Allowance Governance & Loan-Review AI Agent

What this agent does

Assembles the support, not the estimate

A quarter closes, and the loan tape is pulled from supported core, servicing and risk-rating systems.

A segment is reconciled to the general ledger, and any variance is named rather than carried as a plug.

Reason

A model input is traced back to the run, the period and the extract it was actually drawn from.

A qualitative factor is drafted with a directional rationale and a rationale for the amount moved.

An overlay is tested against a live basis document, and a basis that has lapsed is flagged.

Decide

A back-test compares prior estimates with realised write-offs, in aggregate and by portfolio.

A loan-review sample is stratified, and the file, covenant and rating tests are recorded per credit.

Out

A rating challenge is tracked to a response, and the lower rating stands until a concurrence is logged.

A write action runs only inside the approval boundaries agreed during implementation.

→ Product statement

The agent assembles the support; management sets the allowance, the CEO and CFO certify, and the Call Report adds officer and director attestations.

Example workflow

One quarter, tape to certification

AgentHuman

1Quarter-end tape receivedCore, servicing, risk-rating and charge-off systems

2Support assembledSegmentation, model inputs, factor series, overlay basis and prior-period estimates

3Rationale draftedSegment memo, factor rationale, overlay basis and confidence

4Controls appliedLedger reconciliation, factor-source checks, overlay-expiry checks and confidence threshold

No human action required

Stages 1 to 4 run unaided, and no number is set at any of them — the agent is assembling support, and the credit lane opens at the confidence gate.

5DecisionBranches at the confidence threshold

High confidence

Goes to management to approve.

Low confidence

Adds a loan-review read first.

Management approval

The pack is held with its source series, its open challenges and the confidence.

Approve · Amend · Send to loan review

Approved — released to the board pack▼

6Allowance systems updatedOnly where write access and approval policy allow it

7Outcome evaluatedAmendment distance, challenge outcomes, examination findings and out-of-period corrections

Amendments

Every management amendment is counted in the evaluation.

What should not run autonomously

Human approval stays in control

Outside the boundary — human approval required8 items

Setting the allowance balance or the provision.

Call Report attestations — officer, and directors by charter.

Assigning the final risk rating or classification.

Concurring with the line on a challenged rating.

Automation boundaryAgent acts unaided

✓Assemble the segment support and reconcile the tape to the ledger.

✓Trace each factor and model input to its source and period.

✓Carry the back-testing series forward, by portfolio.

✓Draft the rating challenge, and hold the pack for management.

Writes run only inside the boundaries agreed at implementation, and never ahead of approval.

Approving or extending a management overlay.

Independent validation of the loss-estimation process.

Changing segmentation, forecast period or reversion.

Changes to methodology, thresholds or approval rules.

Example output

One qualitative factor, annotated

Everything the agent assembles is attached to the series it was drawn from.

Allowance support output · single factorIllustrative example

Segment

Factor

Movement

Source of record

Confidence

Support status

CRE — non-owner occupied

Past-due and nonaccrual severity

+14 bps

Delinquency series

89%

Directional and quantum rationale

As receivedTaken from the delinquency series and the segment tape — nothing on this side is written by the agent.

Source facts used Delinquency series Nonaccrual roll-forward Segment charge-offs

Why this quantumBoth the direction and the amount trace to the series — neither is left as a residual.

ActionApproveAmendSend to loan review

What the score decidesBelow the configured threshold the factor picks up a loan-review read first.

Value

Where AI adds value

The same four claims, placed at the point in the workflow where each one applies.

Where the value landsValue 01 – 04

Every segmentFrom the quarter-end tape

03Support

Write the reasoning down

Examination findings named documentation first and factor support second — Federal Reserve, March 2025.

01Approved path

Support decides the estimate

Examiners generally should accept a supported, GAAP-compliant estimate — policy statement, April 2023.

02Human review

Challenge, not authorship

The independent read on a booked credit, not the origination memo — the reviewer did not approve it and reports to the board (85 FR 33278).

04Build an evidence trail

The factor, the evidence it rests on and the officer who certified stay on the allowance.

Integrations

Typical integrations

Five system groups connect to the same agent. Which of them are in scope is decided in discovery.

