A new chart of accounts can make last year’s XBRL mapping unreliable. Review the economic meaning of accounts and the authorised financial statements before carrying over old tags.
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A similar account code or label is not proof that the classification has stayed the same.
Build the old-to-new account bridge
Collect the old and new charts, migration mapping, opening balances and final reporting adjustments. Identify merged, split and newly created accounts.
Keep the migration bridge separate from the XBRL mapping. One explains how bookkeeping moved systems; the other explains how reporting information is classified.
Example: one liability account becomes several
The old system grouped different amounts under “other payables”. The new system separates trade balances, shareholder loans and accrued expenses. Review the actual reporting treatment rather than mapping every new code back to the old broad field.
Use current filing resources
ACRA’s requirements page links the current taxonomy and guidance. Confirm that the preparation tool and mapping use the relevant filing framework.
Do not select an “other” field solely to avoid understanding an unfamiliar balance. Ask the accountant to explain the item and appropriate reporting treatment.
Review the mapping file systematically
- Account code, description and underlying balance.
- Financial-statement classification.
- Relevant XBRL field and rationale.
- Current and comparative treatment.
- Reviewer and unresolved questions.
Test accounts with no mapping and accounts mapped more than once. Reconcile totals after the classification review, rather than using totals as the only control.
Keep the reviewed result reusable
Store the approved mapping with its taxonomy version and reporting period. Mark assumptions requiring review next year.
When the business changes, reassess new transactions instead of assuming last year’s mapping remains universally appropriate.
Can identical labels be mapped automatically?
Check their actual meaning and reporting treatment first.
Does balanced migration prove correct XBRL classification?
No. The two reviews answer different questions.
Related accounting and filing resources
Use our filing calendar reconciliation, filing evidence checklist and late financial statements guide.
Get help with financial reporting
For accounting, XBRL preparation and corporate filing support, email [email protected] or WhatsApp +65 8501 7133. Our accounting and tax advisers can assist with reporting questions. Legal advisers from associated law firms can assist where a filing issue involves legal concerns.