The Complete CRM to HubSpot Migration Checklist for 2026

Your Migration Checklist: 50+ Steps to a Successful Switch

CRM migration involves hundreds of decisions and tasks across multiple weeks. Missing a single step – like forgetting to map a critical custom field or skipping activity history migration – can cause weeks of rework after go-live. This checklist covers every step from initial planning through post-launch optimization.

Print this checklist. Assign owners and deadlines to each item. Review progress weekly during your migration project.

Phase 1: Planning and Discovery (Week 1-2)

Phase 2: Data Preparation (Week 3-4)

Phase 3: HubSpot Configuration (Week 5-6)

Phase 4-6: Migration, Testing, Go-Live

Phase 4 items: Test import (100 records per object), full import in correct order, verify record counts and associations, import activity history, spot-check 50 records for accuracy.

Phase 5 items: Build and test workflows, create dashboards and reports, configure marketing assets (forms, emails, landing pages), test all integrations.

Phase 6 items: Team training (role-specific), parallel run period (1-2 weeks), official go-live, decommission old system, 30-day post-launch support.

Conclusion

A structured checklist transforms CRM migration from an overwhelming project into a manageable process with clear milestones. Use this checklist as your project management framework: assign owners, set deadlines, and review progress weekly. The investment in planning prevents the post-migration chaos that results from rushed, unstructured migrations.

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The 3-Phase Migration Checklist: Pre, During, Post

A complete CRM-to-HubSpot migration checklist organises work across three phases. Pre-migration (weeks -8 to 0): export all data from source system, audit data quality, document field mapping, configure HubSpot data model (properties, pipelines, deal stages, lifecycle stages), set up user accounts and permissions, configure email and calendar integrations, and complete test import with validation. During migration (week 0): deactivate source system for new entries (or set it to read-only), complete full data import, run duplicate contacts check, validate 50+ records across all object types, activate workflows and sequences, and confirm all integrations are connected. Post-migration (weeks 1-4): daily monitoring of workflow error rates and integration sync health, weekly data quality spot-checks, user adoption tracking, issue log and rapid resolution process, and 30-day post-migration review with the implementation team.

The Non-Obvious Migration Checklist Items That Teams Miss

• Disable all source system automation before go-live – automations in the old CRM firing after go-live create conflicting data.
• Configure HubSpot’s GDPR/CCPA consent properties before importing EU or California contacts.
• Set up the HubSpot tracking code on your website on day 1 post-migration to begin capturing new web activity immediately.
• Configure your email sending domain (DKIM and SPF authentication) before sending any HubSpot marketing emails to protect deliverability.
• Brief all users on the go-live date and the “no new activity in the old system” rule at least 2 weeks before go-live.
• Confirm that your IT team has whitelisted HubSpot’s IP ranges for any email or integration firewalls.

What a Complete CRM Migration Looks Like: A 10-Week Project Example

Week 1-2: kick-off, source data export, data quality audit, HubSpot portal setup (properties, pipelines). Week 3-4: field mapping documentation, data cleaning (deduplication, standardisation, lifecycle assignment). Week 5-6: HubSpot configuration (workflows, sequences, integrations, dashboards). Week 7: test import (200 records), validation, mapping corrections. Week 8: full data import, validation, user account setup, training sessions. Week 9: parallel operation period (users work in HubSpot while source system is read-only). Week 10: full go-live, source system archived, 30-day support period begins. This timeline is representative for a 10,000-25,000 contact migration with 2-3 Hubs and basic integrations.

Frequently Asked Questions

The Data Freeze Rule: Why It Matters More Than the Import

The most underappreciated element of a CRM migration is the data freeze – the moment when the source system is put into read-only mode and all new activity must be logged in HubSpot. Without a clearly communicated and enforced data freeze rule, two problems occur. First, data divergence: deals are updated in the old CRM after the migration export was taken, meaning HubSpot’s imported data is already outdated at go-live. Second, adoption delay: if reps can still use the old system after go-live, they will – creating a parallel operation period where the migration never truly completes. The data freeze rule must be communicated clearly, typically 2 weeks before go-live: “After [date], no new contacts, deals, or activities will be entered in [old system]. All new activity will be logged exclusively in HubSpot.”

Migration Success Metrics: How to Know the Migration Worked

A successful migration should be measurable against four criteria at 30 days post-go-live. First, data fidelity: spot-check 50 contact records across a stratified sample (by industry, lifecycle stage, and record age) and verify that all key fields are correctly populated. Second, user adoption: 100% of sales reps have logged at least one contact interaction in HubSpot in the past 7 days. Third, pipeline continuity: all active deals from the old system are present in HubSpot with the correct deal stage, value, and owner. Fourth, workflow operation: all critical automation workflows are enrolling at expected rates (verify using the workflow enrollment history report). If any of these four criteria fail at day 30, the migration has an unresolved issue that requires immediate attention before it compounds.

Website Tracking and Lead Capture: The Migration Touchpoint Most Teams Forget

When migrating from one CRM to HubSpot, the website lead capture configuration is often the last item on the migration checklist – but it should be one of the first. Install the HubSpot tracking code on your website on the first day of the migration project (not go-live day). This ensures that contact activity from web visits is being tracked in HubSpot before the CRM data is migrated – meaning migrated contacts immediately have web activity on their HubSpot timeline from the first day of your migration project. If you install the tracking code only on go-live day, contacts migrated from the old system have no historical web activity in HubSpot, reducing the value of lead scoring and behavioural workflows that depend on website engagement data.

Post-Migration Optimisation: The First 6 Improvements to Make

After go-live and the 30-day stabilisation period, the first 6 optimisations that generate the most value. First, add a lead scoring model if you did not have one pre-migration. Second, connect Google Ads and LinkedIn Ads to HubSpot for campaign attribution. Third, build the first A/B test on your highest-traffic lead capture form to improve conversion rate. Fourth, review the 5 workflows with the lowest enrolment rates and diagnose whether the trigger criteria are too narrow or the workflow serves a real use case. Fifth, conduct a contact database hygiene pass – suppress or delete contacts with invalid emails, contacts who have not engaged in 18+ months, and contacts who represent company types outside your ICP. Sixth, build a standardised monthly reporting deck for leadership using HubSpot dashboard screenshots, establishing a rhythm of data-driven performance reviews.

The Post-Migration Checklist: 30 Days After Go-Live

At 30 days post-migration, run through this checklist to confirm the migration is truly complete. All active contacts from the source system are present in HubSpot with correct lifecycle stages assigned. All open deals have been verified for correct stage, value, owner, and close date. No workflows are throwing persistent errors in the workflow performance report. Integration sync health shows no failed syncs in the past 7 days. All users are active in HubSpot (verified via the user activity report). The old CRM has been set to read-only access with a defined decommission date communicated to all users. Leadership dashboards are populated with accurate data and have been reviewed in at least one team meeting. Post-migration support requests have reduced to under 5 per week (indicating that the initial learning curve has been resolved). Completing this checklist at day 30 confirms that the migration is operationally complete.