Acting as a tax advisor, explain the main tax considerations for startups, including corporate tax rates, income tax, and sales tax obligations. Discuss how to manage payroll taxes, claim deductions for business expenses, and navigate tax credits such as R&D credits. Provide advice on when to hire an accountant or tax professional to assist in tax planning and compliance. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>