How much should I budget per month for Google Shopping ads?

Smart Bidding learns from conversions. It needs a steady stream of clicks and sales to work out which auctions are worth entering, and that stream costs money to generate. We launch accounts at 30 to 50 euros a day: 30 is the bare minimum that can work, 50, close to 1,500 euros a month, is the comfortable floor where most stores gather signal at a decent pace. More budget just means faster learning.

Well below that, the campaign is not cheaper, it is slower and blinder. Ten euros a day buys a handful of clicks, the conversions trickle in too slowly to form a pattern, and the campaign sits in a permanent learning phase. You spend less per month and waste a bigger share of it. That is the trade nobody mentions when they promise Shopping works on any budget.

Any article that names one exact monthly budget for every store is guessing. Your right number depends on your product price, your margin, your niche's click costs, and your country. A store selling 300-euro furniture needs more budget per sale than a store selling 30-euro accessories, simply because each conversion takes more clicks to find at a higher price per click.

So treat published numbers as ranges, including ours. The 1,500-euro floor is where learning stops being a crawl, not a promise that it is enough for your niche. Competitive niches with expensive clicks need more before the data adds up. The only budget figure that is precisely true for your store is the one your own account produces after a few weeks of real spend.

Start at the floor you can hold steadily, not the peak you can afford once. A consistent 50 euros a day for weeks beats 150 a day for one week followed by panic cuts, because every big budget swing muddies the data the algorithm is trying to learn from.

Treat the first month as tuition. The job of early spend is to buy data: which products convert, what a click costs in your niche, where the sales come from. Judge the setup after a few weeks, not after day three.

Then scale from evidence. When the account is profitable and stable, raise the budget in steps and watch whether results hold. That is how ZenoX runs it across 200+ ecom brands: the floor buys the learning, the results earn the increases.