An invoice can only be approved efficiently once it reaches the right person. In many accounts payable(AP) teams, that step still happens manually: an invoice gets forwarded by email, sent to the wrong inbox, physically passed between departments, or left waiting because nobody's quite sure who's supposed to handle it. The approver hasn't rejected it or ignored it, it simply hasn't reached them yet.
That's the specific problem this article addresses: not the approval decision itself, but the routing that gets an invoice to the right decision-maker.
Invoice routing software automatically directs invoices to the appropriate person, team, or approval queue based on predefined workflow rules, rather than relying on someone to manually decide where an invoice should go next.
Depending on the platform and how an organization configures it, routing rules may take into account criteria such as:
Not every system supports every one of these criteria, and the options available vary by platform.
Routing is distinct from a few related concepts it's often grouped with:
Invoice matching is checking an invoice against a purchase order and goods received note
Invoice approval is the decision to approve or reject an invoice.
Invoice routing is determining who should review the invoice and how it moves through the workflow to get there.
Routing is the mechanism that gets an invoice to the right place. Approval is the decision that happens once it arrives
A typical automated routing sequence looks something like this:
The invoice is received, whether via email, upload, or another intake channel.
Invoice data is captured and extracted. Key fields such as vendor, amount, invoice number, and line items can be extracted automatically using OCR or AI-powered extraction.
The invoice is reviewed and coded. The invoice is checked for completeness and assigned to the appropriate GL code, cost center, or budget line.
The invoice is matched against the corresponding purchase order and/or receipt, where applicable, to confirm that what was ordered, received, and billed are in agreement.
Routing rules are applied, based on how the organization has configured them, commonly by criteria such as department, cost center, or spend threshold.
The invoice is directed to the appropriate approver.
The approver receives and acts on the invoice, with visibility into relevant budget information and built-in policy guidance. Where the workflow supports escalation or reassignment, an approval can be redirected or escalated according to the configured rules.
The approved invoice continues to the next stage of the process, such as posting to the ERP or scheduling payment.
The specifics vary by platform and by how an organization configures its workflow. The underlying value is the same: invoices move through the appropriate review and approval path without someone manually deciding, invoice by invoice, where they should go next.
Invoices sent to the wrong inbox, requiring someone to notice and redirect them
Forwarding chains, where an invoice passes through several people before reaching the right one
Invoices waiting for someone to decide who should approve them, particularly when responsibility isn't clearly defined
No automatic escalation when an approver is unavailable, stalling the invoice until someone intervenes
Unclear ownership, making it hard to know who's actually responsible for moving a given invoice forward
Limited visibility into where an invoice currently sits, since there's no single system tracking its path
AP staff spending time chasing approvals rather than processing invoices
These are routing-specific problems. Broader AP risks like duplicate payments can stem from a range of causes across the AP process, not routing alone, so it's worth keeping that distinction in mind rather than treating poor routing as the sole cause.
What routing delays do directly cause is time loss: a misdirected invoice sits for days before anyone notices, forwarding adds more, and by the time it reaches the right approver, a payment due date may have already passed. That lost time shows up as late-payment fees, missed early-payment discounts, and strained vendor relationships.
An effective routing process should generally achieve the following:
The invoice reaches the correct approver or queue without manual intervention
Routing rules are applied consistently across invoices
Approval ownership is clear at every stage
Stalled invoices can be identified before they sit unactioned for long periods
Escalation can occur where it's supported and configured
Finance teams can see workflow status without having to ask around
The routing history contributes to a complete digital audit trail
The process doesn't depend on someone manually forwarding every invoice individually
The goal is controlled, visible movement through the workflow, ensuring each invoice reaches the appropriate individual to action their respective part of the accounts payable process.
Routing and matching are related but different parts of the AP process. Matching checks whether the information on an invoice agrees with the relevant purchase order or other supporting records. Routing determines who needs to review or approve the invoice and where it goes next.
