I once took over a Google Ads account for a chain of diagnostic centers in Pune. They were spending Rs. 1.2 lakhs a month on standard search ads driving traffic to a landing page where users had to fill a form to book an appointment. Conversion rate: 2.3 percent. Cost per booked appointment: Rs. 740. We paused the landing page campaigns and launched call-only ads targeting the same keywords - 'blood test near me', 'full body checkup Pune', 'MRI scan center'. Within 30 days, the cost per booked appointment dropped to Rs. 210. The conversion rate on the calls was 28 percent. Users did not want to fill a form. They wanted to speak to someone and book immediately.
Call-only ads are Google's most underutilized ad format in the Indian market. They let users call your business directly from the search results page with one tap on their phone. No landing page, no form, no friction. For Indian service businesses where the sale happens over the phone - and that is most of them - call-only ads consistently outperform standard search campaigns on cost per lead by 2-4x. This guide covers everything I have learned about making them work.
When Call-Only Ads Outperform Landing Pages
The core insight is simple: different purchase journeys need different ad formats. A user searching 'best running shoes under 3000' wants to browse products, compare prices, and make a decision. Send them to a product page. A user searching 'emergency plumber near me' wants a human on the phone in the next 30 seconds. Sending them to a landing page with a contact form is actively worse for both the user and your business.
I use a simple test to decide: does your business close more than 50 percent of its sales over the phone? If yes, call-only ads should be your primary Google Ads format. This applies to plumbing, electrical work, AC repair, pest control, locksmiths, healthcare providers, legal services, insurance agents, real estate brokers, tutoring services, and any business where the customer needs to describe their situation before getting a quote.
For businesses where the answer is mixed - say, an interior design firm where small projects close over the phone but large projects need a consultation - run both formats. Use call-only ads for high-intent, urgent keywords like 'interior designer for 2BHK near me' and standard search ads for research-oriented keywords like 'modern interior design ideas for 3BHK'. For more on structuring your account for different intent levels, see the lead gen ads playbook for Indian service businesses.
Setting Up Call-Only Ads the Right Way
Creating a call-only ad in Google Ads is straightforward - choose the 'Call-only' ad type when creating a new ad. But the setup that makes them profitable is more nuanced. First, enable Google forwarding numbers. This is not optional. Without forwarding numbers, you cannot track which calls came from your ads versus other channels, and you cannot measure call duration or count calls as conversions. Google forwarding numbers are free and available for Indian phone numbers.
Second, set your conversion action correctly. In Google Ads, create a 'Calls from ads' conversion action with a minimum call duration of 30-60 seconds. Calls shorter than 30 seconds are almost never qualified leads - they are wrong numbers, prank calls, or people who hung up immediately. I typically set 45 seconds for Indian service businesses. If your average qualified call lasts 3-5 minutes, a 45-second threshold filters out 80-90 percent of junk calls while capturing all real leads.
Third, bid higher than you think. Call-only ads need higher bids than equivalent standard search ads because the quality of the lead is higher - someone who picks up the phone is further along in their buying journey than someone who clicks a link. I start with bids 30-50 percent higher than my standard search campaign bids for the same keywords, then adjust based on cost-per-qualified-call data. For high-ticket services, use Target CPA bidding once you have 30-plus conversions in the past 30 days.
| Industry | Typical Cost-Per-Call (Rs.) | Call Conversion Rate | Best Bid Strategy |
|---|---|---|---|
| Home Services (plumbing, electrical, AC) | 30-70 | 25-35% | Maximize Conversions with CPA cap |
| Healthcare (clinics, diagnostics) | 60-120 | 20-30% | Target CPA after 30 conversions |
| Legal Services | 100-250 | 15-25% | Manual CPC, then Target CPA |
| Real Estate | 120-300 | 10-20% | Maximize Clicks then Target CPA |
Call-Only Ad Copy That Converts in India
Call-only ad copy is different from standard text ad copy. Users see your business name, phone number, two headlines (30 characters each), and a description (90 characters). That is it. Every character counts. The most effective headlines in Indian service campaigns follow a pattern: action verb plus service plus location or benefit. 'Call Plumber Mumbai - 30 Min' performs better than 'Best Plumbing Services in Mumbai'. 'Speak to a Lawyer - Free' outperforms 'Legal Consultation Available'.
