How to lower your ACoS on Bol: 5 proven strategies

A high ACoS is every Bol advertiser’s nightmare. You’re making sales, but after deducting ad costs, not enough is left. The good news: lowering ACoS is a matter of the right approach, not more budget.

In this article, we cover 5 proven strategies Bol sellers use to systematically reduce their ACoS.

What is a good ACoS on Bol?

It depends on your margin. A product with 50% margin can sustain an ACoS of 30%. But for a product with 20% margin, 15% is already dangerous. Always calculate your break-even ACoS: margin% = maximum ACoS.

A good rule of thumb: aim for an ACoS of 50-70% of your margin. This keeps your advertising profitable.

Strategy 1: Clean up your search terms

The fastest way to lower ACoS is to stop paying for irrelevant clicks. Analyze your search term reports weekly:

Which search terms generate clicks but no conversions?
Which search terms are clearly irrelevant to your product?

Add these as negative keywords. The effect is immediate: less wasted budget = lower ACoS.

Advindix tip: With Keyword Harvesting, Advindix automatically analyzes your search term reports and gives recommendations for negative keywords. This saves you hours of manual work.

Strategy 2: Use match types strategically

Broad match attracts a wide mix of search terms — including many irrelevant ones. Use broad match only in discovery campaigns with a lower budget.

For your best search terms, use phrase or exact match. This gives you more control over which search queries trigger your ad and improves your conversion rate.

Strategy 3: Optimize your product listings

ACoS is also determined by your conversion rate. A higher conversion rate = same budget, but more sales = lower ACoS.

Invest in:

Main image: Eye-catching, clean background, product clearly visible
Bullet points: Benefit-focused, not just specifications
Price: Competitive relative to similar products
Reviews: More reviews = higher conversion rate

Strategy 4: Use dayparting

Not every hour of the day is equally valuable. Analyze which hours and days your conversions occur. Turn off campaigns during hours with low conversion rates — even if there are clicks.

This effectively lowers your average CPC and improves your ACoS. On Bol, you’ll see patterns per day of the week and per hour.

Strategy 5: Automate with Smart Rules

Manual bid adjustments are time-consuming and reactive. Smart Rules in Advindix let you optimize proactively.

Set a rule like: “If the ACoS of this keyword over the last 14 days is higher than 25%, decrease the bid by 15%.” Advindix executes this automatically — even while you sleep.

Combine this with rules that reward well-performing keywords: “If ACoS < 10%, increase bid by 10%.” This way you scale winners automatically and brake losers.

Summary

Lowering ACoS is not a one-time action but an ongoing process. The sellers who perform best combine:

Weekly search term cleanup
Smart use of match types
Continuous product listing optimization
Data-driven dayparting
Automated rules that optimize 24/7

Want this automated? Try Advindix free for 14 days — no credit card needed.