Every card payment follows a route. When a customer clicks pay, the transaction travels from your checkout to a payment processor, which communicates with the customer's bank to approve or decline it.
For some merchants, that route is fixed. Every transaction goes to the same processor, regardless of where the customer is, what card they're using, or how much they're spending.
This is static payment routing: the path is fixed and doesn’t change regardless of the transaction.
With dynamic transaction routing, instead of payment following the same fixed path, each transaction is evaluated against a set of conditions that you’ve set up and sent to your specified processor.
The result is the ability to design your payment routing to meet your goals: whether that’s for higher approval rates, lower processing fees, or reduced fraud risk.
This guide will explain what dynamic transaction routing is, how it works, and how to set it up with and without a payment orchestration platform.
Primer is a Unified Payment Infrastructure that lets you set up dynamic payment routing without any coding. Learn more about how Primer works.
What makes transaction routing ‘dynamic’?
Dynamic transaction routing helps you to route payments to the processor that matches the conditions you've set.
The rules are set once and applied to every transaction in real time. When you want to change them, you update the rules and they take effect immediately.
“Dynamic” means the routing logic you define is applied automatically to each transaction in real time. It should not be confused with AI-led decision-making: you set the rules and remain firmly in control.
You may also see this called smart routing or intelligent payment routing. These terms are largely used interchangeably across the industry.
How dynamic payment routing improves your payment performance
Dynamic routing doesn't change anything about the checkout experience your customer sees. It does change what happens behind the scenes after the customer clicks pay, and the impact on payment performance can be significant.
You can set up routing that offers you:
- Higher approval rates by matching each payment to the right processor. No processor performs equally well everywhere. With dynamic routing, you can send each payment to the processor with the strongest track record for that combination of card type, region, and issuer.
- Lower processing costs by routing to the most cost-effective processor. Different processors charge different fees for different transaction types. Dynamic routing lets you direct each transaction to the processor that offers the lowest fee for that card type, currency, and region. It also gives you real negotiating leverage, because processors know you can shift volume to an alternative.
- More resilience when recoverable failures occur. Not every failed payment is final. Sometimes a processor returns a soft decline, which means the payment has failed for a potentially recoverable reason, such as a temporary issue with the processor, issuer, or transaction flow.
Instead, you can set up a fallback: a rule that dynamically retries the payment through another processor (based on logic you’ve defined) when the failure is recoverable. If the retry succeeds, the customer can complete the purchase without noticing anything happening behind the scenes.
This is valuable for merchants of all sizes. As well as losing revenue in the moment, failed payments can create frustration and uncertainty at the exact point the customer is trying to buy. This can result in damaged trust and customers who are less likely to return.
- Better fraud management without adding friction for every customer. Dynamic routing lets you treat payments differently based on their risk profile. High-risk or high-value transactions can be routed through additional checks, such as 3DS or a processor setup with stronger fraud controls, while low-risk payments can follow a simpler path.
This helps you apply friction where it is justified, rather than adding the same checks to every customer. The result is a more balanced payment flow: stronger protection for riskier transactions, and a smoother checkout for trusted customers.
How to set up dynamic transaction routing in-house
If you decide to build dynamic routing in-house rather than using a payment orchestration platform, the scope of work can be overwhelming. Each step below requires significant engineering time, and the ongoing maintenance only compounds as you add more and more processors.
Here are the rough steps you’d need to take:
Step 1. Connect to multiple processors
Each processor has its own API structure, authentication method, and error handling. A typical integration could take months per processor, with ongoing maintenance required every time the processor updates its API.
Step 2. Build the routing logic
Custom code that evaluates each transaction and sends it to the right processor based on your rules. This logic lives in your codebase, maintained by your engineering team, and updated every time you add a processor, change a rule, or a processor changes its decline code behavior.
Step 3. Handle decline codes across processors
Each processor uses different codes to explain why a payment was declined. Knowing when to retry (a temporary issue like insufficient funds) and when not to retry (a stolen card flag, where retrying can result in a fine from the card network) requires payments expertise most engineering teams don't have.
Step 4. Build reporting across processors
Each processor reports in a different format. To compare performance across processors and refine your routing rules, you need to reconcile these reports manually or build a unified reporting layer yourself.
Most merchants who go down this path find that the ongoing maintenance cost, not just the initial build, is what makes it unsustainable.
Every API change, every new processor, and every new decline code requires engineering time. This is why many merchants end up with static routing even when they know dynamic would perform better: the infrastructure to support it is too expensive to maintain in-house.
Primer customer Ferryhopper faced this exact challenge as its payment operations became more complex. The deeper its team went into building and managing its payment infrastructure, the more time and attention payments began to demand from the wider business.
As Panagiotis Sarafis, CPO and Co-founder at Ferryhopper, explains:
“The deeper we went in payments, the more we found ourselves turning into a payments company rather than focusing on creating the world’s best destination to book ferry travel.”
