Can I use 401k as a down payment for a small business?

It is possible but very difficult.

• Step 1: Setting up a business
• Step 2: Establish a 401k plan for your business
• Step 3: Roll-over 401k tons "in their business 401k
• Step 4: Take the loan from your 401k professional and down payment on your business

Before diving in step 1, make sure you have blocked all your tax specialist and a reputable company that can help you establish a 401k plan.