How do I ensure my accounting system migration with bookkeeping software setup is compliant with access controls and audit needs?

To keep an accounting system migration and bookkeeping software setup compliant with access-control and audit requirements, focus on who can access what, how changes are tracked, and how evidence is preserved.

1) Define roles and least-privilege access

• Create a role matrix for every user group: AP, AR, payroll, controller, accountant, auditor, admin.
• Grant only the permissions each role needs.
• Separate duties where possible:
  • person entering transactions ≠ person approving payments
  • person reconciling accounts ≠ person posting adjustments
• Remove shared accounts; use named user IDs only.

2) Enforce strong authentication

• Require multi-factor authentication (MFA) for all privileged users and ideally all users.
• Use a central identity provider if available (SSO/Entra/Okta/Google Workspace).
• Set strong password policies and session timeouts.
• Review privileged access more frequently than standard access.

3) Control migration access tightly

• Limit migration data access to a small, approved team.
• Use temporary elevated access with start/end dates.
• Keep a written migration access log: who had access, when, and why.
• Disable or archive old-system access only after validation and signoff, not before critical reconciliation is complete.

4) Preserve audit trails

• Make sure the new software records:
  • logins/logouts
  • record creation, edits, deletions
  • approvals
  • journal entries and reversals
  • master data changes (vendors, customers, bank accounts, tax settings)
• Turn on audit logs before go-live.
• Confirm logs are tamper-evident and retained according to policy.

5) Maintain data integrity during migration

• Reconcile opening balances, subledgers, and control accounts before cutover.
• Keep a data mapping document showing source-to-target fields.
• Save transformation scripts, import files, and validation reports.
• Use checksums or row counts where possible to prove completeness.

6) Keep evidence for auditors

Store a migration evidence package containing:

• project plan and approvals
• risk assessment
• access matrix
• user provisioning/deprovisioning records
• test results and reconciliation reports
• exceptions and remediation notes
• signoff that legacy and new balances match
• audit-log samples and retention settings

7) Implement approval workflows

• Configure approvals for:
  • vendor creation
  • payment runs
  • journal entries
  • bank detail changes
  • refunds/credit notes
• Require dual approval for high-risk actions.
• Document override procedures and when they are allowed.

8) Secure backups and retention

• Back up both source and target systems during migration.
• Verify restoration capability.
• Retain legacy data in read-only form if required for statutory or audit purposes.
• Ensure retention schedules match legal, tax, and policy requirements.

9) Review and monitor after go-live

• Perform a post-migration access review within 30 days.
• Review audit logs for unusual activity.
• Reconcile accounts during the first close cycles more frequently than usual.
• Track and resolve permission issues and control gaps.

10) Align with your compliance framework

Depending on your environment, map controls to requirements such as:

• SOX: segregation of duties, change control, evidence retention
• GDPR/Privacy: least access to personal data, retention limits, lawful processing
• ISO 27001 / SOC 2: access management, logging, change management, backups
• Tax/accounting regulations: record retention, immutability, auditability

Practical checklist

Before go-live, confirm:

• role-based access reviewed and approved
• MFA enabled
• audit logs enabled and tested
• segregation of duties verified
• migration reconciliations signed off
• legacy data preserved/restricted
• backup and restore tested
• evidence package stored
• post-go-live access review scheduled

If you want, I can turn this into a migration compliance checklist or a policy template for your team.