Read more: Charting a new course for payments at Ferryhopper
How to set up dynamic transaction routing with Primer
Primer is a Unified Payment Infrastructure that connects you to a range of local and global payment processors through a single integration. Instead of building and maintaining each processor connection and routing logic independently, you manage everything from one platform, without engineering involvement for each change.
Activate your processors with just a few clicks
Simply head to the connections library in the Primer dashboard and select the processors you want to connect. Once the commercial agreement with each processor is in place, activation takes just a few clicks.
This means there’s no need for custom API integrations, and as a result, no ongoing maintenance. Primer builds and maintains every connection for you.
Build your routing rules in Workflows without code
Workflows is a no-code routing builder. You set conditions using an if/then structure based on any data point in the transaction.
Rules update instantly and can be changed by your payment team without engineering involvement, using a drag and drop interface. You can easily set up A/B tests, to continuously optimize your payment set up.
Set up Fallbacks to recover failed payments automatically
With more than one processor connected, you can enable Fallbacks in your Workflow. When a payment is declined by the primary processor, Primer automatically retries with a secondary processor.
Our Unified Mapping Standard normalizes decline codes across processors, so the platform knows when retrying is worth trying.
Primer’s 3DS is processor-agnostic, so the customer’s verification can carry across a retry. If a payment is retried with a different processor after the customer has completed 3DS, the verification result transfers and the customer is not asked to verify again. This avoids a second authentication step, which can cause customers to abandon the payment.
Monitor and refine your routing strategy using Observability
Primer Observability brings data from every connected processor into one filterable view, so you can see how payments are performing across approval rates, decline reasons, fees, card types, regions, and payment methods.
From there, Monitors help you spot issues as they happen, alerting your team when a metric drops for a specific processor, card type, or route. This turns dynamic routing into an ongoing optimization loop: set your initial rules, track how they perform, and refine them based on real payment data.
Primer’s AI Companion adds another layer by analyzing that data and surfacing insights that might be difficult to spot manually. It can flag, for example, when a processor is underperforming for a specific card type, or where changing a routing rule could improve approval rates.
Compare processing costs with Costs Overview
Costs Overview sits within Primer's reconciliation tools and shows processing costs across every connected processor. You can compare what each processor charges for the same transaction types and identify exactly where routing changes would save money.
How Cleeng uses dynamic routing with Primer to optimize subscription payments globally
Cleeng is a subscriber retention management platform and Merchant of Record for D2C subscription businesses, trusted by brands including the NHL, Optus Sport, NHK, Big Ten Network, The Weather Channel, and The Tennis Channel.
As its customers expanded across the U.S., Latin America, and Asia-Pacific, Cleeng needed a more flexible payment setup: one that could adapt to different providers, markets, and subscription payment challenges without adding operational complexity.
Partnering with Primer gave Cleeng that flexibility. Instead of building and maintaining separate integrations for every provider, Cleeng can connect to multiple PSPs through one unified payment infrastructure. It can also test provider performance, compare success rates, and dynamically route payments based on what works best across different markets.
That same infrastructure helps Cleeng protect recurring revenue. When a subscription payment fails, advanced fallback logic can automatically cascade the payment to another processor, increasing the chance of recovery and reducing the risk of involuntary churn.
“Given the diverse needs of our customer base, we needed a resilient, adaptable solution that could address a wide range of challenges across different markets,” said Enzo Bermond, Senior Product Manager at Cleeng.
Start routing every payment to the right processor with Primer
Dynamic transaction routing is a direct way to improve approval rates, reduce processing costs, and build resilience into your payment flow.
And while the barrier of entry used to be high, with multiple processor integrations to build and maintain, routing logic to write and update, decline codes to interpret, and reporting to reconcile, that’s no longer the case with the right tools.
Primer removes that barrier. You activate a range of local and global payment service providers (PSPs) in a few clicks, build routing rules without code, recover failed payments automatically with fallbacks and agnostic 3DS, and see performance across every processor in one dashboard.
That way, you can start routing every payment to the right processor every time.
Book a demo to see how Primer makes dynamic transaction routing work for your payment stack.
Frequently Asked Questions (FAQ): Dynamic transaction routing
What is dynamic transaction routing?
Dynamic transaction routing is the process of automatically sending each payment to the processor best suited to that transaction. Routing decisions can be based on factors like card type, issuing country, currency, transaction value, processor performance, or decline reason.
How is dynamic transaction routing different from static payment routing?
With static payment routing, every transaction follows the same route, usually through one primary payment processor. With dynamic transaction routing, each payment is evaluated in real time and routed according to the rules you set.
How can dynamic routing improve payment processing?
Dynamic routing can improve payment processing by helping merchants send transactions to the processor most likely to approve them, charge the lowest fee, or handle the transaction most effectively. This can support higher authorization rates, lower processing costs, and better resilience if a processor is unavailable.
Can dynamic transaction routing reduce decline rates?
Yes. Dynamic transaction routing can help reduce decline rates by sending payments to processors with stronger performance for specific card types, regions, issuers, or transaction types. If a payment fails, fallback rules can also retry the transaction through another processor where appropriate.
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