What is a Good ROAS for Google Ads in Australia? (2025 Benchmarks)

What is ROAS and How Do You Calculate It?

ROAS — Return on Ad Spend — measures the revenue generated for every dollar spent on advertising. It is the most commonly used efficiency metric in Google Ads campaigns, particularly for ecommerce and direct-response campaigns.

The ROAS Formula

The calculation is straightforward:

ROAS is typically expressed as a multiplier (4x, 6x, 8x) or as a percentage (400%, 600%, 800%). Both mean the same thing — for every dollar spent, you generated four, six, or eight dollars in revenue.

ROAS vs. ROI

ROAS and ROI (Return on Investment) are often confused. The key difference: ROAS only measures revenue against ad spend. ROI accounts for all costs — including cost of goods sold, fulfilment, agency fees, and overheads. A campaign with a 5x ROAS might still be unprofitable if your gross margin is 15%.

This is why the most important ROAS metric for your business is your break-even ROAS — the ROAS at which you are not losing money on advertising after accounting for product costs.

Calculating Your Break-Even ROAS

An Australian ecommerce business with a 25% gross margin needs at least 4x ROAS just to break even on ad spend — and significantly higher to be profitable after accounting for other overheads. Understanding your break-even ROAS is more useful than any industry benchmark.

AU Industry ROAS Benchmarks for 2025

The following benchmarks are based on Australian Google Ads data across industries. They represent the range a well-managed, mature campaign can reasonably expect to achieve — not a new campaign in its first 30 days, and not a poorly structured account.

Important caveat: These are benchmarks for revenue-attributed ROAS — where conversions are tracked directly through Google Ads. If you are running lead-generation campaigns rather than direct ecommerce, ROAS is harder to measure precisely and CPA (cost per acquisition) is typically a more useful metric. See the ROAS vs. CPA section below.

Factors That Affect ROAS in the Australian Market

Gross Margin

The single biggest determinant of what ROAS is viable for your business. An Australian supplement brand with 70% gross margins can be profitable at 2x ROAS. An Australian electronics retailer with 12% gross margins needs 8x ROAS or more to justify their ad spend.

Australian CPCs Are Generally Higher Than Global Averages

Australia's Google Ads cost-per-click is consistently 20-40% higher than the global average across most categories. Key AU CPC benchmarks in 2025:

• Legal services: $15 – $50 per click
• Finance / mortgage: $10 – $35 per click
• Real estate: $5 – $20 per click
• Home services: $4 – $15 per click
• Ecommerce (competitive categories): $0.80 – $4 per click
• Healthcare: $3 – $12 per click

Higher CPCs mean you need either a high conversion rate, a high average order value, or a high customer lifetime value to generate acceptable ROAS.

Market Competition

In major Australian cities — Sydney, Melbourne, Brisbane — competition for high-intent keywords is fierce. A plumbing company running Google Ads in inner Sydney faces far higher CPCs than one in a regional Queensland town. Regional Australian markets often deliver better ROAS due to lower competition, even accounting for smaller audience sizes.

Seasonality

Australian seasonality is the inverse of Northern Hemisphere patterns. Summer (December-February) is peak for outdoor, travel, and leisure. The EOFY (End of Financial Year — May/June) is a major ecommerce and B2B spending period. January is typically slow for B2B. CPCs and competition fluctuate significantly across these periods, directly impacting ROAS.

Conversion Rate and Landing Page Quality

ROAS is directly tied to how well your landing pages convert visitors into customers. A campaign driving traffic to a slow, poorly designed landing page will see dramatically lower ROAS than the same campaign driving to a fast, well-structured page with a clear offer and trust signals. This is an area where AU businesses frequently under-invest relative to their ad spend.

How to Improve Your ROAS

If your current ROAS is below your break-even threshold — or simply below the benchmarks for your industry — here are the highest-leverage levers to pull.

1. Tighten Keyword Targeting

Broad match keywords in a poorly structured account are a primary driver of wasted spend and low ROAS. Audit your Search Terms report to find irrelevant queries consuming budget. Switch high-spend, low-conversion keywords to phrase or exact match. Add a comprehensive negative keyword list.

2. Improve Your Landing Pages

A landing page that converts at 3% instead of 1% effectively triples your ROAS with zero increase in ad spend. Test: headline clarity, page load speed (target under 2.5 seconds on mobile), social proof (reviews, client logos, case study numbers), a single clear call-to-action, and mobile-first design. Most Australian traffic comes from mobile — desktop-focused pages consistently underperform.

3. Raise Average Order Value

If you can increase your average transaction value through upsells, bundles, or minimum order incentives, your ROAS improves automatically. A $150 average order at 3x ROAS is less profitable per ad dollar than a $220 average order at 3x ROAS from the same campaign.

4. Improve Audience Targeting

Use audience layering to concentrate budget on high-converting segments: past purchasers (remarketing), similar audiences, Customer Match lists (upload your email database), and in-market segments relevant to your category. Restricting spend to warm audiences typically improves ROAS by 30-60% in Australian ecommerce accounts.

5. Leverage Smart Bidding Correctly

Google's Target ROAS smart bidding strategy can outperform manual bidding — but only once your campaign has sufficient conversion data (minimum 30-50 conversions in the last 30 days). Setting a target ROAS too high too early causes the algorithm to restrict volume while chasing an unachievable target. Set your initial tROAS at 10-15% above your current actual ROAS, then increase gradually.

6. Fix Conversion Tracking

One of the most common causes of 'low ROAS' in Australian Google Ads accounts is incomplete conversion tracking — not an actual performance problem. Audit your conversion actions: are phone calls tracked? Are thank-you page conversions firing on every sale? Is GA4 connected and importing goals? Inaccurate tracking means the algorithm is optimising blind.

ROAS vs. CPA — Which Should You Optimise For?

For many Australian businesses — particularly service-based businesses, lead generation campaigns, and B2B companies — ROAS is the wrong primary metric. Here is a simple decision framework:

• Use ROAS when you track revenue directly through Google Ads: ecommerce stores with purchase conversion tracking, online booking systems with order values, or any campaign where the transaction value is recorded at the point of conversion.
• Use CPA (cost per acquisition/lead) when your campaigns generate leads that convert offline: service businesses, real estate, professional services, B2B, or any situation where a phone call or enquiry form submission is the conversion event rather than a purchase.

For a Sydney law firm, a $120 cost per enquiry with a 20% close rate and $8,000 average case value is an excellent result — but if you only track CPA without understanding close rates and average case value, you have no way to evaluate whether that $120 CPA is generating profit. Build the full funnel calculation: CPA → close rate → average case value → margin → net return per lead.

Setting Realistic ROAS Expectations

If you are launching a new Google Ads campaign, expect a 60-90 day ramp period before ROAS benchmarks are meaningful. Here is a realistic timeline for a new AU Google Ads campaign:

• Weeks 1-2: Campaign learning phase. Google is gathering data. ROAS will be volatile and often below target. Do not make major changes during this period.
• Weeks 3-4: Initial optimisation. Pause non-performing keywords, add negatives, adjust bids. ROAS begins to stabilise.
• Month 2: Smart bidding (if used) begins to mature with sufficient conversion data. ROAS should be approaching your target or providing clear data on what adjustments are needed.
• Month 3+: A well-managed account should be at or approaching industry benchmark ROAS. This is the point for strategic decisions: scale what is working, cut what is not, and test new ad groups or campaign types.

Any agency or consultant promising a specific ROAS from day one is overpromising. Google Ads requires data to optimise — and that data takes time and budget to accumulate.