Ad Spend Budget Calculator

Ad spend varies by industry and business stage. Established businesses typically spend 5-10% of revenue on marketing. Growth-stage companies may invest 15-25% to acquire market share. Startups often spend 20-50% initially. The key is measuring ROAS (Return on Ad Spend) to ensure profitability.

A minimum ROAS of 4:1 ($4 revenue per $1 ad spend) is generally considered good for e-commerce. Subscription businesses can accept lower initial ROAS (2:1-3:1) because of recurring revenue. High-margin businesses (software, digital products) should target 5:1 or higher.

Calculate budget using: Revenue Goal ÷ Target ROAS = Ad Budget. For example, to generate $100,000 with a 4:1 ROAS, budget $25,000. Alternatively, use percentage of revenue: multiply your revenue goal by your target ad spend percentage (e.g., $100,000 × 10% = $10,000 budget).

Choose based on your cash flow and risk tolerance. Use conservative (5%) if you have limited cash or are testing new channels. Use moderate (10%) for steady growth with proven campaigns. Use aggressive (20%+) when you have strong unit economics and want rapid scaling.

Track these metrics: ROAS (revenue per ad dollar), CPA (cost per acquisition), conversion rate, and customer lifetime value. Compare against your targets monthly. If ROAS is below 3:1 after optimization, reconsider your channel or messaging.