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ERP Migration Cost Calculator

Estimate the total cost and timeline of switching ERP systems. Covers data migration, integration rebuild, parallel running, and staff retraining.

12 source/target systemsRisk assessment includedRegion-adjusted cost basis (USD)

Migration Details

Tell us about your current setup and target system

Current ERP System

Target ERP System

Data Volume

Migration Complexity

Integrations to Migrate

People to Retrain

How many staff will be trained on the new system. Drives the retraining line directly — it is not inferred from your record count.

Region

Adjusts the cost basis in USD (consultant and delivery purchasing power). It does not convert the currency.

Rates behind this estimate (indicative — override to match your market)

Retraining cost per person

USD/person

Cost basis adjustment

Scales the whole estimate. Set 100% to use our rates as-is, or raise/lower it if delivery costs differ in your market.

Data migration base — SAP (Business One or S/4HANA): $50,000
Integration rebuild (per integration): $8,000
Parallel running (per month): $5,000

These rates are ECOSIRE's planning assumptions in USD — not vendor-published prices and not a quote. Verify them for your case.

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ERP Migration: What You Need to Know

The Five Phases of ERP Migration

A successful ERP migration follows five distinct phases: (1) Assessment and planning, where you audit your current data and define migration scope; (2) Data mapping and cleansing, the most critical phase where you map old fields to new structures and clean up data quality issues; (3) Development and testing, where ETL scripts are built and validated against sample data; (4) Parallel running, where both systems operate simultaneously for 1-3 months; and (5) Go-live and decommissioning, where the old system is retired and users fully transition.

Why Companies Switch to Odoo

The most common reasons for migrating to Odoo are a lower licensing cost than SAP or Oracle (how much lower depends on your user count and the modules you need — the calculator above prices the system you select), modernization of legacy systems, consolidation of multiple tools into one platform, and the desire for an open-source solution with no vendor lock-in. Odoo's built-in import tools and well-documented API make migrations smoother than most enterprise ERPs. ECOSIRE follows a documented migration methodology covering data mapping, cleaning, validation, parallel running, and go-live cutover.

Common Migration Mistakes to Avoid

The three most expensive migration mistakes are: (1) Migrating all historical data when only 2-3 years are needed, which can double migration costs; (2) Skipping parallel running to save money, which leads to undetected errors in production; (3) Underestimating change management, causing user adoption issues that negate the benefits of the new system. As delivery guidance rather than an industry figure, ECOSIRE recommends budgeting at least 15-20% of total migration cost for training and change management, and the calculator above prices the retraining line from the headcount you enter so you can see what that share actually costs.

Frequently Asked Questions

How much does it cost to migrate from SAP to Odoo?

ECOSIRE's own SAP-to-Odoo engagements typically fall between $30,000 and $250,000 depending on data volume, complexity, and the number of integrations — those are our delivered figures, not a published industry benchmark. Simple migrations with under 10,000 records are usually at the lower end; complex migrations with full history, custom fields, and several integrations are at the upper end. The calculator above builds the estimate line by line from the same drivers and lets you override every rate it uses.

How long does an ERP migration take?

Simple migrations (basic data, few integrations) take 2-4 months. Medium complexity migrations with custom fields and partial history take 4-8 months. Complex enterprise migrations with full historical data, regulatory requirements, and 8+ integrations can take 8-18 months. We recommend phased migrations to reduce risk and deliver value faster.

What data should I migrate to a new ERP?

At minimum, migrate master data (contacts, products, chart of accounts), open transactions (unpaid invoices, pending orders), and current inventory levels. Historical data is optional — consider migrating only 2-3 years of transaction history and archiving older records. Regulatory requirements may mandate longer retention of financial records.

Should I run both ERP systems in parallel?

Yes, running systems in parallel for 1-3 months is strongly recommended. This allows you to validate that the new system produces correct results before decommissioning the old one. Run at least one full billing/closing cycle in parallel. For budgeting, the calculator above prices parallel running at $5,000 per month as an indicative planning rate and scales it with your data volume — heavier environments cost more, so treat the figure as a starting point and override it if you have a better number.

What are the biggest risks of ERP migration?

The three biggest risks are: (1) Data quality issues — dirty data in the old system causes problems in the new one, (2) Integration failures — API connections that work differently in the new system, (3) User adoption — staff resistance to new workflows. Mitigate these with data cleansing before migration, thorough integration testing, and comprehensive training programs.

Planning an ERP Migration?

ECOSIRE has served 500+ businesses since 2018, and migrates from SAP, Oracle, and Dynamics to Odoo. Get a free migration assessment with a detailed project plan and timeline.

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