How much should a brand spend on marketing in South India?
There is no defensible single budget percentage for every brand marketing across Tamil Nadu, Karnataka, Kerala, Telangana and Andhra Pradesh. The October 8 discussion in ET BrandEquity makes a useful point: regional effectiveness depends on goals, cultural relevance and measurable commercial value, not the size of the media budget alone. A local business selling everyday products faces a very different calculation from a high-margin subscription company.
First establish the economics
Start with customer acquisition cost (CAC), the cost to gain one new paying customer, and customer lifetime value (LTV), the economic contribution expected over the relationship. Revenue is not profit, so subtract product costs, delivery, payment fees, returns and other variable expenses before using LTV as a target.
Illustrative calculation, not an industry benchmark: suppose a campaign costs ₹60,000 and yields 120 verified new customers. The apparent acquisition cost is ₹500 per customer. If each customer contributes only ₹300 after variable costs, the first-order economics are negative; if reliable repeat purchases improve the contribution, the longer-term economics may be different. The point is to base the budget on real contribution and time to payback.
Five states require more than five translated ads
Bengaluru and Hyderabad may have sizable English-speaking digital segments, but neither city represents its entire state. Chennai, Kochi and smaller urban centres differ in language, purchase habits and local competition. Campaigns should test local creative concepts, landing pages, influencer credibility, offers and mobile experience. Translating an advertisement without adjusting its cultural premise can lose the reason it resonated originally.
Choose metrics that match the objective
- Lead generation: cost per qualified lead and percentage that converts.
- E-commerce: incremental orders, contribution after fulfillment and return rates.
- Store traffic: reliable store visits and attributable purchases, where measurable.
- Awareness: aided recall or brand-lift studies, not just click-through rate.
- Retention: repeat purchasing and customer value over time.
How to test a campaign before scaling
Define a fixed pilot period, a baseline and realistic attribution assumptions. Compare similar cities or audiences when possible rather than blindly crediting every sale to a platform that recorded the last click. Run separate creative tests for language and message. Increase spending where incremental margin covers incremental marketing costs. Revisit the results after delayed conversions and product returns become visible.
Common budgeting mistakes
Using impressions as a substitute for business outcomes; assuming all five states behave alike; treating platform-reported ROAS as independently proven profit; and increasing spend before checkout, customer service and inventory can support extra demand. Good marketing economics include operations, not just advertising dashboards.
Sources and transparency
ET BrandEquity: South India campaign ROI. The ₹60,000 example is hypothetical and is not attributed to the publication. Article drafted with AI assistance; verify all estimates against your own business data.
Editorial transparency: BCC prepared this original explanatory summary using AI drafting assistance and references listed below. AI-generated visuals, where used, are illustrative rather than documentary evidence. The article is based on information available October 8, 2026.