A Double Advantage Safe Harbor, or DASH 401k, is a type of retirement plan designed for small business owners who want to save more for retirement while also making the plan easier to manage. It combines two key features. First, it includes Safe Harbor rules, which help the plan automatically meet certain IRS requirements. This means the business owner can contribute more to their own account without worrying about failing special tests. Second, it allows for profit-sharing contributions, which can further increase how much the business can set aside for retirement. The “double advantage” comes from being both simple to administer and powerful in helping owners and employees save. Like other 401k plans, it can offer traditional (pre-tax) or Roth (after-tax) options, and it may include features like automatic enrollment and broad investment choices.