Core and servicingFIS · Fiserv · Jack Henry
Finastra · loan servicing

Allowance modelsAbrigo · Moody's Analytics
Wilary Winn · in-house models

Credit and loan reviewnCino · Baker Hill
Credit Quest · workpapers

Agent

Allowance support & loan review

Reads the tape
Assembles the support
Holds for approval

Close and reportingWorkiva · close tooling
Call Report · disclosure

Observability & evaluationOpenTelemetry · Langfuse
Supported monitoring/evaluation sources

Integration availability depends on the client's existing systems and API access.

Agent controls

Six layers between the model and the allowance

The six nest tightly, outer to inner. What escapes them all is listed in the map below.

L6 · Outermost — last line of defenceInward → L1 · closest to the model

L6Rollback / safe modeFall back to assembling support only, when evaluation or production signals degrade.Roll back

L5Version monitoringTrack model, prompt, factor-rule and segmentation-configuration changes.Track

L4TraceabilityRecord the source series, the drafted rationale, the challenges and the approval time.Record

L3Management approvalHold the pack for named management; it governs release, not whether the rationale is sound.Gate

L2Policy guardrailsTest drafts against the documented methodology and the factor rules; a failure returns the draft.Restrict

L1Confidence thresholdsRoute low-confidence factors to a loan-review read before management sees them.Require review

Model coreSupport drafted — segment memo, factor rationale, overlay basis and confidence

L1 – L2Test whether the support may stand

L3Puts the release in management's hands

L4 – L5Keep the factor and the evidence behind it

L6Falls back to support assembly when signals degrade

How Nestack evaluates it

Evaluate the support workflow — not only the finished memo.

Coverage runs the whole depth of the workflow, and every layer is cut by slice.

Surface — the pack the board and the examiner see

Depth of coverage ▼

E1Final-output evaluationDid every asserted factor trace to the series behind it?

E2Step-level evaluationDid the agent use the right tape, methodology and segmentation configuration?

E3Tool evaluationDid it read and write the correct segment and the correct period?

E4Confidence calibrationDo low-confidence factors actually attract more management amendments?

E5Slice evaluationHow does performance change across specific portfolio segments?

E6Business outcomeHow many factors were amended, or corrected out of period after certification?

Floor — the outcome the institution answers for

Failure modes

Where each failure originates in the agent

Seven failure modes, each placed at the stage where it originates.

Agent lifecycleDirection of processing →

01 · Retrieval1 mode

EA-03

Missing basis document

Carried-forward overlay has no live basis on file.

Stage gathersLoan tape, factor series, overlays and prior estimates

02 · Reasoning2 modes

EA-04

Unquantified factor move

Factor moves with its series but carries no quantum basis.

EA-06

Assumption change buried

Reversion change sits inside the aggregate variance.

Stage proposesSegment memo, factor rationale and confidence

03 · Tool / write2 modes

EA-02

Stale sample stratification

Review sample is drawn on last quarter's strata.

EA-05

Concurrence unrecorded

Challenge closes with no reviewer concurrence logged.

Stage writesOnly where write access and approval policy allow it

04 · Output1 mode

EA-01

Unreconciled variance

Tape-to-ledger gap carried as a plug.

Stage returnsThe support pack behind the estimate management set

05 · Change / Version1 mode

EA-07

Silent methodology drift

A model or rule change alters what the support asserts.

Stage tracksModel, prompt, factor rules and segmentation config

Sev-1 · support asserted outside the boundary Sev-2 · a wrong basis reaches the allowance Sev-3 · source degrades, factor goes to review

See the complete Banking failure-mode catalogue →

Affected slices

One weak segment can sit under a healthy total

A portfolio-level support score can read as adequate while a few segments absorb most of the amendments. Nestack reports the amendment rate by segment, not only in total.

Slice performance — reported separately, not only in aggregateIllustrative example

Slice	Failure rate	Lift	Status
Acquired and purchased pools	6.9%	3.6×	Review
Management overlays	4.8%	2.5×	Review
CRE concentrations	3.1%	1.6×	Watch
Seasoned retail segments	1.8%	0.9×	Normal

Bar: amendment-rate lift vs. seasoned-retail baseline · scale 0–4.0× · tick marks the 2.0× review threshold 2 of 4 slices over threshold

Evidence-linked improvement

The loop closes on a test, not a note

A cycle ends when the unsupported factor is a case the next release has to catch. That suite is what the next estimate supported is measured against.

Improvement cycle · five stagesSwitchback — the path turns at Improve and returns at Learn

01Detect

Amendment rate rises in a portfolio segment.

