Google Ads Setup Guide for NZ Small Business (2026)

Last updated: April 2026 · Written by 20 Minute Marketing · 9 min read

Most NZ small businesses running Google Ads are wasting 30–60% of their budget on clicks that will never convert. This 20-minute audit identifies the three most common budget wasters and shows you exactly where to find them in your account — no agency required.

Before you start: open Google Ads, navigate to your account, and have Search Console open in a separate tab. You’ll need both for this audit.

Budget Waster 1: Broad Match Keywords With No Negative Keywords

📘 Want the full picture? Read our how Kiwi businesses choose courses — the complete pillar guide this article is part of.

Broad match keywords trigger your ads for searches that are loosely related to your keyword — including many that will never lead to a conversion. A plumber bidding on the broad match keyword “plumbing” can get charged for searches like “plumbing courses,” “plumbing jobs,” “plumbing supplies cheap,” and “DIY plumbing fix.” None of those people want to hire a plumber.

The audit:

1. Go to Keywords → Search Terms in Google Ads
2. Filter the date range to the last 30–90 days
3. Sort by Cost (highest first)
4. Look for search terms that spent money but are completely irrelevant to your business

The fix: Add irrelevant search terms as negative keywords (Keywords → Negative Keywords). For every irrelevant term you’ve been paying for, add it as a negative keyword so future searches for that term don’t trigger your ads. Most accounts identify $200–$800/month in wasted spend at this step alone. For new campaigns, start with phrase match or exact match keywords rather than broad match to minimise irrelevant traffic from the start.

Budget Waster 2: Ads Running Outside Business Hours or Service Area

Clicks at 2am from people in suburbs you don’t service are pure waste. Most small business accounts don’t have ad scheduling or geographic targeting set correctly.

The audit:

1. Go to Campaign → Settings → Location
2. Check whether you’re targeting your exact service area or a broad region
3. Go to Campaign → Ad Schedule
4. Check whether ads are running 24/7 or only during your operating hours

The fix: For location targeting, use “Presence” (people physically in your target area) rather than “Presence or interest” which includes people who have shown interest in your area from anywhere in New Zealand. For scheduling, run ads during your business hours plus 2 hours either side (people searching at 7am for a plumber still want to book for the same day). Turning off overnight and weekend ads often produces the same leads for 20–30% less spend for local service businesses.

Budget Waster 3: Low Quality Score Keywords Inflating CPC

Google’s Quality Score (1–10) measures how relevant your ad, keywords, and landing page are to the user’s search. Low Quality Score means you pay more per click for the same position than a competitor with a higher score. Keywords with a Quality Score of 4 or below are typically costing you 2–3x what they should.

The audit:

1. Go to Keywords tab
2. Add the Quality Score column (customise columns → Quality Score)
3. Sort by Quality Score (lowest first)
4. Identify keywords with QS 4 or below that are spending significant budget

The three components of Quality Score: Expected CTR (does your ad get clicked when shown?), Ad Relevance (does your ad copy match the search intent?), and Landing Page Experience (does your landing page deliver what the ad promised?). The fastest fix for low Quality Score: ensure your ad copy includes the exact keyword, and ensure your landing page headline matches the keyword the user searched for. A landing page that says “Hot Water Repairs Ringwood” converts better than a generic homepage — and Google rewards it with a lower CPC.

Your 20-Minute Audit Checklist

Frequently Asked Questions

How often should I run this audit on my Google Ads account?

The Search Terms audit (Budget Waster 1) should be done weekly for active campaigns — new irrelevant searches appear constantly as Google’s match types evolve. Location and scheduling checks (Budget Wasters 2 and 3) need only a monthly review unless you change your service area or hours. A full audit of all three takes 20 minutes and should be a monthly habit for any account spending over $500/month.

My Google Ads agency does monthly reporting but I never see these issues flagged. Should I be concerned?

Yes — negative keyword management and Quality Score issues should appear in any competent agency’s monthly reporting. If they don’t, either the account isn’t being actively managed or the reporting is designed to show metrics that look positive rather than ones that indicate problems. Understanding this audit yourself gives you the ability to ask specific, informed questions of any agency managing your account. See our agency vs DIY comparison for the full evaluation framework.