Taking control of advertising spend leakage in media and advertising agencies

The challenge of managing card spend in modern agencies

Media and advertising agencies operate in fast-paced, campaign-driven environments. But without structured controls, agency debit card spend can quickly turn into advertising spend leakage. Creative, finance and account teams manage multiple parallel workflows, while vendors, from ad platforms to niche software providers, require frequent card payments to keep campaigns live.

Debit cards now sit at the centre of agency operations. From stock imagery and digital advertising to travel and SaaS subscriptions, card-based transactions account for a growing share of expenditure. Yet control frameworks have not always kept pace.

Without clear oversight, media agency debit card spend becomes a direct driver of advertising spend leakage. Unmonitored subscriptions, duplicate charges and unclear cost allocation reduce margin visibility and make it harder to assess profitability at client or campaign level.

Individually assigned cards provide clearer accountability, with responsibility tied to a single user. Shared cards, however, introduce structural risk. When multiple teams use the same card across campaigns, ownership blurs and oversight weakens. All transactions consolidate into a single account, limiting real-time campaign tracking. Finance teams often gain full visibility only after funds are spent, followed by a time-consuming month-end reconciliation.

Manual controls, such as finance pre-approval processes, rarely scale in fast-moving campaign environments.

As media agency debit card spend becomes increasingly digital, recurring and cross border, legacy card structures struggle to provide the visibility and control needed to reduce advertising spend leakage.

A structured approach starts with clear ownership and account segmentation. Each team member or budget owner is issued an individual business debit card, ensuring accountability sits with a single user. Cards are linked to specific clients, campaigns, or cost centres. Spending limits can be set at card or account level, with time-bound controls such as automatically blocking cards once a campaign ends. Real-time transaction notifications provide finance teams with continuous visibility. Real-time notifications keep finance teams informed of all activity. This setup strengthens budget visibility, prevents overspend or dormant subscriptions, and helps reduce advertising spend leakage.

Fire’s business debit cards are designed to support this model through individual card issuance, account segmentation, and real-time controls. Integrated with the Fire API, agencies can:

• Automate the creation of client or campaign-specific accounts
• Instantly issue, block, or manage cards
• Monitor balances in real time
• Move funds seamlessly between operational and campaign accounts

This approach provides the visibility, control, and operational agility agencies need to manage advertising spend leakage while running campaigns efficiently.

Segregation of Duties (SoD) enables agencies to control spend by giving team members only the permissions they need for their role.

Financial Controllers: Admin or Full User access allows them to open new campaign accounts, move funds between cost centres, and set global spending rules.

Media Buyers and Account Leads: Card-only users can spend from campaign-linked cards but cannot access other accounts or initiate external transfers.

This structure empowers finance teams to allocate funds precisely, enforce spending limits, and reduce reliance on manual policies. It prevents duplicate tools, off-scope expenses, and minimises advertising spend leakage, all without slowing teams down. Solutions like Fire’s multi-user controls make it simple for agencies to assign roles, enforce permissions, and maintain full visibility over spend.

Fire’s Mastercard business debit cards, combined with flexible user roles, give media and advertising agencies full control over card spend and help reduce advertising spend leakage across campaigns.

A Fire’s Business Account lets agencies create separate accounts for each client or campaign instantly. Admins or Full Users can assign Card-only users and issue individual cards. Each card is tied to a specific campaign account, restricting spending to allocated funds. Campaign accounts can be funded upfront or on a recurring basis, daily, weekly, monthly, or per transaction, giving finance teams real-time visibility and control.

Through the Fire mobile app or API, finance teams receive instant notifications for all card activity. Transactions include clear metadata that can be exported or integrated into accounting systems, making it easy to track media agency debit card spend across clients and campaigns.

With these controls in place, debit cards become a structured, efficient tool that protects margins, prevents overspend, and improves operational efficiency across the agency.

Addressing advertising spend leakage doesn’t have to be daunting. Start with a brief audit: identify where card spend occurs, how many cards are in circulation, and who controls them.

Next, pilot the controls discussed in this article with one or two clients, teams, or departments. This allows agencies to test new processes, improve visibility and accountability, and measure impact, without disrupting ongoing operations.

As teams experience fewer blocked payments and reduced month-end surprises, the approach can be expanded to additional clients, teams, or departments.

With Fire’s real-time account opening and user onboarding, agencies can gradually roll out controlled debit cards, shifting spend from shared cards to individual business debit cards at a pace that fits the agency. This ensures a smooth transition while maintaining uninterrupted campaign operations.

The shift to a controlled card environment should be measured by metrics that directly impact the bottom line. Success goes beyond organisation; it shows in reduced non-billable spend and the elimination of dormant SaaS renewals. Tracking hours saved on manual reconciliation and a decrease in unassigned expenses allows finance teams to move from reactive accounting to a proactive strategy. Giving a clear view of profitability per client and revealing which accounts are thriving versus those affected by advertising spend leakage.

This transformation also changes internal behaviour. With every transaction fully visible and attributable, accountability becomes inherent. Teams monitor budgets not through restrictive policies, but because the system itself highlights inefficiencies. This approach helps agencies protect margins while maintaining creative momentum.

In modern media and advertising agencies, card spend is an operational necessity. While the expenditure itself is unavoidable, the lack of oversight is not. By introducing business debit card controls, agencies can transform card spend from an unstructured cost into a transparent, accountable process. Every transaction is linked to campaigns and clients, protecting margins and enabling strategic decision-making rather than quietly contributing to advertising spend leakage.

Fire’s Business Debit Cards provide the infrastructure to make this transition seamless. By adopting tightly managed, client-attributable spending, agencies can reduce waste, gain real-time visibility, and focus on delivering high-impact campaigns.

Interested in seeing how your agency can regain control of card spend and reduce advertising spend leakage? Get in touch with our team at sales@fire.com to learn more.

Advertising spend leakage refers to small, unmanaged costs that occur across agency operations. Examples include dormant or unused subscriptions, unallocated card transactions, off-scope expenses, and purchases that cannot be billed to clients. While individually minor, these costs accumulate over time and can reduce overall profitability.

Business debit card controls streamline media agency debit card spend by reducing manual approvals. Teams can spend from campaign-allocated funds without waiting for finance, keeping operations efficient and preventing advertising spend leakage.

Shared company cards reduce accountability, making it difficult to track who spent what and encouraging a “just put it on the card” approach. This is particularly risky for digital, recurring, and international expenses, which are common in media and advertising.

Introducing Fire’s Business Debit Cards can be straightforward. Agencies can start gradually, for example by moving recurring spend to a single card or piloting one or two campaigns or clients. As workflows embed and benefits become clear, the system can be expanded to additional spend categories and departments without disrupting ongoing campaigns.