A 401(k) is an employer-sponsored retirement plan. Employees contribute a percentage of each paycheck before tax, the money grows tax-deferred in an investment account in their name, and the business can choose to add a matching contribution on top. At retirement, withdrawals are taxed as ordinary income.
For the business, offering a 401(k) is a recruiting and retention benefit. For the owner, it’s often the single largest tax-advantaged savings vehicle available. Under the SECURE Act, eligible small businesses that start a new plan or add auto-enrollment may qualify for federal tax credits during the plan’s first three years — a meaningful offset against setup and administration costs.