When to increase, hold or reduce next month’s advertising budget

Last month’s ROAS cannot set next month’s budget on its own

For a clinic or beauty business already advertising, the immediate question is how much more to spend next month. Rising inquiries and a healthy return on ad spend make an increase look natural. Yet the answer depends on when those paying customers were acquired and whether the business can accommodate more of the same service.

growly’s recommendation rests on three conditions: the cost of acquiring a customer who completed a visit is affordable; recent inquiries have had enough time to progress; and the business has capacity for additional demand. When all three hold, consider an increase. When outcomes are still pending, hold within a defined limit. When customer fit or delivery capacity is weak, reduce the relevant spending.

These decisions need not apply to the entire account. One service may be fully booked while another has availability. Separate decisions by service and market where the evidence supports it, without splitting a handful of inquiries into many tiny groups. A useful budget explains which campaigns will change and why, alongside the total.

For a first campaign, estimate inquiries and set an affordable test limit

Without a campaign history, an initial media range can be calculated as target qualified inquiries divided by the click-to-qualified-inquiry rate, multiplied by cost per click. Define a qualified inquiry as a received request with usable contact details, a relevant service need and enough information to respond. Substituting contact-button clicks understates the budget required. Treat the initial rate as an untested assumption and calculate low, base and high scenarios.

The illustration assumes 20 qualified inquiries and a KRW3,000 cost per click. At 4%, the calculation gives KRW1.5 million; at 2%, the same target requires KRW3 million. These are neither industry benchmarks nor recommended minimums. Keyword Planner forecasts for the intended market and relevant prior campaign records can inform the assumptions, but a forecast does not guarantee inquiries or revenue.¹

The calculated figure is not automatically an approved spend. Evaluate the expected share of inquiries reaching a completed visit or purchase and the affordable acquisition cost described below. If the downside is unacceptable, narrow the initial offer, market or search intent, or improve the offer and destination page. A limited test should answer a defined question rather than spread a small budget across so many countries that little can be learned. Record production, management costs and tax separately from media spend.

Document the total test limit, observation period, qualification criteria and review date. An average daily budget in Google Ads is not a fixed amount spent every day, so confirm the account’s actual spending limits. Requirements for a particular bidding strategy should not be presented as a universal campaign minimum. As inquiries and completed visits accumulate, replace the assumptions with observed results and move to the increase, hold or reduce decisions in the rest of this article.²

Set an affordable advertising cost per customer who visits

The full amount a customer pays is not available for advertising. Account for materials, external commissions, payment fees and other costs that rise with delivery. Revenue less those variable costs gives contribution before advertising. Decide how much must remain toward fixed costs and profit to establish an affordable acquisition cost.

A completed visit generating KRW1 million with KRW400,000 in variable costs leaves KRW600,000 before advertising. If acquisition costs KRW600,000, nothing remains at this stage. Campaign management and production add further costs. The contribution amount therefore should not automatically become the target acquisition cost; the target needs to preserve the required remainder.

This does not require rebuilding the entire income statement. Begin with the actual payment range, major variable costs and acceptable acquisition cost for the advertised service. If costs are uncertain, examine a range and test affordability at its conservative end. Unverified repeat purchases are a weak basis for funding a loss on the first visit.

The same KRW3 million produces different outcomes when completed-visit rates change

The calculation below holds spend and cost per click constant. What changes is the share of clicks that become completed visits. Acquisition cost equals spend divided by the number of customers who completed a visit. Contribution after advertising equals customer count multiplied by contribution per customer, less media spend. An inquiry-button click is not a customer who completed a visit in this calculation.

At a 0.6% completed-visit rate, KRW600,000 remains after media spend. That alone does not justify expansion. The remainder must cover separate operating costs and meet the business’s requirements. A 1.0% assumption needs supporting evidence before it is used in a budget; choosing it simply to reach a revenue target does not make it attainable.

The same table can explain current performance. A higher CPC may still accompany lower customer acquisition costs if more visitors complete a visit. Cheaper clicks can weaken the case for expansion when they produce inquiries that never attend. The budget review needs to follow the customer through to the service delivered.

Separate customers who have not yet travelled before increasing or cutting spend

Someone planning a trip to Korea follows a different timetable from someone already in the country. Cutting a recent overseas campaign because it has little visit revenue may interrupt demand that has not arrived yet. Counting every booking inquiry as future revenue creates the opposite problem: uncertain or cancelled visits become a reason to spend more.

Group inquiries by when they originated, separating completed visits, scheduled visits, undecided dates and cancellations. Assess completed groups through acquisition cost and contribution. For recent groups, examine service fit and booking progress. Where past records show the time to attendance, use that range to choose the next review date. Keep pending visits separate from lost prospects.

Short histories need neither an automatic increase nor an immediate stop. Set the spending range to maintain, a review date and a cumulative limit until that date. Waiting for evidence has a cost. Allowing for travel delays and controlling that cost belong in the same decision.

Review additional spending separately from the historical average

An affordable acquisition cost at the current budget does not establish that additional spend will repeat the result. Examine which searches and customers the increase reaches. Combining new spending with an established campaign’s accumulated results can conceal a recent deterioration.

Specify the service and market receiving the additional budget, the search or advertising scope being changed and the customer behavior to review. Narrow the question where possible. Record the change date alongside changes in price, promotions and booking capacity. Period comparisons can inform operating decisions without establishing that the budget change alone caused the difference.

Check appointment capacity before spending more. A fully booked service may gain inquiries without gaining completed visits. Consider whether demand can be directed to available dates or another suitable service. If the advertisement promises a premium experience, the ability to preserve the quality of customer support and service is part of the condition for expansion.

Attach a specific task to a hold or reduction

Holding spend does not mean leaving everything untouched. If inquiries fit the service but visits are pending, continue observation. If suitable customers repeatedly stall over price or travel dates, improve the advertisement and landing-page information. Define what will improve during the holding period and what change will inform the next decision.

Reduce spending where the problem is identified rather than cutting every campaign equally. Searches for unavailable services, demand for dates that cannot be accommodated and campaigns with sufficiently observed outcomes above the affordable acquisition cost each provide a different reason to act. If measurement connections have failed, restore them before expanding spending that cannot be evaluated.

A small inquiry count does not establish that a new market has no demand. Equally, missing evidence does not justify unlimited spending. Define both the question worth investigating and the cost allowed to investigate it. Reaching the limit should trigger a new choice about scope and approach, even when the question remains unresolved.

Connect the budget to delivery and review in one decision sheet

For each campaign, record current spending, the increase, hold or reduction decision, the revised cap and the supporting reason. Add acquisition cost for customers who completed a visit, the inquiries still awaiting an outcome and available booking capacity. This explains more about the operation than a total calculated backwards from a revenue target.

Finish with an owner and review date. The advertising owner updates spend and acquisition information; the service team updates bookings, visits and cancellations. Incorrect service information and broken inquiry routes should be fixed before the review date. At the next review, begin with the spending changed last time and the progress of the customers it reached.

growly’s view is that advertising management should provide this connection between decisions. Agree the information needed within the advertising engagement, use it to adjust audiences, messages and spend, and explain holds and reductions as clearly as increases. A business can choose its next budget when both the reasons to spend more and the reasons to spend less are visible.