ESG reporting.

Breaking Changes Per Version

v15 to v16

Loyalty/coupon engine replacement — coupon, sale_coupon replaced by unified loyalty
Knowledge app introduction (Enterprise)
Spreadsheet dashboard modules added
Website builder redesign

v16 to v17

attrs removal — most impactful change, affects all custom views
OWL 2.x frontend framework completion
UI design refresh

v17 to v18

tree renamed to list — all custom tree views need updating
html_editor extraction from web_editor
Hoot testing framework replaces QUnit
account_lock, account_payment_term, account_audit_trail merged into account

v18 to v19

SEPA modules renamed to ISO 20022
Delivery connectors moved to REST variants
account_consolidation removed
html_builder replaces web_editor for website building

Effort Estimate

Complexity	Custom Modules	Timeline	Budget Range
Low	0-5 simple modules	4-8 weeks	$5,000-15,000
Medium	5-15 modules	8-16 weeks	$15,000-50,000
High	15+ modules, integrations	16-30 weeks	$50,000-150,000+

Migration Steps

Audit — inventory all custom modules, views, reports, and integrations
Assess — identify which custom modules are still needed vs. replaceable by standard features
Plan — choose migration path (in-place vs. fresh install), target version, and timeline
Develop — update custom modules for all breaking changes
Test — run UAT with production data clone
Deploy — cutover with minimal downtime

DeployMonkey Advantage

DeployMonkey provides Odoo 19 hosting with migration support. Deploy a new v19 instance, migrate your data, and leverage AI-powered configuration to reduce setup time.