A professional accountant performing your bookkeeping not only books your sales and purchases in a licensed software but also your bank account and payroll in such a manner that they reconcile. By reconcile we mean that your books (accounting entries) agree with the bank account, payroll creditor at any given month and most importantly comply with local laws and regulations.
Sounds easier than it actually is. With more than 20 years in the field bookkeeping is a complex and demanding task. A task that certainly not anyone can do.