Metric Definition
Total transaction throughput
Track from
Gross payment volume
Gross payment volume (GPV) is the total monetary value of all transactions processed before deducting fees, refunds, and chargebacks. It represents the overall scale of payment activity and is the top-line figure from which net revenue is derived after all deductions.
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What is gross payment volume?
Gross payment volume is the total value of payments processed through your payment system before any deductions. It includes all successful charges regardless of whether they are later refunded, disputed, or subject to processing fees. GPV is the starting point for understanding revenue and the foundation of a payments waterfall analysis.
GPV is the top-line indicator of payment processing scale and directly influences transaction fee costs, volume-based pricing tiers, and negotiating leverage with payment providers. Higher GPV often unlocks lower per-transaction fees, making it a factor in payment cost optimisation.
Tracking GPV alongside net revenue quantifies the true cost of payment processing. A growing gap between gross and net indicates rising fees, increasing refunds, or escalating disputes that erode the value captured from each pound processed.
How to calculate gross payment volume
GPV = Sum of All Successful Transaction Amounts
For example, if a business processes 5,000 transactions totalling 750,000 pounds in a month, its GPV is 750,000 pounds. Include all successful payment types: card payments, bank transfers, digital wallets, and local payment methods.
Do not subtract refunds, chargebacks, or fees from GPV. Those deductions belong in the net revenue calculation. GPV should represent the gross throughput of your payment system.
How to grow gross payment volume
- 1
Improve charge success rate
Every declined payment is volume that could have been captured. Optimising charge success rate through retry logic, network tokens, and card updaters directly increases GPV.
- 2
Expand payment method coverage
Accept the payment methods your customers prefer. Adding local payment methods in new markets and digital wallets at checkout removes friction that prevents transactions from completing.
- 3
Increase average transaction value
Higher average revenue per transaction means more volume from the same number of customers. Bundling, upselling, and tiered pricing all contribute.
- 4
Reduce cart and checkout abandonment
Streamline the checkout experience to convert more purchase intent into completed payments. Faster load times, fewer form fields, and saved payment methods all reduce abandonment.
Related metrics
Net Revenue
Revenue retained after deductions
Financial MetricsMetric Definition
Net Revenue = Gross Payment Volume - Fees - Refunds - Chargebacks
Net revenue is the total payment volume minus processing fees, refunds, chargebacks, and other deductions. It represents the actual revenue retained from payment processing activity and is the figure that flows into your profit and loss statement.
Average Revenue Per Transaction
Mean payment value per successful charge
Financial MetricsMetric Definition
Average Revenue Per Transaction = Total Revenue / Number of Successful Transactions
Average revenue per transaction measures the mean monetary value of each successful payment processed through your payment system. It reflects pricing effectiveness, purchase behaviour, and product mix across your customer base. Tracking this metric over time reveals whether customers are spending more or less per purchase and helps quantify the impact of pricing changes, bundling strategies, and upsell initiatives.
Charge Success Rate
Payment authorisation effectiveness
Financial MetricsMetric Definition
Charge Success Rate = (Successful Charges / Total Charge Attempts) x 100
Charge success rate is the percentage of payment attempts that are successfully authorised and captured. It encompasses card network approvals, 3D Secure completions, and gateway processing outcomes. Every percentage point improvement in charge success rate translates directly to recovered revenue that would otherwise be lost to declined payments.
Trace every pound from gross volume to net revenue
Build a metric tree that decomposes GPV through fees, refunds, and chargebacks to net revenue so you can see exactly where value is captured and where it leaks.