Reviso UK Help - How to Enter your Opening Balance
2. Filling out the Opening Balance :
Enter opening balances for accounts in QuickBooks Desktop
Setting Your Initial Capital, Opening Balance and Closing Balance – OneUp Knowledge Center
Accounting > A-Z Trial Balances
FAQ - Why do my opening balances show positive (+) or negative (-) amounts?
Entering opening balances - MYOB Essentials Accounting - MYOB Help Centre
Reconciliation Troubleshooting - Starting Balance of bank reconciliation does not match closing balance of previous reconciliation - Knowledge Base - IRIS KashFlow