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about
about
Chargeback Nerd is a boutique chargeback consulting and payments risk advisory focused on dispute prevention, chargeback management, and card network compliance. We work with merchants, platforms, and payments teams to help them reduce unnecessary chargebacks, improve dispute outcomes, and understand how issuer behavior and network rules actually impact results.
With deep experience across Visa and Mastercard dispute rules, issuer decisioning, and merchant operations, Chargeback Nerd delivers practical, pattern-driven guidance rather than generic playbooks. The focus is on identifying real loss drivers, improving evidence quality, and designing systems that prevent disputes upstream without damaging customer trust or limiting growth.
biography
biography
I'm Amber McGirr, founder of Chargeback Nerd.
I advise technology companies, payment providers, and merchants on complex payment dispute challenges. My work combines dispute operations, product strategy, and card network expertise to help organizations make better decisions about evidence, representment, automation, and network compliance.
Chargeback Nerd was built on a simple belief: the payments industry needs clearer thinking. Too often, network rules, issuer behavior, and dispute processes are treated as assumed knowledge instead of being explained in a practical, actionable way.
I help bridge that gap by turning complex dispute problems into clear strategies, whether that's reviewing a product, interpreting new network rules, improving evidence, or helping teams understand how disputes really work.
I believe better decisions start with better understanding.
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