Because according to the relevant laws and regulations of the country, the enterprise's value-added tax, enterprise income tax, individual tax withholding and payment will be declared and paid before 15 every month. If the enterprise fails to declare and pay on time, there will be corresponding punishment measures, so this accountant will keep accounts and file tax returns for the company every month.
For start-ups, there are not many accounts, and they can't afford separate accounting. It is more cost-effective to find an agency bookkeeping company.
I hope I can help you.