Set Up GA4, GTM & Google Ads Conversion Tracking with GCLID – Cashfree/Razorpay Payments

I am looking for an experienced Google Ads conversion tracking specialist to review, improve, and implement a reliable full-funnel conversion tracking system for my webinar business.

My funnel works as follows:

Google Ads → ₹9 Webinar Purchase → Optional ₹199 Purchase → ₹5,000/₹10,000 Main Program Purchase

The main objective is to give Google Ads complete and accurate funnel/revenue information, so that over time I can optimize campaigns based on users who generate higher revenue rather than only optimizing for the cheapest ₹9 webinar registrations.

Current Setup

I currently use:

- Google Ads
- Google Analytics 4 (GA4)
- Google Tag Manager (GTM)
- Cashfree
- Razorpay
- Pabbly Connect
- Google Sheets
- GCLID capture/storage

Cashfree and Razorpay are used for collecting payments.

Currently, some conversion tracking depends on browser/page-based tracking. I want successful payments to be tracked reliably even if the customer closes the browser, does not reach the Thank You page, or purchases the main program later through a separate payment link.

Tracking Requirements

1. ₹9 Webinar Purchase

Every successful ₹9 payment should be reliably sent to Google Ads with the appropriate:

- GCLID / attribution information
- Conversion value
- Currency
- Transaction/order ID
- Conversion timestamp

Tracking should preferably use successful payment confirmation/webhook data rather than relying only on the Thank You page.

2. ₹199 Optional Purchase

Some webinar customers also purchase an optional ₹199 product.

Google Ads should receive this purchase and its value while maintaining attribution to the original ad click/customer wherever technically possible.

3. ₹5,000 / ₹10,000 Main Program Purchase

This is the most important downstream conversion.

A customer may purchase the main program hours or days after the original ₹9 webinar registration, sometimes through a separate Cashfree/Razorpay payment link.

I want this revenue to be connected back to the original Google Ads acquisition wherever possible, using stored GCLID and/or appropriate first-party customer data.

The purpose is for Google Ads to eventually understand which campaigns, ads, and users are generating actual high-value customers.

Reliability & Deduplication

The implementation should prevent duplicate conversions if the same transaction is received through multiple sources such as:

- Payment gateway/webhook
- GA4
- GTM/browser tracking
- Thank You page

Proper transaction/order IDs and deduplication logic should be implemented.

I do not want Google Ads to count the same payment twice.

Conversion Structure

I would also like the freelancer to advise and implement the appropriate Google Ads conversion structure, including:

- Primary vs. secondary conversion actions
- ₹9 initial purchase
- ₹199 bump purchase
- ₹5,000/₹10,000 main program purchase
- Conversion values
- Enhanced Conversions where appropriate
- Offline/data-import conversions where appropriate

The final architecture should be designed so that Google Ads receives useful signals for revenue/value-based optimization, not simply the maximum number of low-cost ₹9 purchases.

Freelancer Must Have Experience With

Please apply only if you have practical implementation experience with:

- Google Ads conversion tracking
- GCLID capture, storage and matching
- Google Ads offline/data import conversions
- Enhanced Conversions
- GA4
- GTM
- Payment gateway/webhook conversion tracking
- Conversion value tracking
- Transaction ID and conversion deduplication
- Multi-step funnels
- Delayed/offline upsell attribution

Experience with Cashfree, Razorpay and Pabbly Connect will be strongly preferred.

Before Implementation

Before making changes, I would like you to audit my existing setup and clearly explain how you plan to connect:

Original Google Ads Click → ₹9 Purchase → ₹199 Purchase → ₹5,000/₹10,000 Purchase

Please explain:

1. How GCLID/attribution data will be captured and stored.
2. How successful Cashfree/Razorpay payments will trigger conversions.
3. How Pabbly/webhooks will be used, if required.
4. How delayed ₹5,000/₹10,000 purchases will be matched with the original customer/ad click.
5. How duplicate conversions will be prevented.
6. What conversion actions should be Primary vs. Secondary in Google Ads.
7. How the setup will remain reliable even when the Thank You page is not opened.

Expected Outcome

At the end of the project, I want Google Ads to reliably understand not just:

Who purchased the ₹9 webinar?

but also:

Which Google Ads-acquired customers later generated ₹199, ₹5,000 or ₹10,000 in revenue?

The ultimate goal is to provide Google Ads with better-quality conversion and revenue signals so campaigns can eventually be optimized toward customers with higher business value.

Please briefly describe your proposed technical approach when applying rather than sending a generic proposal.