Introduction
A Shared Budget Strategy in Google Ads allows advertisers to allocate a single daily budget across multiple campaigns within the same Google Ads account. Instead of assigning a separate daily budget to each campaign, you create one shared pool of budget, and Google automatically distributes the spend among the selected campaigns based on performance and opportunity. This strategy helps ensure efficient use of ad spend and simplifies budget management, especially for advertisers managing multiple campaigns targeting similar goals or audiences.
How It Works
When you set a shared budget, you group two or more campaigns together under one budget umbrella. Google then dynamically reallocates the budget between those campaigns depending on how each one is performing and how much traffic they’re able to get. For example, if Campaign A underperforms or doesn’t spend much on a given day, Google will shift the remaining budget to Campaign B or C if they can use it effectively. This flexible approach avoids underspending and helps maximize conversions or clicks across the group of campaigns.
Benefits of Shared Budget Strategy
Simplified Budget Control
Instead of managing ten separate daily budgets, you can control them all through one shared budget. This is especially useful for agencies or businesses like Zara or Myntra that run many campaigns for different collections or product categories.
Efficient Use of Budget
If one campaign doesn’t use its daily allocation due to low traffic or performance, the remaining funds can be automatically redirected to another campaign with better traffic or higher conversion potential.
Faster Campaign Launch
With a shared budget, you can set up new campaigns quickly without needing to calculate a new daily budget for each one.
Improved Campaign Flexibility
You can group together campaigns with similar themes or targeting goals, giving Google more flexibility in how it spends your budget to drive better results.
Avoid Budget Waste
Instead of capping spend on high-performing campaigns because of fixed daily limits, shared budgets let Google optimize across the entire campaign set to drive more value from your overall spend.
When to Use Shared Budgets
When you’re running multiple campaigns with similar targeting or objectives
When your daily ad budget is limited and you want Google to allocate spend dynamically
When you don’t want to constantly micromanage campaign budgets
When you’re testing multiple campaigns but want to control total spend
When you want to group campaigns by product type, audience, or region
When Not to Use Shared Budgets
When you want precise control over each campaign’s daily spend
When your campaigns target different geographies or have very different goals
When some campaigns need to follow strict budget caps due to client or internal restrictions
When running campaign experiments that require isolated budgets
When you want to measure the performance of each campaign independently in terms of budget efficiency
Example: Shared Budget for Zara
Zara runs three campaigns: Campaign 1 for Women’s Apparel, Campaign 2 for Men’s Shoes, and Campaign 3 for Accessories. Instead of assigning ₹1,000/day to each campaign, they set a shared budget of ₹3,000/day across all three. On a particular day, if Campaign 1 and Campaign 2 are low on search traffic and only spend ₹1,200 together, Google can automatically assign the remaining ₹1,800 to Campaign 3 if it’s seeing better performance and higher search volume. This ensures Zara doesn’t leave ad budget unspent while maximizing overall return on investment.
How to Set Up a Shared Budget
Log in to your Google Ads account
Click on Tools & Settings at the top of the page
Under Shared Library, click on Shared Budgets
Click the plus (+) button to create a new shared budget
Name the budget (e.g., Zara Holiday Campaign Budget)
Set the daily budget amount
Select which campaigns will use this shared budget
Click Save
Once saved, all selected campaigns will start drawing from the shared pool.
Monitoring and Optimizing Shared Budgets
Regularly review how the shared budget is being distributed among your campaigns
Use Google Ads reports to monitor performance per campaign even under a shared budget
Adjust which campaigns are included in the budget pool if you notice one is underperforming
If necessary, split high-performing campaigns into separate budgets to give them more control
Use Google Ads automated rules to pause or adjust campaigns that are spending too much or underperforming
Real Brand Example: Myntra
Myntra runs ten different campaigns for product categories like T-shirts, jeans, sneakers, watches, and bags. Instead of assigning individual daily budgets of ₹500 each, they set a shared budget of ₹5,000 across all ten. On days when sneakers and watches get more clicks and conversions, Google shifts more of the budget to those two campaigns while still maintaining delivery for the others. This helps Myntra get the highest ROI from its daily ad spend without manually updating budgets for each campaign.
Conclusion
A Shared Budget Strategy in Google Ads is an efficient and smart approach for advertisers running multiple campaigns with similar goals. It allows you to manage ad spend more flexibly and get better performance by letting Google automatically allocate the budget where it’s most needed. Brands like Zara, Myntra, and Skechers benefit from shared budgets by reducing budget waste, improving scalability, and simplifying account management. However, while shared budgets offer convenience, it’s important to monitor performance closely and be strategic in how you group campaigns to ensure you’re getting the best possible return from your ad investment.
