For outsourced management of overseas search ads, should you choose a fixed service fee or a percentage of ad spend?

When choosing between a fixed service fee and a percentage of ad spend for outsourced overseas search advertising, the key is not which model is inherently cheaper, but whether the service fee matches the actual workload. When the budget is stable and the campaign scope is clearly defined, a fixed service fee makes costs easier to control. When the budget fluctuates significantly and scaling involves new markets and management tasks, percentage-based pricing can adapt more readily to the business—but it should include tiered rates or a cap.

Do not make the decision based solely on the size of the advertising budget. A small-budget account targeting multiple countries, involving several languages and complex inquiry tracking, may be more difficult to manage than a large-budget account focused on a single market. Quotes must be compared on the basis of the same service scope; otherwise, a low service fee may simply mean that necessary work has been split into extra-charge items.

What risks does each pricing model leave with the business?

A fixed service fee is a management fee paid monthly or at another agreed interval, and does not change with ad spend within the agreed scope. Its advantage is predictable costs: as the advertising budget increases, the management fee does not have to rise accordingly. But “fixed” does not mean unlimited workload. Adding countries, languages, product lines, or landing pages may trigger a revised quote. A service provider may also limit its deliverables to control its workload, so it is essential to specify exactly what the fee includes.

With percentage-based pricing, the management fee is calculated based on the agreed ad spend. This means the fee changes with campaign scale, but ad spend and management workload do not necessarily move in lockstep. Increasing the budget of existing campaigns may not require a proportional increase in staff time; entering a new market may require extensive research, setup, and testing even if spend is modest.

Percentage-based pricing can also create misaligned incentives: increasing ad spend raises the service provider’s revenue, but does not necessarily generate more qualified leads. This does not mean that the percentage model inevitably leads to waste. It does mean that businesses should retain approval authority over budgets and use lead quality to guide scaling. A fixed fee likewise does not automatically guarantee diligent optimization; clear deliverable requirements and regular reviews remain essential.

Calculate the cost break-even point, then check whether the services are equivalent

Assume two quotes cover exactly the same services: one charges a fixed fee of RMB 6,000 per month, and the other charges 12% of that month’s ad spend, with no minimum fee or other additional charges. This is a calculation example only and does not represent market pricing.

The break-even point is “fixed service fee ÷ percentage rate.” In this example, it is RMB 50,000. Below this point, the percentage-based fee is lower on paper; above it, the fixed fee is lower. However, if the percentage-based quote includes a minimum service fee, or the fixed-fee quote excludes conversion tracking or landing page edits, add those costs and recalculate.

Costs should also be calculated over the full engagement period, rather than compared for just one month. Account setup, keyword research, and tracking configuration during the launch phase are different tasks from search term cleanup and bid adjustments during the steady-state phase. Whether there is a separate one-time setup fee and whether fees are refunded upon early termination will also affect the actual cost.

Workload behind budget changes is the basis for choosing a model

If product lines, languages, and target markets are relatively stable, and budget adjustments are mainly made within existing campaigns, a fixed service fee can help prevent management fees from rising in step with ad spend. However, the contract should specify deliverables such as keyword and search term analysis, negative keyword maintenance, ad copy testing, budget adjustments, and report interpretation—not just a vague promise of “account optimization.”

If scaling means adding countries, languages, product categories, and advertising landing pages, the workload will genuinely increase. In this case, percentage-based pricing can provide a basis for the engagement, but the same rate should not increase without limit. You can agree on tiered rates and specify whether each spend tier is charged at its own rate, or whether a new rate applies to the entire amount once a threshold is reached; the results differ.

During a low-budget testing phase, the focus should not be solely on keeping fees low. Search advertising requires effective conversion tracking to determine which clicks generate valuable inquiries. If the quote covers only launching ads and excludes form tracking, spam lead identification, or sales feedback review, you may still be unable to answer “Is this market worth continuing to invest in?” after the test ends.

The fee terms in the contract matter more than the name of the pricing model

For percentage-based pricing, specify the fee basis: the amount deposited or actual spend; whether platform refunds or adjustments for invalid traffic are deducted; whether promotional credits are included; and how exchange rates and taxes are handled. Charging based on deposits and charging based on actual spend are not the same cost arrangement.

For a fixed fee, clarify the service scope and change fees, including which advertising platforms and accounts are managed, which markets and languages are covered, whether landing page edits are included, and how exceptional situations are handled. If website redesign, translation, or tracking development is charged separately, list these items before signing to avoid a low management fee masking necessary expenses.

Regardless of the pricing model, the business should retain access to and control over its advertising accounts and key data, be able to view raw platform spend, ad change logs, and conversion data, and agree on the handover process after the engagement ends. If you receive only summary reports and cannot independently verify the bills, your ability to assess whether the charges are reasonable will be weakened.

Evaluate fees by qualified leads, not by substituting inquiry volume for results

A lower quote does not necessarily mean a lower customer acquisition cost. For evaluation, include ad spend, service fees, and related tracking and landing page expenses in the same calculation, then assess the results based on valid inquiries and qualified leads. Form submissions that include spam, job inquiries, or mismatched requirements cannot be used directly as a basis for optimization.

Orders generated by overseas search advertising are also affected by sales follow-up, quoting, and the sales cycle, so short-term orders should not all be attributed to the outsourced advertising service. A more actionable approach is to agree on the definition of a valid inquiry, how sales feedback will be provided, and the conditions for scaling: approve a budget increase only when lead quality and cost meet the requirements confirmed by both parties.

When budget and workload do not move in step, you can use a base service fee plus charges for additional scope, or percentage-based pricing with a cap. Ultimately, choose an arrangement in which fee changes are explainable, service delivery is verifiable, and budget authority is controllable—not simply the fixed amount or percentage that appears lower.