Odoo Gold Partner — Migration & upgrades
Odoo Migration in the UK
TechUltra serves clients across the UK and Ireland through a B2B collaboration with a partner firm in Nelson, Lancashire. Your TechUltra consultant owns delivery; the UK partner covers GMT/BST-hours contact, on-site days, and HMRC-facing statutory work. Engagements run in GBP with VAT-aware pricing.
TechUltra's Ahmedabad HQ, working with our UK partner firm in Nelson, Lancashire.
Last reviewed:
What's included in Odoo migration for UK
Safe, hassle-free Odoo upgrades and migrations from SAP, QuickBooks, Tally, NetSuite, Microsoft Dynamics, or older Odoo versions. Zero data loss, minimal downtime, and a four-stream playbook (Data Migration → Module Migration → System Migration → Version Upgrades) delivered by an Odoo Gold Partner.
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Source-system audit
Read-only access to your current ERP. We document data structures, custom fields, integrations, custom code, and all the undocumented tribal knowledge.
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Data mapping
Field-by-field mapping from your source system to Odoo. Edge cases, legacy values, and data-quality issues are flagged for cleanup before cutover.
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Migration scripts
Idempotent migration scripts written in Python — re-runnable as many times as you need against staging before the production cutover.
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Process redesign
Many 'must-have' source-system features turn out to be workarounds for old problems. We map current processes to Odoo's defaults and flag where defaults are better.
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Custom feature port
Custom features in your source system get ported to Odoo only if they still solve a real problem. We don't recreate dead workflows just because they exist.
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Integration rebuild
Connectors to your CRM, payment gateway, e-commerce, and vertical SaaS rebuilt against Odoo's API. We re-test each integration end-to-end during UAT.
How we migrate you to Odoo in the UK
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Discovery + source audit — 1 week
One-week deep dive into your current ERP — data, integrations, custom code, undocumented behavior. Output: a written diagnostic and risk register.
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Migration blueprint — 1–2 weeks
Field-level data mapping, custom-feature port list, integration rebuild plan, parallel-run plan, and cutover playbook. All signed off before build.
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Build and migration scripting — 8–14 weeks
Iterative two-week sprints. Migration scripts run against staging from week one. Custom features and integrations rebuilt in parallel.
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User acceptance testing — 2 weeks
Real-data UAT with the team running their actual workflows. Migration scripts re-run as many times as needed against staging until UAT passes.
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Parallel-run period — 2–4 weeks
Both old and new systems run side-by-side for 2–4 weeks. Daily reconciliation reports highlight any discrepancies. Issues fixed in scripts and re-run.
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Cutover and hypercare — 1 weekend + 90 days
Cutover weekend with rehearsed rollback. 90 days of post-launch hypercare from a dedicated team after the new system is live.
A typical mid-market migration runs 14–24 weeks end to end: 1 week discovery and audit, 1–2 weeks blueprint, 8–14 weeks build, 2 weeks UAT, 2–4 weeks parallel run, then cutover. The parallel-run period is non-negotiable — it's how we catch the data-quality issues that always surface only with real production transactions. Migrations from clean modern systems (NetSuite, Zoho) are faster than from legacy systems with 10+ years of accumulated edge cases (custom-built ERPs, old SAP installations). Multi-entity migrations are phased: lead market first, then expand.
UK compliance we configure out of the box
| Standard | What it requires |
|---|---|
| Making Tax Digital (MTD) for VAT | Native MTD-compliant VAT submission via HMRC API. Quarterly VAT returns generated from Odoo, submitted directly to HMRC, with audit trail. Bridging-software setups for businesses transitioning from spreadsheet-based returns. |
| VAT — UK and EU rules | Standard UK VAT rates (20% standard, 5% reduced, 0% zero-rated), exempt-supply handling, and partial exemption for businesses with mixed exempt + taxable activity. EU VAT rules for cross-border B2B (reverse charge) and OSS for B2C. |
| Post-Brexit trade rules | GB → EU customs declarations, rules-of-origin tracking for preferential tariffs, NI Protocol handling for trade between Great Britain and Northern Ireland, and EORI-number management. |
| Companies House filings | Annual accounts in iXBRL format for filing with Companies House, P11D / payroll year-end packs, and statutory disclosures. Auto-generation from Odoo with controlled review before submission. |
Odoo Migration pricing in the UK
UK engagements are priced in GBP with VAT applicable (20% standard rate). Every UK project is priced to its scope: modules, integrations, entities and Making Tax Digital VAT. You get a fixed price in GBP after a one-week discovery, before any build starts. Retainer engagements (Support, Hire-Developer) start at £1,200/month. Cross-border engagements (UK headquartered, EU subsidiaries) handled with multi-currency reporting.
