The price of bookkeeping services in Delaware might change depending on the nature of the required services, the complexity of the financial transactions, and the size of the organization. Basic bookkeeping services could cost small businesses in Delaware anywhere from $100 to $300 per month on average. More extensive services, such as tax preparation, financial analysis, and payroll management, might run you anywhere from $300 to $800 each month. Larger companies with more complex financial processes may incur monthly charges of $800 to $1500 or more.