02Diagnose

The qualitative overlay nobody could point to a source for is read back until the cause narrows to one.

03Improve

The correction is numbered and the factors behind it are pinned to it.

04Verify

Every touched factor case runs again, and one fail stops the release.

05Learn

It is held permanently, and the segmentation rules shift alongside it.

Learn → DetectThe return edge. The next quarter is detected against a suite one case longer.

Typical build scope

Twelve workstreams across six weeks

The build scope read against the delivery timeline. Week structure follows the six-week plan — discovery, sources, support workflow, evaluation, integration, then production validation and handover.

Workstream Week 1Week 2Week 3Week 4Week 5Week 6

01Allowance workflow discovery and boundary mapping.

02Core, model and review source assessment.

03Methodology, factor and segmentation rule mapping.

04Loan-tape ingestion and reconciliation.

05Support assembly and source binding.

06Confidence scoring and challenge routing.

07Management approval workflow.

08Core and loan-system integration.

09Factor and back-testing cases.

10Guardrails and challenge controls.

11Portfolio-trail instrumentation.

12Deployment, documentation and Agent Care handover.

12 workstreams · 6 weeks · bar shows the weeks a workstream is active — several run in parallel Final scope and sequence confirmed in discovery

Engagement tiers

What each tier includes

Rows are the capabilities named in each tier's scope. Higher tiers include everything below them.

Capability✓ in scope · — not at this tier PilotOne portfolio, one quarter ProductionProduction credit systems AdvancedMultiple portfolios / entities

Introduced at Pilot

Support and challenge assembly✓✓✓

Management approval✓✓✓

Support-completeness baseline✓✓✓

Introduced at Production

Reporting by segment—✓✓

Challenge workflow in your systems—✓✓

Approved write-back—✓✓

Core and loan-system integration—✓✓

Introduced at Advanced

Multi-charter reporting rules——✓

Multi-stage credit approvals——✓

High portfolio volume——✓

Multi-portfolio review controls——✓

Build price From $5,000 From $8,000 Custom quote

Final build priceConfirmed after discovery based on integrations, workflow complexity, portfolio volume, approval controls and deployment requirements.

Separate from buildBuild pricing is separate from recurring Agent Care, which covers managed monitoring, evaluations, incidents and verified improvements after launch.

What we need from you

What you bring, and what we build with it

Each input maps to a piece of build scope and a week in the delivery timeline.

You bringWe build with it

01Your methodology document and segmentation → Methodology, factor and segmentation rule mappingWeek 1

02Representative prior-quarter allowance packs → Loan-tape ingestion, reconciliation and the support baselineWeek 2

03Your documented qualitative-factor definitions → Factor-definition mapping and automation-boundary definitionWeek 1

04Access to relevant APIs, feeds or exports → Core, model and loan-review assessment, then integration setupWeek 2

05Estimates you would not want examined → Adjustment cases and the evaluation suiteWeek 4

06What no qualitative factor may assert → Confidence scoring, challenge routing, guardrails and approval controlsWeek 3

07Named credit officers to review the pack → Management approval workflow, then pilot and production validationWeeks 5–6

Nothing else is required Deployment, documentation and Agent Care handover are ours.

Delivery timeline

Four phases across six weeks

Bands are drawn from the quarterly calendar rather than the plan, so the fifth holds two phases.

Phase W1W2W3W4W5W6

Discovery W1

Build W2 – W3

Evaluate W4 – W5

Pilot & Launch W5 – W6

Week focus W1Allowance workflow discovery, factor mapping and the automation boundary W2Source integration and the support-assembly baseline W3Support workflow, confidence logic and approval controls W4Evaluation suite, factor-support checks and failure-mode testing W5Loan-system integration, a pilot quarter and targeted corrections W6One quarter closed under the chief credit officer, then Agent Care handover

Reading the bandEach bar covers only the weeks its work is named in. The week 5 overlap is real, not padding.

At the end of W6The closing checks pass on a live quarter, and Agent Care takes monitoring on.

DurationSix-week plan shown · typical delivery 4–6 weeks depending on scope confirmed in discovery.

Next step · Banking AI agent

Build an allowance-support agent around your credit governance.

Show us your methodology, your factor definitions and who signs the pack. We found no enforcement action centred on allowance manipulation — the pressure here is examination, not penalty.

Discuss this agent →

Nestack Agents · Allowance governance & loan reviewAGT-BK-16 · Agent Care available after launch