Insights

Most merchant accounts don’t get shut down because of fraud. They get shut down because of chargebacks.

What makes this challenging is how quickly things escalate. A business can appear stable one month and find itself under monitoring the next with limited time to correct course. By the time most ISOs or merchants react, the account is already at risk.

At KORT, this is one of the most common patterns we see. The issue isn’t always the business itself, but how quickly chargeback ratios move beyond acceptable thresholds without being actively managed.

How Chargeback Thresholds Actually Work

Card networks track dispute activity through defined thresholds. Once a merchant crosses them, they are placed into monitoring programs that trigger additional scrutiny and penalties.

While exact thresholds vary, the general framework is consistent:

• Closer to 1%: Early warning stage, increased monitoring begins
• Around 1% to 2%: Merchant may enter a formal monitoring program
• Above ~3%: High risk of termination and potential MATCH listing

These approximate thresholds are set and enforced at the network level and sponsor banks are expected to act when merchants approach or exceed them.

The key point is not where the line is. It is how quickly a merchant can move from below it to well above it.

Why Chargebacks Escalate Faster Than Expected

Chargebacks rarely increase gradually. They tend to spike.

A few common drivers:

• Fulfillment gaps. Delays between purchase and delivery create uncertainty and disputes
• Customer confusion. Unclear billing descriptors or refund policies lead to avoidable chargebacks
• Misaligned marketing. Aggressive or misaligned marketing can bring in customers who were never a good fit

Once dispute volume increases, it compounds. More disputes lead to closer scrutiny, which often results in higher decline rates or operational friction, which can further impact customer experience.

Without active intervention, the situation tends to accelerate.

What Monitoring Programs Mean in Practice

Once a merchant enters a monitoring program, expectations shift:

• Monthly reporting requirements increase
• Fines and fees may be applied
• The sponsor bank is under pressure to demonstrate corrective action

At that stage, the question is no longer whether the merchant is a good business. It becomes whether the trend can be reversed quickly enough to satisfy network expectations.

If not, termination becomes the likely outcome.

How to Keep Chargebacks Under Control

The most effective approach is to manage chargebacks before they become visible at the network level.

What does this mean, practically?

• Tightening refund handling: Resolve issues early before they turn into disputes
• Monitoring transaction patterns closely. Identify spikes in real time, not after the fact
• Aligning marketing and fulfillment. Set accurate expectations and deliver on them consistently
• Improving post-purchase communication. Reduce confusion that leads to unnecessary disputes

These are operational levers. They require ongoing attention, not one-time fixes.

Why This Matters for ISOs

For ISOs, chargebacks don’t just impact the merchant. They can influence how your portfolio is viewed by sponsor banks and networks. Elevated dispute ratios can strain sponsor bank relationships and limit future placement options.

In some cases, a single poorly performing merchant can create broader friction. That’s why experienced partners focus on early detection and active management, not just onboarding.

At KORT, a significant part of the work happens before and after boarding. Identifying potential pressure points early, aligning expectations with merchants while staying close to performance over time is what helps avoid situations where chargebacks become unmanageable.

For ISOs and merchants operating in ecommerce in a variety of models, understanding how quickly things can shift is critical. Managing chargebacks is not just about compliance. It is about keeping the account active and stable.