With the transition to the new MyTaxes system, all DOR account IDs will now be 9 digits.
If you had a previous tax account ID: Leading zeros have been added to your previous account ID to make it 9 digits.
New tax account IDs: A 9-digit account ID will be assigned to any newly created accounts.
Insurance Surcharge and Insurance Premium: A 9-digit account ID will be assigned to these tax types.