Justworks is a full-service PEO that can handle various HR functions for your business, including running payroll. The platform’s intuitive technology, coupled with excellent customer support, make it a great option for small businesses that want help managing human resources, including processing payroll and administering payroll taxes. Alternatively, consider the best HR software and the best online payroll companies, or look at the pros and cons of partnering with a professional employer organization. If you determine you are interested in a payroll provider without the co-employment model, read our review on Gusto. It is another top-rated HR solution.