Decide the mandate before you shortlist
Most bad agency relationships start with a vague brief. Before you speak to anyone, write one sentence: the outcome, the timeframe, and the channel you believe drives it. "Sixty qualified B2B enquiries a quarter from Mumbai and Pune within two quarters" is a mandate. "We need digital marketing" is not.
What Mumbai retainers cost in 2026
- Performance media management: ₹50,000 – ₹1,50,000 per month, or 10–15% of ad spend.
- SEO + content: ₹60,000 – ₹1,75,000 per month.
- Social and community: ₹40,000 – ₹1,20,000 per month.
- Integrated growth retainer: ₹1,50,000 – ₹5,00,000 per month.
Media budget sits on top of these fees. Insist on transparency: you should own the ad accounts, analytics property and domain.
Diligence that actually predicts results
- Ask for two case studies in your category with before/after numbers and the named strategist who ran them.
- Request a 30-minute working session, not a credentials deck — see how they think about your funnel live.
- Check who executes: a senior pitch followed by junior delivery is the most common failure mode.
- Read the exit clause. Thirty-day notice and full asset handover, in writing.
- Agree on one primary metric and a reporting cadence before kickoff.
Signals of a strong partner
Good agencies argue with your brief, quantify trade-offs, and decline work that will not perform. They also connect brand and performance: creative that carries positioning consistently across search, social and landing pages nearly always outperforms channel-siloed execution. If you want an outside read on your current setup, book a free 30-minute brand and growth review.
About this article.
What does a digital marketing agency in Mumbai charge?
Channel retainers typically run ₹40,000 – ₹1,75,000 per month, with integrated growth mandates between ₹1,50,000 and ₹5,00,000 per month plus media spend.
Should I hire in-house or an agency?
In-house is efficient when one channel dominates and volume is steady. Agencies win when you need multi-channel senior expertise without four salaries.
What contract length is reasonable?
Three to six months to see compounding effects, with a 30-day exit and full ownership of accounts and assets.