What moves the price
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Source-system complexity
Migrating from a clean modern SaaS ERP is faster than from a 12-year-old custom system with no API and inconsistent data. We audit before quoting so you know what you're paying for.
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Data depth and history
Migrating master data + 12 months of transactions is fast. Migrating 5+ years of history with full reconcilability adds 2–4 weeks. We'll honestly tell you when older history is better off in cold storage.
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Custom feature port count
Each custom feature ported to Odoo carries an effort estimate. Our default is to port nothing and let the team try Odoo's defaults during UAT — most 'must-have' features turn out to be workarounds.
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Integration rebuild count
Each connector to a third-party system needs to be re-pointed at Odoo and re-tested. The cost depends on how the integration was originally built, not just the count.
See the full breakdown on Odoo pricing and implementation cost by country.
Odoo Migration in UK: frequently asked questions
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How much does an Odoo migration cost in the UK?
UK engagements are priced in GBP with VAT applicable (20% standard rate). Every UK project is priced to its scope: modules, integrations, entities and Making Tax Digital VAT. You get a fixed price in GBP after a one-week discovery, before any build starts. Retainer engagements (Support, Hire-Developer) start at £1,200/month. Cross-border engagements (UK headquartered, EU subsidiaries) handled with multi-currency reporting. Every TechUltra engagement is fixed-price after a one-week discovery, so the number you sign is the number you pay for the agreed scope.
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How long does an Odoo migration take in the UK?
A typical mid-market migration runs 14–24 weeks end to end: 1 week discovery and audit, 1–2 weeks blueprint, 8–14 weeks build, 2 weeks UAT, 2–4 weeks parallel run, then cutover. The parallel-run period is non-negotiable — it's how we catch the data-quality issues that always surface only with real production transactions. Migrations from clean modern systems (NetSuite, Zoho) are faster than from legacy systems with 10+ years of accumulated edge cases (custom-built ERPs, old SAP installations). Multi-entity migrations are phased: lead market first, then expand. UK-specific compliance configuration (Making Tax Digital (MTD) for VAT, VAT — UK and EU rules) is built into the setup phase rather than bolted on at the end.
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Does TechUltra have a team in the UK?
A named TechUltra lead (5+ years on Odoo) plus the Ahmedabad engineering bench, working alongside our Lancashire partner firm for UK-hours contact, on-site days and statutory filing support. The UK-facing group is intentionally small and senior. TechUltra's Ahmedabad HQ, working with our UK partner firm in Nelson, Lancashire.
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Are you HMRC MTD-compliant for VAT?
Yes — every UK Odoo implementation includes MTD-compliant VAT submission via HMRC's API. Quarterly VAT returns generate from Odoo with full audit trail, submit directly to HMRC, and include digital-link records. We've handled MTD transitions for businesses moving off Excel-based returns and bridging-software setups.
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Can you handle post-Brexit trade?
Yes — GB → EU customs declarations, rules-of-origin tracking for preferential tariffs (UK-EU TCA), Northern Ireland Protocol handling for GB→NI trade, EORI-number management, and inward-/outward-processing relief tracking. We've supported clients through Brexit-era trade-rule transitions on Odoo.
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What do Odoo migration services include?
A read-only audit of your current ERP; field-by-field data mapping with quality issues flagged before cutover; idempotent Python migration scripts you can re-run against staging; a decision on each custom feature (port it or let Odoo's default replace it); integrations rebuilt against Odoo's API and re-tested in UAT; a 2–4 week parallel run with daily reconciliation; a rehearsed cutover with a documented rollback; and 90 days of hypercare. The price is fixed after a one-week discovery.
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Do we need a migration or an Odoo upgrade?
If you are leaving another system (SAP Business One, NetSuite, Dynamics, Tally, Zoho, QuickBooks, Sage, a custom ERP), it is a migration and this page applies. If you are already on Odoo 15–19 and want Odoo 20 while keeping your build, it is a version upgrade: the database moves through each version in order and your custom modules are ported. See Odoo upgrade services, or size it yourself on odooupgrades.com, our dedicated upgrade site, which also handles Odoo 8–15. Both start with the same one-week discovery, so you do not have to decide before talking to us.
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