In practice, a typical workflow might look like this: invoice intake → data extraction → coding → matching → routing → approval → payment/posting to ERP for payment. The exact sequence, and how tightly routing and matching are connected, can vary depending on the organization and how its workflow is configured.
Monson Fruit Company provides a practical example of the impact of requiring invoices to be matched before an approval route is initiated. By ensuring invoices were reconciled against POs and receipts before routing began, invoice processing time fell from roughly a month and a half to three to four minutes per invoice, while its five-month invoice backlog was eliminated. Read the full Monson Fruit case study.
When evaluating invoice routing software, it's worth checking whether a platform can actually deliver on the following, rather than assuming every solution handles routing the same way:
Configurable routing rules, so routing logic can be adapted to how your organization actually works
Clear approval ownership, with no ambiguity about who's responsible for a given invoice
Department or cost-center routing where needed
Vendor-based routing where supported
Spend limit-based routing where supported
Approval thresholds, applying different routing paths depending on invoice value
Escalation options, for when an approver is unavailable
Visibility into pending invoices, so nothing sits unnoticed
Mobile invoice approvals - to keep processes moving from any location
Audit history, documenting how each invoice moved through the process
ERP or accounting system integration, connecting routing data to the organization's existing finance systems
Payment capabilities within the software platform
The ability to handle different invoice scenarios, including invoices with and without a corresponding purchase order, and credit notes
When evaluating a platform, check whether it can actually support the specific criteria your organization needs, rather than assuming every routing capability is included by default.
What does invoice routing software do?
Invoice routing software automatically directs invoices to the appropriate person, team, or approval queue based on predefined rules, so invoices reach the right reviewer without manual forwarding or someone knowing the organization’s approval hierarchy.
How is invoice routing software different from invoice approval software?
Invoice approval software supports the decision to approve or reject an invoice. Invoice routing software is specifically about getting the invoice to the right person or queue before that decision happens. The two are closely related but address different parts of the AP process.
Can invoice routing rules be customized by department or vendor?
Many invoice routing systems support customization by criteria such as department or vendor, though the specific options available vary by platform. It's worth confirming what a given solution supports before assuming a particular configuration is available.
Can invoice routing software integrate with an ERP or accounting system?
Integration capability varies by platform and implementation. Where supported, it can allow l data to connect with an organization's existing finance systems.
Can invoice routing handle invoices without a purchase order?
Yes. Invoice routing isn't dependent on a PO being present. Non-PO invoices can still be routed based on rules like vendor, department, cost center, or spend threshold, so they reach the right approver without needing to go through PO matching first. This is common for scenarios like recurring service invoices, utilities, or one-off purchases that were never raised as a formal PO.
Invoice routing is a component of the broader automated invoice approvals workflow within Fraxion, rather than a separate, standalone product. In practice, this means an invoice moves through a defined approval route toward the appropriate reviewer as part of the same workflow that handles the approval decision itself, rather than routing and approval being separate systems a team has to manage independently.
That routing step connects directly into Fraxion's broader accounts payable automation capabilities (intake, AI extraction, coding, automated matching, risk assessment and recommendations, approval, and payment / ERP integration). Once an invoice reaches the right approver and is approved, it continues through the same workflow toward payment, with each stage forming part of the audit trail Fraxion maintains from requisition through payment. This all sits within Fraxion's broader procure-to-pay platform, so invoice routing isn't handled in isolation from the rest of an organization's purchasing and AP processes.
Invoice routing is the mechanism that determines whether an invoice reaches the appropriate individual promptly or becomes another item awaiting attention in an inbox. Automating this routing eliminates the manual forwarding and follow-up that slow AP teams down, establishes clear ownership over each invoice, and makes the approval workflow easier to monitor from end to end.
To see how this plays out for an organization with a more complex, multi-level approval process, see how Hotchkiss built a five-level approval matrix.