AI finance workflows with clear approval controls
Finance teams lose time between receiving a document and deciding what should happen next. Someone checks the supplier, looks for the purchase order, asks for missing information and finds the person who can approve the transaction. Automating only the first extraction step leaves much of that coordination untouched.
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FI Digital helps UK organisations scope AI-assisted finance workflows around validation, exceptions and accountable decisions. Start with a bounded process such as expense review or invoice preparation, then decide which actions can be automated and which must remain with an authorised person.
Choose a process with a clear boundary
A useful first workflow has a known input, an owner, a decision rule and a defined output. For example: receive an invoice, extract candidate fields, check them against approved records and prepare an item for review. “Automate accounts payable” is too broad until the underlying processes and controls are mapped.
Choose a pilot with representative documents and known exceptions. Include the difficult cases that create work today: an unfamiliar supplier, a duplicate, a missing reference or a changed payment detail. The pilot should show how these cases are stopped and routed, not simply demonstrate a clean document moving through the system.
What a controlled invoice workflow can include
Intake and extraction
Capture documents from an agreed channel and extract candidate fields such as supplier, reference, date and amounts. Retain the source document so reviewers can compare the proposed data with the original. Treat extracted values as information to validate, not as automatically approved accounting entries.
Checks against approved records
Compare the candidate fields with supplier records, purchase orders or other authorised references where the relevant systems and interfaces support it. Make missing or conflicting information visible. Deterministic checks should handle rules that can be expressed precisely rather than asking a model to invent an interpretation.
Exception routing and approval
Send unresolved items to an appropriate queue with the source, detected issue and proposed next step. Distinguish a recommendation from an approval. Changes to supplier bank details, payment release and other high-impact actions need the controls your finance and security owners approve.
Posting and audit information
If the approved scope includes writing to an accounting system, define the allowed action, required approval, permissions and failure response. Record what was proposed, what changed, who approved it and the resulting system reference. Repeated processing should not create duplicate entries.
Our relevant experience
We have built expense-audit agents that support review workflows. That experience informs how we discuss checks, exceptions and human involvement. The exact invoice-processing scope, accounting connections and production controls for a new engagement must be confirmed during discovery.
Pilot outcomes need to be measured against your own baseline. A fixed accuracy or time-saving promise would conceal differences in documents, processes and review requirements. Agree a representative evaluation and acceptance criteria before deciding whether the workflow is ready to expand.
An illustrative pilot: prepare, check, review
Prepare, check and route for a decision
Illustrative finance pilot — not a measured client deployment
- 1Receive and extractRetain source; propose candidate fields
- 2ValidateCheck approved records and precise rules
- 3Route exceptionsExplain missing or conflicting information
- 4Authorised reviewApprove or reject within the agreed scope
Consider a finance team that receives invoices by email and manually prepares entries for an accounting system. A pilot could capture the document, propose fields, check required references and send the item to a reviewer with any exceptions highlighted.
The reviewer remains responsible for the approved decision. An unfamiliar supplier, changed payment details or an unresolved discrepancy can be routed to a separate verification process. Payment release stays outside the pilot unless a separately approved scope explicitly includes it.
This is an illustrative design, not a description of a measured customer deployment. Its value is that the boundary can be tested: documents enter, proposals are checked, reviewers decide and the system records the outcome.
Define success before building the agent
Measure the current process using a representative sample. Record handling time, exception types, rework and the decisions that require human judgement. The sample should reflect the range of documents and edge cases the workflow will encounter.
Evaluate the proposed workflow against agreed reference answers. Review incorrect fields, missed exceptions, unnecessary escalations and unauthorised-action attempts. Report the denominator and period for any performance figure. A convincing demonstration on a handful of selected documents is not a production accuracy result.
Keep documents and tool access within agreed boundaries
Define approved sources, roles, retention and external processing before selecting the technical design. Limit the agent's available actions to the task it is permitted to perform. Document content should be treated as input to review, not as authority to change the agent's instructions or permissions.
If an external model or service is used, assess its data-handling terms and configuration with your security and legal owners. Technology choices support those requirements; they do not automatically establish compliance. Changes to prompts, models, rules or integrations need versioning and evaluation before release.
Connect to systems through an agreed scope
An integration assessment should identify the accounting platform, document source, approval system and interfaces available. Confirm permissions, limits, record identifiers and failure handling before promising a connection. Access to an API does not settle how accounting records should be created or who can approve them.
Our AI agent development page explains the wider delivery approach. Where the task depends on controlled retrieval from policies or reference documents, LLM integration and RAG provides the related foundation.
Questions finance teams ask
001Will the agent approve invoices or release payments?
Only actions explicitly included in an approved scope should be available. A sensible initial boundary may stop at preparing a checked item for human review. Approval, posting and payment release are different actions with different risks. Your finance and security owners should decide the required controls for each.
002Can the workflow handle every invoice format?
That cannot be assumed. Document quality, layout, language, missing information and source variation affect performance. Evaluate representative material, including difficult examples, before agreeing coverage. The workflow needs a clear response when it cannot extract or validate a field reliably, including a route to a human reviewer.
003How will we know whether it saves time?
Measure the existing process and compare like-for-like work during the pilot. Include review, exceptions, rework and administration rather than counting only extraction time. Define the sample and reporting period. A useful result explains where effort changed and which parts of the process still require the team.
004Can it work with our accounting software?
That depends on the platform, available interfaces, permissions and the actions required. The assessment should verify those details and identify any third-party services or custom integration work. We do not assume that every system supports every operation or that a successful connection removes the need for reconciliation and monitoring.
005What happens when policies or approval rules change?
Assign an owner to update the relevant rules and reference material. Test the changed workflow against representative cases before release, including cases that should be rejected or escalated. Keep versions and a rollback path so an unexpected result can be investigated without losing the previous approved behaviour.
Start with one finance process you can evaluate
Describe the documents, checks and hand-offs that create repeated work. We can discuss a bounded pilot, its dependencies and the evidence your team needs before considering wider automation.
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