A 50-person B2B company adds roughly 500 to 1,000 new CRM records per month through inbound forms, outbound prospecting, event lists, and integration syncs. Without a structured hygiene routine, those records degrade at roughly 30% per year. Within 18 months, the CRM becomes a liability rather than an asset.
This checklist breaks CRM data hygiene into four cadences: weekly, monthly, quarterly, and annual. Each task has a clear owner, a defined outcome, and an estimated time. Copy it, assign it, and run it.
Weekly Tasks (30 Minutes)
These are the tasks that prevent small problems from compounding into large ones. Assign them to a single person - typically a RevOps coordinator or a senior SDR.
1. Review and Merge Flagged Duplicates
Time: 10 minutes
Owner: RevOps / CRM admin
What: Check the CRM's built-in duplicate management tool. Review the top 20 flagged duplicate pairs. Merge confirmed duplicates, dismiss false positives.
Why: Duplicates compound weekly. Catching them early prevents reps from double-contacting prospects and keeps pipeline data clean.
2. Check Integration Sync Errors
Time: 5 minutes
Owner: RevOps / CRM admin
What: Review the error log for every active integration (marketing automation, enrichment tools, calling platforms). Flag any integration with more than 10 errors in the past week.
Why: A broken integration silently corrupts data with every sync cycle. Five minutes of checking prevents five hours of cleanup later.
3. Audit New Records from the Past Week
Time: 10 minutes
Owner: RevOps / CRM admin
What: Filter contacts created in the last seven days. Spot-check 20 records for completeness (are required fields populated?), validity (are email formats correct?), and source attribution (do you know where each record came from?).
Why: Bad records enter the CRM constantly. A weekly spot-check catches systemic issues early - a broken form, a misconfigured import, an integration creating junk records.
4. Review Bounced Emails
Time: 5 minutes
Owner: Marketing ops / SDR lead
What: Pull a list of hard bounces from the past week's email sends. Remove or flag those email addresses. Check if bounces are concentrated on a single domain (which might indicate a company-wide email change or domain expiry).
Why: Continuing to send to bounced addresses damages your sender reputation across all outreach.
Monthly Tasks (2 Hours)
Monthly tasks address data decay patterns that are too slow to catch weekly but too fast to leave for a quarter.
5. Field Completeness Report
Time: 30 minutes
Owner: RevOps
What: Run a completeness report across your 10 most important contact fields. Calculate the percentage of records with each field populated. Compare to last month's numbers.
Why: Completeness rates should trend upward if enrichment is working. If they are flat or declining, something is wrong with your data entry or enrichment process.
6. Segment Health Check
Time: 20 minutes
Owner: Marketing ops
What: Record the size of your five most important marketing segments. Compare to last month. Investigate any segment that shrank by more than 5% without deliberate removal.
Why: Shrinking segments indicate silent data corruption - field values changing, records losing required properties, or integration syncs overwriting segment-critical fields.
7. Stale Deal Review
Time: 30 minutes
Owner: Sales manager
What: Pull all deals that have not changed stage in 45+ days. For each one: is it genuinely still alive (update the next step and close date) or is it dead (move to Closed Lost with a reason)?
Why: Stale deals inflate pipeline value and distort forecasting. Monthly cleanup keeps the pipeline honest.
8. Contact Owner Audit
Time: 20 minutes
Owner: RevOps
What: Check for contacts assigned to users who have left the company or changed roles. Reassign orphaned contacts to active owners.
Why: Unowned contacts do not get worked. If a rep leaves and their 300 contacts are not reassigned, those prospects go dark.
9. Unsubscribe and Opt-Out Compliance Check
Time: 20 minutes
Owner: Marketing ops
What: Verify that unsubscribe requests from the past month have been properly processed across all systems. Check that opted-out contacts are not being re-enrolled in sequences through any channel.
Why: GDPR and PECR compliance is not optional. A single missed opt-out can trigger a complaint to the ICO.
Quarterly Tasks (Half Day)
Quarterly tasks tackle the structural issues that weekly and monthly maintenance cannot address.
10. Full Duplicate Sweep
Time: 2 hours
Owner: RevOps
What: Export your entire contact database. Run deduplication matching on email, first name + last name + company, and phone number. Identify all duplicate clusters, not just the ones the CRM flags automatically.
Why: CRM-native duplicate tools miss 30% to 50% of actual duplicates. A quarterly export-and-match catches the rest.
11. Companies House Validation
Time: 1 hour
Owner: RevOps / data team
What: Cross-reference your UK company records against Companies House data. Flag any company that is dissolved, struck off, dormant, or in administration. Remove these from active prospecting lists.
Why: Roughly 500,000 UK companies change status each year. Without quarterly checks, your CRM accumulates dead companies that waste rep time.
12. Property and Picklist Review
Time: 1 hour
Owner: CRM admin
What: Review all custom properties. Archive any property not used in a form, workflow, list, or report in the past 90 days. Review picklist values for consistency - merge similar options, remove outdated ones.
Why: Property bloat makes the CRM harder to use, slower to load, and more confusing for reps. Quarterly pruning prevents it from getting out of control.
If the quarterly review reveals problems across multiple areas simultaneously, it may be time to bring in a data operations retainer to handle ongoing hygiene systematically rather than reactively.
Annual Tasks (Full Day)
13. Full Data Quality Audit
Time: 4 hours
Owner: RevOps lead
What: Score your entire CRM across the six dimensions of data quality: accuracy, completeness, consistency, timeliness, uniqueness, and validity. Document scores, compare to last year, and set targets for the next 12 months.
Why: An annual audit gives you a baseline to measure whether your hygiene programme is actually working or just creating busywork.
14. Integration Architecture Review
Time: 2 hours
Owner: RevOps / IT
What: Map every system connected to your CRM. For each integration, document: sync direction, field mappings, frequency, and data ownership (which system is the source of truth for each field). Remove integrations that are no longer needed.
Why: Integration drift is the single largest source of silent data corruption in growing B2B companies. An annual architecture review catches problems that daily use obscures.
15. Data Retention and Compliance Audit
Time: 2 hours
Owner: RevOps / Legal
What: Review records older than your data retention policy (typically 24 months for B2B prospect data). Verify lawful basis documentation for active prospecting records. Delete or archive records that no longer have a valid basis for processing.
Why: UK GDPR requires that personal data is not kept longer than necessary. An annual purge keeps you compliant and reduces database bloat.
Making It Stick
A checklist only works if someone owns it. Assign a single person as the CRM hygiene owner. Give them protected time - 30 minutes weekly, two hours monthly, half a day quarterly. If nobody has capacity, that is a resourcing problem worth solving, because the cost of not maintaining your CRM data is always higher than the cost of maintaining it.
Print this checklist. Pin it to the wall. Or better yet, turn it into a recurring task in your project management tool with due dates and assignees. The teams that treat CRM hygiene as operational infrastructure - not an optional extra - are the ones whose data is still trustworthy 12 months from now.
