When it comes to taxes, which statement fits best with a sole proprietorship business? Responses Tax reporting requirements are fairly simple and are the highest tax rate of any legal structure. Tax reporting requirements are fairly simple and are the highest tax rate of any legal structure. Tax reporting requirements are of mid-level complexity and are the mid-range rate of any legal structure. Tax reporting requirements are of mid-level complexity and are the mid-range rate of any legal structure. Tax reporting requirements are fairly simple and are the lowest tax rate of any legal structure. Tax reporting requirements are fairly simple and are the lowest tax rate of any legal structure. Tax reporting requirements are complex and are the highest tax rate of any legal structure