We created ShareBuilder 401(k) for small business. Our 401(k) plans are designed to be the low-cost 401(k) solution that is easy to manage for small business owners. ShareBuilder 401(k) provides leading online and offline technologies to deliver comprehensive retirement benefits. Whether you're looking for a Roth 401(k), a solo 401(k), or a safe harbor 401(k), we're here to help you save for the retirement you envision.