Start by splitting the budget in two: making the commercial and showing it. For a small business TV campaign, Simulmedia’s sample budget sets aside $2,000 to $5,000 for production and $3,000 to $15,000 for local airtime (Simulmedia). A social media campaign can start much smaller, because you choose the daily ad spend.
For a first commercial, keep production modest and save money to promote it. Pick one goal, one short video, and one or two platforms where your customers already spend time. Track calls, clicks, or bookings for a month, then put more money behind what works.