The document discusses four methods for setting an advertising budget:
1. The Affordability Method bases the budget on the company's financial capacity to spend on advertising.
2. The Percentage of Sales Method decides the budget as a specific percentage of current or anticipated sales.
3. The Competitive Parity Method considers competitors' advertising activities and costs.
4. The Objective and Task Method is the most scientific as it involves defining objectives, determining tasks to achieve them, and estimating costs.