If you've ever typed "how much should I spend on Google Ads per day" into a search bar at 11pm while staring at your Merchant Center account, you're not alone. It's one of the most common questions Shopify store owners ask us, and honestly, there's no single number that works for everyone. A daily budget that's perfectly healthy for a jewellery brand doing ₹40,000 in average order value would starve a low-margin skincare brand selling ₹800 bottles. Budget isn't a fixed rule. It's a math problem tied to your margins, your conversion rate, and how much data Google's algorithm needs to actually learn your audience.
Let's break down how to actually land on a number that makes sense for your store, instead of copying whatever figure a YouTube video told you last year.
Why "how much should I spend" is the wrong first question
Most store owners start with a budget number in mind — say, ₹1,000 a day — because it feels affordable. But Google Ads doesn't care what feels affordable. It cares about signal. Every campaign, especially Performance Max and Shopping, needs enough conversions flowing through it to learn who to target. Starve it of budget and it never leaves the learning phase, which means you're paying to teach the algorithm rather than paying to get sales.
So the better starting question is: what does one conversion cost you, and how many conversions a day does your account need to build enough data to optimise properly?
Work backwards from your cost per conversion
Start with your average cost per click and your site's conversion rate. If your CPC is ₹20 and roughly 1 in 50 visitors buys, you need about 50 clicks to get one sale — so one conversion costs you around ₹1,000. If you want at least one conversion a day while your campaign is still learning, your minimum daily budget should sit around that figure, and ideally two to three times higher so Google has room to test placements, audiences and creative variations without running dry by noon.
This is exactly why we tell clients at Thriftizer's Google Ads service that ROAS obsession is a trap early on. A account with a fat 6x ROAS on paper can still lose money if the margin on each product is thin. Budget planning only works when it's tied to real contribution margin — what's left after cost of goods, shipping, payment fees and returns — not the ROAS number that looks good in a screenshot.
A rough framework by monthly ad spend
While every store is different, here's a general range that tends to work for Shopify brands running Shopping and Performance Max campaigns:
- Under ₹50,000/month (~₹1,600/day): Fine for testing a single, high-margin product or validating a new market. Expect a longer learning phase and don't expect Performance Max to perform well this low.
- ₹1,50,000–₹3,00,000/month (~₹5,000–₹10,000/day): The range where most mid-size D2C stores start seeing consistent, optimisable data. This is also roughly the floor where professional management starts to earn its fee rather than eating the budget.
- ₹5,00,000/month and above (~₹16,000+/day): Enough room to run brand and non-brand campaigns separately, test multiple asset groups in PMax, and expand into new markets or product lines without one campaign starving another.
These aren't hard rules, just a sanity check. A furniture brand with a ₹15,000 average order value can run profitably on a smaller daily budget than a brand selling ₹500 accessories, simply because each conversion is worth so much more.
Watch out for budget getting eaten by the wrong things
A daily budget that looks reasonable on paper can still disappear fast if the account structure is off. Branded search terms competing against your own Performance Max campaign, a bloated product feed with missing GTINs, or auto-applied Google recommendations can all quietly drain spend on traffic you'd have gotten anyway. We wrote a full breakdown of this in why your Google Ads budget disappears quickly if you want the specifics — it's usually not the daily cap that's the real problem, it's what's consuming it.
Don't cut budget when CPC rises — fix the feed first
A rising cost per click often triggers a knee-jerk reaction to lower the daily budget, but that usually makes things worse, not better. Cutting spend before you've addressed feed quality, negative keywords or landing page relevance just means fewer clicks at the same inflated price. There's a more useful sequence for this, covered in how to reduce cost per click without losing leads, which walks through fixing the actual cause of expensive clicks rather than just spending less on them.
What actually moves the needle isn't just the ad budget
Here's something that surprises a lot of store owners: a store with a strong daily ad budget but a slow-loading, cluttered checkout page will still bleed money. If your conversion rate is stuck at 1% while a competitor in your category converts at 3%, you're effectively paying triple for every sale. Before increasing your budget further, it's worth checking whether the landing pages your ads point to are actually built to convert. This is where conversion rate optimisation comes in — sometimes the highest-return move isn't a bigger budget, it's fixing what happens after the click.
The honest bottom line
There's no universal "good" daily budget for Google Ads. What matters is whether your budget is large enough to generate at least a handful of conversions a day so the algorithm can learn, and whether that spend is tied to a target you can actually afford based on your margins — not a ROAS figure that sounds impressive but loses money in practice. Start with your numbers, not a template.
If you're not sure where your account currently stands, it's worth getting a second pair of eyes on it before changing your budget blindly. Thriftizer offers a free store audit that looks at your ad account, feed quality and tracking setup, and tells you what to fix first — whether or not you end up working with us.
FAQs
Is ₹1,000 a day enough for Google Ads?
It depends entirely on your cost per conversion. If a single sale typically costs you ₹1,000 in ad spend, then ₹1,000 a day barely gets you one conversion, which isn't enough data for the algorithm to optimise well. For most Shopify stores, a budget of two to three times your average cost per conversion is a safer starting point.
Should I increase my budget slowly or set it high from the start?
Gradual increases, roughly 20% every few days, tend to work better than sudden jumps. Google's algorithm resets some of its learning when budgets change too sharply, which can temporarily spike your cost per click.
Does Performance Max need a bigger budget than Search campaigns? Generally yes, because PMax spans Shopping, Display, YouTube and more, so it needs more data across more channels to learn efficiently. Underfunded PMax campaigns often default to spending on branded search, which inflates ROAS without bringing in new customers.
How do I know if my daily budget is too low?
Common signs include campaigns stuck in "Limited by budget" status in Google Ads, impression share reports showing lost impressions due to budget, or a cost per click that keeps rising because you're losing auctions to competitors with bigger budgets.
Should I set a daily budget or a monthly campaign budget?
Daily budgets give you more granular control and are easier to adjust based on performance trends. Monthly budgets can average out spikes but make it harder to react quickly if a campaign starts overspending on the wrong queries.
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