One technique I have found particularly effective for Indian audiences: include hours of operation or availability in the description. 'Open now. Hindi, English, Marathi speaking staff. Same-day service.' This answers the three questions every Indian service seeker has: are you available right now, can I communicate comfortably, and how fast can you help me. For more on writing ad copy that converts Indian audiences, see writing ad copy that converts in India. And if you want to lower your cost per lead systematically, check how to lower your CPL on Google Ads without killing quality leads.
Pricing in the ad copy is a double-edged sword. If your pricing is competitive, include it - 'AC Repair from Rs. 299' - and you will filter out price-sensitive callers who would not convert anyway. If your pricing is premium, do not put it in the ad; let the phone conversation handle the value justification. In either case, never put fake low pricing to generate calls. Those calls will not convert, and you will burn budget on unqualified leads.
Call Handling: The Half of the Equation Most Businesses Ignore
The best call-only ad campaign in the world will fail if nobody answers the phone. This sounds obvious, but I have audited Indian service business accounts where 40-50 percent of calls from ads went unanswered or to voicemail. That is 40-50 percent of the ad budget completely wasted. Before you spend a single rupee on call-only ads, ensure someone is available to answer the phone during all hours your ads run.
Train your team on the calls. The first 15 seconds of a call from an ad determine whether it converts. The person answering should state the business name, their name, and an open-ended question: 'ABC Plumbers, this is Rajesh. How can I help you today?' They should not put the caller on hold immediately (the number one complaint I hear from Indian callers), and they should be trained to ask qualifying questions naturally: location, urgency, rough budget. Record the calls if legally permissible - reviewing recordings is the fastest way to improve conversion rates.
For businesses with multiple locations or service areas, set up location-based call routing. Google Ads can show different phone numbers or route calls based on the user's location. A plumbing business serving Mumbai, Thane, and Navi Mumbai can route calls from each area to the nearest team. This improves response times and conversion rates because the team can arrive faster.
Measuring What Matters: Beyond Call Volume
Call volume is a vanity metric. Call quality is what pays the bills. Track three metrics per campaign: call answer rate (answered calls divided by total calls - aim above 85 percent), qualified call rate (calls meeting your criteria divided by total calls - varies by industry but 50 percent is a good floor), and cost per qualified call (total ad spend divided by qualified calls). Cost per qualified call is your north star metric for call-only campaigns.
If you have a CRM, integrate call data with deal tracking. Tie each call to a deal stage: lead, qualified, proposal sent, won, lost. This gives you true cost per acquisition and ROAS for your call-only campaigns. A Chennai-based legal services client I work with tracked this end-to-end: cost-per-call was Rs. 180, cost-per-qualified-call was Rs. 380, and cost-per-client-acquired was Rs. 1,920. Average case value was Rs. 25,000. That is 13x ROAS - all from call-only ads. They would never have known this without CRM integration.
Common Mistakes That Kill Call-Only Ad Performance
The biggest mistake I see: running call-only ads on keywords that are not phone-ready. 'plumber salary India' or 'how to fix AC not cooling' are informational queries. The searcher does not want to call anyone. They want information. Running call-only ads on these keywords generates clicks from curious users who immediately hang up when they realize it is a call - burning your budget on zero-conversion calls.
Second mistake: using the same bid across all hours. Call conversion rates vary significantly by time of day in India. For home services, conversion rates peak between 9-11 AM and 4-6 PM. For healthcare, 9 AM-12 PM dominates. Use bid adjustments by hour to increase bids during high-conversion windows and decrease or pause during low-conversion windows. A 20 percent bid increase during your peak 3-hour window can lift total conversions by 30 percent without increasing overall spend proportionally.
Third mistake: not building negative keyword lists aggressively. Call-only ads attract accidental clicks from users who did not intend to call. Add 'jobs', 'salary', 'career', 'review', 'free', 'online' as negative keywords if they are not relevant to your phone-based service. Review your search terms report weekly and add anything that generates calls but not qualified leads.
How Vedam Vision Helps
We set up and optimise call-only ad campaigns for Indian service businesses that want more qualified phone leads at lower cost. From keyword strategy to ad copy to call tracking integration, we build the full system. If your Google Ads are sending people to landing pages but your business closes deals on the phone, call-only ads are likely your highest-ROI channel. Get in touch and we will analyze whether call-only ads fit your business.
