Any business of any size can set up one of these types of retirement plans, including a self-employed business owner. The solo 401(k) is a retirement savings option for small businesses whose only eligible participants in the plan are the business owners.Looking for a retirement plan or business investing account? Schwab offers a range of small business solutions to help you manage your finances. Explore your options and find a tax-advantaged small business plan as a self-employed professional, entrepreneur, or business owner. 401(k) plans can be a powerful tool to promote financial security in retirement. A business retirement plan can help you save for the future with tax breaks. Here are the top self-employed retirement plans and how they compare. Our retirement plans for self-employed people and small business owners can help you keep more of your business income through tax deferrals. Information on retirement plans for small businesses and the selfemployed.