Ecommerce Advertising: How Much Should Brands Spend?

A D2C brand spends ₹50,000 on Blinkit advertising and generates ₹2 lakh in sales. Encouraged by the results, it doubles its budget to ₹1 lakh.

But sales increase to only ₹3 lakh.

Advertising expenditure doubles, while revenue grows by just 50%.

This is the challenge brands face when competing for visibility on Blinkit, Zepto and Instamart.

As quick commerce becomes more competitive, ecommerce advertising helps brands appear in sponsored search results, category pages and product recommendations.

However, the goal should not be maximum visibility at any cost.

The right advertising budget depends on product margins, competition, conversion rates and the additional sales generated by advertising.

Why Is Quick Commerce Advertising Becoming More Competitive?

Quick commerce platforms have evolved from grocery delivery services into product discovery channels.

Customers now use these platforms to explore skincare, snacks, beverages, household essentials and other categories.

As more brands compete for attention, sponsored placements become valuable for capturing purchase intent.

Consider two protein bar brands on Blinkit.

One already has strong organic visibility, while the other is relatively new.

The newer brand may need advertising to reach customers searching for protein bars. But if the advertising expense exceeds the profit generated by additional orders, visibility becomes expensive rather than valuable.

This is why brands must evaluate advertising alongside their quick commerce profitability.

What Determines Advertising Cost on Quick Commerce Platforms?

Advertising cost varies depending on category competition, campaign format, targeting and placement.

Sponsored product advertisements may use cost-per-click (CPC) pricing, while certain display advertisements may operate on cost-per-thousand-impressions (CPM) models.

The main factors influencing costs include:

• Category competition: Popular categories may attract more advertisers competing for sponsored placements.
• Placement: Search advertisements capture existing purchase intent, while banners support broader product discovery.
• Location: Customer demand and advertising competition can vary between cities.
• Product availability: Advertising out-of-stock products can reduce campaign efficiency.

How Do Blinkit, Zepto and Instamart Advertising Differ?

Blinkit’s Brand Central offers self-service advertising with budget and bidding controls. Zepto’s brand platform also provides customised advertising opportunities.

Actual advertising formats, availability and commercial terms should be confirmed with each platform before investing.

How Much Should Brands Spend on Quick Commerce Advertising?

Instead of choosing an arbitrary advertising budget, brands should calculate how much they can afford to spend acquiring each additional sale.

Consider a skincare brand selling a moisturiser for ₹300.

Figures are illustrative, not actual platform rates.

The brand generates ₹90 before advertising.

If it wants to retain ₹30 per sale, it can spend a maximum of ₹60 acquiring an additional order.

Maximum affordable ad cost = Contribution before advertising − Target contribution after advertising

If the brand targets 800 additional orders monthly:

800 × ₹60 = ₹48,000

This gives the brand a potential monthly advertising budget of ₹48,000, assuming all 800 sales are incremental and product economics remain consistent.

Understanding contribution margin helps founders determine whether additional advertising will improve profitability or simply increase revenue.

How Can Brands Calculate Break-Even ROAS?

Return on ad spend (ROAS) measures the revenue attributed to advertising relative to advertising expenditure.

However, positive ROAS does not necessarily mean a campaign is profitable.

Brands should calculate their break-even ROAS using contribution margin before advertising.

Break-even ROAS = 1 ÷ Contribution Margin

Using the previous example:

• Revenue per unit: ₹300
• Contribution before advertising: ₹90
• Contribution margin: 30%
• Break-even ROAS: 3.33x

The brand needs approximately ₹3.33 in incremental revenue for every ₹1 spent on advertising to cover the included variable costs.

However, to retain ₹30 per additional sale, its target becomes:

₹300 ÷ ₹60 = 5x ROAS

This distinction matters because a campaign generating sales below the required incremental ROAS may increase revenue while reducing profitability.

How Should Brands Allocate Their Advertising Budget?

Once brands understand their spending limits, they should allocate budgets according to purchase intent and expected returns.

For example, a ₹48,000 monthly budget could be distributed as follows:

This is an illustrative allocation, not an industry benchmark.

Sponsored search helps brands reach customers actively looking for relevant products.

Category placements support discovery among customers comparing available options.

Testing campaigns help brands identify profitable products, locations and placements before increasing investment.

A structured D2C marketing budget should balance proven campaigns with controlled experimentation.

Why Does Increasing Advertising Spend Not Guarantee More Revenue?

Increasing advertising expenditure does not necessarily generate proportional sales growth.

Consider the following example:

This assumes attributed sales are fully incremental and carry a constant 30% contribution margin.

Despite higher revenue, the brand moves from positive to negative contribution after advertising.

This demonstrates why businesses should evaluate marginal returns rather than simply increasing budgets.

The same challenge applies beyond quick commerce, where increasing advertising budgets does not guarantee revenue growth.

When Should Brands Increase or Reduce Advertising Spend?

Brands should increase advertising investment when additional spending consistently generates profitable incremental sales.

Before scaling, evaluate:

• Whether product margins can support additional advertising.
• Whether inventory is available in targeted locations.
• Whether conversion rates justify advertising expenditure.
• Whether campaigns generate additional sales rather than replacing organic purchases.

Brands should reconsider spending when advertising costs rise faster than contribution, products already receive strong organic visibility, or low-margin products consume excessive budgets.

The objective is to identify the point where additional advertising stops generating sufficient returns.

How Can Brands Improve Visibility Without Increasing Advertising Costs?

Paid placements are not the only way to strengthen quick commerce visibility.

Brands can improve advertising efficiency by optimising product listings, maintaining consistent inventory availability and prioritising profitable SKUs.

Clear product images, accurate descriptions and relevant keywords can also support purchase decisions.

For categories with frequent repeat purchases, encouraging customer retention can reduce dependence on paid acquisition.

Ultimately, improving product performance helps brands make better use of their existing advertising budgets.

Quick commerce offers brands access to customers who are already considering a purchase. But securing visibility through paid placements comes with financial consequences.

The right advertising budget is not the amount required to appear everywhere. It is the amount that generates profitable incremental sales.

By understanding contribution margins, calculating break-even ROAS and prioritising efficient placements, brands can build a sustainable ecommerce advertising strategy.

If your business is struggling to balance visibility with profitability, Brandshark, a digital marketing agency in Bangalore, can help align creative strategy, performance marketing and customer acquisition with measurable business outcomes. Get in touch to build advertising campaigns that improve visibility without compromising profitability.

Frequently Asked Questions About Ecommerce Advertising

What percentage of revenue should brands spend on quick commerce advertising?

There is no universal percentage. Brands should determine their spending limits based on contribution margins, incremental sales and profitability targets rather than following a fixed industry benchmark.

What is a good ROAS for Blinkit and Zepto advertising?

A good ROAS depends on product margins. For example, a product with a 30% contribution margin before advertising requires approximately 3.33x incremental ROAS to break even on the included variable costs.

How can brands reduce advertising costs on quick commerce platforms?

Brands can improve efficiency by targeting relevant searches, prioritising profitable products and maintaining inventory availability. Regular campaign reviews help identify placements generating insufficient returns.

Ankur Sharma

Ankur Sharma is the founder of Brandshark, a digital marketing and growth agency that helps high-growth brands scale through performance marketing, SEO, and data-driven growth systems.
He has over a decade of experience helping D2C and B2B companies build scalable customer acquisition systems. His expertise includes performance marketing, SEO, conversion optimisation, and growth strategy.