How much should you pay someone to manage your Google Ads?
A Google Ads management fee in New Zealand typically runs 10 to 20% of what you spend on ads, or a flat monthly retainer from a few hundred dollars for a small account. The number matters less than two things most owners never check: what the fee is supposed to buy, and whether you end up owning the account or renting a seat in it.
This guide covers what a management fee should include, how the two common pricing models age differently as spend grows, the ownership question that costs people more than the fee itself, and when running the account yourself is the better call.
What a management fee should actually cover
A Google Ads management fee should cover six things: the keyword list, bid and budget management, ad copy testing, conversion tracking, Performance Max upkeep and reporting tied to sales, not clicks. Managing a Google Ads account properly means doing each of these, and a quote that skips most of them is cheap for a reason.
- Keyword and negative keyword work. Adding search terms that convert and excluding the ones that waste clicks, checked weekly, not set once and left.
- Bid and budget management. Moving spend toward what is working inside the month, not just reporting on it after the fact.
- Ad copy and asset testing. Writing new headlines and descriptions, testing them against what is already running, and retiring the losers.
- Conversion tracking. Making sure Google knows which clicks turned into a form fill, a call or a sale, not just a page view.
- Performance Max asset feeds. Keeping the images, headlines and audience signals current if any part of the account runs PMax.
- Reporting tied to leads or sales. A monthly number you can read against what actually came in the door, not a screenshot of clicks and impressions.
A quote that looks unusually low is normally missing one or two of these, most often conversion tracking and ongoing testing. You pay for the account to run properly, week in and week out, not for someone to glance at it once a month and send a screenshot.
Why a percentage fee behaves differently as spend grows
NZ agencies charge one of two ways: a flat monthly retainer, or a percentage of ad spend, typically 10 to 20%, on top of a smaller base fee. We've covered the general pricing bands in how much Google Ads cost in NZ. What that guide doesn't cover is how the two models age as the account grows.
| Monthly ad spend | 15% of spend | What actually changed in the work |
|---|---|---|
| $2,000 | $300 | One campaign, one keyword list, weekly checks |
| $4,000 | $600 | Same campaign, same keyword list, same weekly checks |
| $8,000 | $1,200 | Maybe a second campaign or a new PMax asset group, not four times the work |
The fee doubles every time spend doubles. The hours on the account do not, because most of a Google Ads manager's time goes into the keyword list, the ad copy and the tracking, not into moving a budget slider. Past roughly $4,000 to $5,000 a month in spend, a flat retainer is the better deal. Below that, a percentage fee is fair, because a small account's low fee roughly matches the time it actually takes.
Who owns the account matters more than the price
Account ownership means holding administrator access to your own Google Ads account, under your own email, independent of whoever manages it. Ask this before you ask about price: whose login is the account under? If it sits inside an agency's manager account and you never get your own administrator access, you do not own the account. You rent a seat in it.
The same question applies to three other places data lives:
- Conversion tracking. If the conversion actions and the Google Analytics or Tag Manager setup sit under the agency's own logins, leaving them means losing a year or more of conversion history.
- Search term and negative keyword history. The negative keyword list is the single most valuable thing an agency builds over time. A fresh account starts that list from zero.
- Performance Max audience signals. These train on your account's own data and reset if you move to a new account structure.
None of this shows up on a pricing page. Ask for administrator access under your own email before you sign, and get it in writing that it stays with you if you leave.
Lock-in contracts and minimum terms
A low monthly fee attached to a long lock-in is not a low price. It's a price plus an option you've sold the agency for free. Three terms are worth reading closely before you sign anything:
- Contract length. Month to month lets you leave if the account isn't performing. A long minimum term protects the agency, not you, in the first few months while the account is still being set up.
- Minimum ad spend. Some fee structures only work above a set spend, which means the quoted percentage was never the real number.
- Exit notice. Thirty days is normal. Ninety is a flag.
None of these change what the account costs to run day to day. They change how much it costs you to find out it isn't working.
The ad spend and the management fee arrive as two separate bills
Google bills your card or your billing profile directly for clicks, on its own schedule, whether or not the agency's invoice has been paid. The management fee is a completely separate charge from whoever runs the account. Confusing the two causes two real problems.
First, if you stop paying the agency but never pause the campaigns yourself, Google keeps charging your card. Cancelling a management contract is not the same action as pausing the ads, and nobody else will do it for you unless you ask in writing.
Second, ask who holds the billing profile itself, not just who logs in to optimise. A billing profile under the agency's own payment method, rather than your business's, means a card or bank account that isn't yours is the one keeping your ads live. Put the billing profile on your own business's payment details from day one, even if someone else is doing the day-to-day work.
Is paying someone worth it, or should you run it yourself?
Run it yourself if your spend is under roughly $1,000 to $1,500 a month, your category is light on competition, and you have two or three hours a week to give it. Below that spend, most of a management fee goes on work a careful owner can do in Google's own interface, with the auto-apply recommendations turned off, since in our experience they're tuned to grow Google's revenue, not necessarily yours.
Pay someone once any of three things are true: the category is competitive enough that a mistake in the keyword list costs real money inside a day, the account needs conversion tracking set up properly and that sits outside your own skill, or your own time is worth more than the hours the account would take.
What a well-run account can return
$13,149 into Google Ads returned $35,222 of closed deals, a 2.7x return, in closed work. This is what puts the fee question in perspective. Video Taxi, an Auckland video production business, ran that account from 3 June 2025 to 7 May 2026: three closed deals carried a Google Ads source in their CRM, from 50 form enquiries. A management fee of a few hundred dollars a month is not the number that decides whether Google Ads works for you. What the account actually returns is. Use the ad spend calculator to work out what your own numbers would need to look like.
If you are already paying someone and you are not sure the fee is earning its keep, a free ads audit will tell you in under an hour, no account access required beyond read-only.