Smart Routing
What Is Smart Routing?
Smart routing—also called intelligent payment routing or dynamic transaction routing—is the algorithmic process of selecting the most advantageous payment provider for each individual transaction in real time, based on configurable rules and live data signals. Unlike static routing, which directs all transactions to a single predetermined provider, smart routing evaluates card type, issuing country, currency, amount, merchant category code, fraud risk score, and provider availability—then dynamically assigns each transaction to the provider best positioned to approve it at the lowest cost.
Why Smart Routing Matters
The Multi-Acquirer Optimisation Problem
In a multi-acquirer environment, no single provider is optimal for every transaction type. Acquirer A may offer the best approval rates for domestic German debit cards but underperform on cross-border Amex corporate cards. Without a routing layer that continuously evaluates performance dimensions per transaction, merchants either leave authorisation rate improvements on the table or overpay by routing everything to a single provider at a suboptimal blended rate.
Interchange Optimisation Through Geographic Routing
Within the EEA, routing transactions to a locally resident acquirer qualifies consumer card transactions for IFR-capped interchange rates (0.2% debit, 0.3% credit). Routing the same transactions through a non-EEA acquirer loses the IFR benefit. Smart routing applies this logic automatically: identifying the card's issuing geography via BIN lookup, then selecting the acquirer that minimises the interchange category for that card-geography combination.
Authorisation Rate Uplift
Issuing banks apply differentiated approval logic based on the acquiring bank receiving the authorisation request. A transaction from a local, familiar acquirer typically receives a higher baseline approval rate. Smart routing captures this issuer-acquirer affinity by directing each card's authorisation to the acquirer with the strongest historical performance for that issuer—continuously calibrated by live authorisation rate data.
Smart Routing Decision Logic
A production smart routing engine evaluates multiple rule tiers in priority order for each transaction. Availability rules first: is the preferred provider online and within capacity? Compliance rules second: does this transaction require specific processing characteristics mandated by regulation? Commercial rules third: which available provider produces the lowest combined interchange and processing cost? Performance rules fourth: which provider has the highest historical authorisation rate for this BIN range? The winning provider is selected in under 10 milliseconds.
How Hellgate Hub Delivers Smart Routing
Hub is Hellgate's smart routing engine within the Composable Payment Architecture (cpa). It evaluates over 50 transaction variables per authorisation decision, applying BIN-based, currency-based, and performance-based routing rules configured through Hub's visual interface or API. Link maintains concurrent connections to all configured acquirers and handles per-provider request formatting transparently—so the routing decision and dispatch happen without the merchant's application being aware of the provider switch.
Pulse continuously measures authorisation rates, decline code distributions, and cost metrics per provider and per routing rule—feeding performance data back into Hub's routing optimisation. Merchants using Hub's smart routing typically see authorisation rate improvements of 2–5 percentage points on previously under-optimised segments, and interchange cost reductions of 0.5–1.5% on European card volume, within the first 90 days of deployment.