The tax liability depends on the type of transaction, a stock sale or an asset sale, as well as a number of factors related to how your CPA has done tax planning.
See our blog Stock vs Asset Sale for information on the advantages and disadvantages of Stock Sales vs Asset Sales.
It is critical to discuss tax planning with your tax advisor prior to selling your business as some tax strategies need to be set up well in advance. We work with several tax strategy CPAs that can work with you to dramatically reduce your tax liability. Our tax planning CPAs have tax strategies that can defer up to 90% of the taxes at closing and often reduce taxes by as much as 30% tp 40%.
For more information see our blog How to Minimize Taxes on the Sale of My Business