WorkflowBSA/AML Compliance

SAR Narrative & Filing

The SAR narrative and the FinCEN fields drafted from the case, checked three ways, signed by the BSA Officer

SARs drafted from the case and checked three ways, ready for the BSA Officer to sign.

See one case, screen by screen ↓
demo47documentsfrom six systems read overnight for one SAR, every value cited to its page
demo$1,500counted twiceone deposit in two overlapping alerts, found before QC and corrected from the ledger
target100%of SARs with every amount, date and name checked three ways before signature
target50%less narrative preparation time, against FinCEN's estimate of up to 315 minutes
In short

What is SAR Narrative & Filing?

SAR Narrative & Filing drafts the SAR narrative and the FinCEN SAR fields from the case for BSA officers. Seven agents read the case, write the narrative sentence by sentence with the W it answers and its citation, fill the fields with their sources and check every amount, date and name against the fields and the bank's records. The BSA Analyst prepares, the SAR Quality Reviewer passes it, and only the BSA Officer signs and files.

AI use cases in banking: a buyer's guide to agentic AI for bank and credit union operations →

Updated

The problem

Why the SAR narrative eats the 30-day clock

The SAR narrative is the part of a suspicious activity report that law enforcement reads, and it is written by hand. The BSA analyst re-reads the case, the alerts, the account ledger, the deposit tickets, the teller notes and the wire records, writes who, what, when, where, why and how, then keys the same amounts, dates and names again into the FinCEN SAR fields and builds a transaction table. A quality reviewer checks it all again before the BSA Officer signs. Every case runs on its own clock: 30 calendar days from detection, 60 when no suspect is identified.

The risk sits in the copies. When two alerts overlap, the same deposit is counted twice, and a narrative and an Item 29 that both say $186,400 next to a ledger that adds to $184,900 is what a QC reviewer or an examiner finds. Since the October 2025 interagency SAR FAQs, cash near $10,000 is not enough on its own; the narrative has to show why the bank suspects the activity was designed to evade reporting. And nothing about a SAR may reach the customer: one branch note that mentions a report is a disclosure.

typical25–315minutesFinCEN's estimate for the final preparation of one SAR alone
typical2.6millionSARs filed by banks and other depository institutions in fiscal 2024
Where one SAR's preparation hours goestimated
By hand5 hours
With the solution2.5 hours
  • Gathering the evidence from six systems1.5 → 0.5 h
  • Writing the narrative: who, what, when, where, why, how1.5 → 0.8 h
  • Keying the FinCEN fields and the transaction table0.8 → 0.3 h
  • Tying amounts, dates and names to the records0.5 → 0.3 h
  • Quality review against the checklist0.5 → 0.5 h
  • Signature, e-filing and the acknowledgment0.3 → 0.3 h

Estimated split for one structuring SAR at a community bank, by hand and with the solution.

How it works

How one SAR moves

Seven agents read the case, draft the cited narrative and fields, and check every number; the analyst prepares and the BSA Officer signs.

What comes in
What arrives6 systems · case, alerts, ledger, wires, imaging, CTRs
Agents at work
Case reader47 documents, each cited
Then
Narrative drafterfive Ws, every sentence cited
Field mapperFinCEN SAR Parts I–V
Then
Consistency checkernarrative, fields, records
Then
QC checkerchecklist and FinCEN guidance
A person decides
Analyst prepares, reviewer passes, BSA Officer signsthree different people, reason codes on every change
What comes out
Filed with FinCEN
Sealed five years
Examiner pack
One case, step by step

One SAR narrative, from the overnight draft to filed on day 26

Tessaly Community Bank detected suspected structuring by Northgate Resale Supply LLC on October 1, 2026: 24 cash deposits at four branches, every one below $10,000, and six wires out to an auto dealer. Case TCB-2026-0418 is due Saturday, October 31. Here is Tuesday, October 27, screen by screen, in the working solution.

  1. 01Tuesday morning

    Her desk: four numbers and the clocks

    Dana Whitlock · BSA Analyst

    Fourteen SARs are in preparation, 4 are due within 7 days and 5 need Dana. Overnight the agents drafted 3 narratives and read 47 documents. The queue is ranked by days left, and each case says what the agents found: Northgate Resale Supply LLC, structuring, 4 days left.

    “Needs you — narrative says $186,400, the ledger adds to $184,900.”

  2. 02Drafted overnight

    The narrative, every sentence tinted by the question it answers

    Case reader and Narrative drafter

    The case reader read 47 documents from six systems; the drafter wrote 10 sentences with 20 citations, in an introduction, a body and a conclusion. Each sentence is softly tinted by whether it answers who, what, when, where, why or how, and the coverage line counts them: who 2, what 4, when 3, where 2, why 3, how 3. Beside it, the FinCEN SAR fields it feeds, each with its source.

    Item 29, $186,400: “Disagrees with the ledger.”

  3. 03One click on Why

    The reason for suspicion, cited to the teller's note

    Dana Whitlock · BSA Analyst

    Dana lights only the why sentences and clicks the September 18 citation. Teller note TN-0918-HS opens from document imaging, written at 1:42 PM by R. Almquist at the Harlan Street branch, with the cited words marked. The case reader read it at 0.97 confidence.

    “Customer asked what amount gets reported to the government. … He took back $5,500 of the $14,600 and said he would deposit it somewhere else. Deposited $9,100.”

  4. 04Case evidence

    Every source the agents read, with the cited lines marked

    Case reader

    Eleven sources from six systems: the customer profile, the teller identification record, the account ledger, two alerts, 24 deposit tickets, the teller note, six wires, the October 6 request for information, six currency transaction reports and the records policy. The open document shows the cited line and the sentences that cite it.

  5. 05Found at midnight

    Narrative, fields and records, checked three ways

    Consistency checker

    Nine facts sit in three columns: the narrative, the FinCEN fields and the systems of record. Seven agree. Two do not, and the checker names the cause: deposit TX-880508, $1,500 in cash at East Fenwick on September 24, sits in both alert AL-77120 and alert AL-77164, and the draft added the two extracts — 15 + 10 deposits, $113,200 + $73,200. The ledger has 24 deposits and $184,900.

    The consistency checker never resolves a disagreement itself; its tolerance on amounts is $0.

  6. 0610:06 AM

    Corrected from the system of record, with the reason on file

    Dana Whitlock · BSA Analyst

    Dana chooses “Use the ledger: 24 deposits, $184,900”. The narrative, Item 29 and the attachment change together, with reason CN-01, “Use the system of record”. All nine facts agree, and the duplicate stays visible, struck through, so the reviewer sees what changed. Keeping the draft amount would have needed an override reason code, OV-01 to OV-04.

  7. 07Part I

    The FinCEN SAR fields: “unknown”, never a guess

    FinCEN field mapper

    The three subjects are listed as BSA E-Filing will receive them, each field naming the document it came from. No source holds Lena Treloar's TIN or date of birth, so the field mapper checks the “unknown” box. Critical fields 41 of 41, 2 marked unknown, the narrative within 17,000 characters and one CSV attachment: checked against the BSA E-Filing rules, passed.

    The field mapper never guesses a TIN or a date of birth — it checks “unknown”.

  8. 0810:31 AM

    The QC checklist ticks itself; the reviewer passes it

    Lucas Brandt · SAR Quality Reviewer

    Tessaly's checklist v3.2 shows 14 of 14 checks passing, each with its evidence and its rule. The structuring check cites teller note TN-0918-HS and the split deposit on September 18, under the October 9, 2025 SAR FAQs, Q1. Lucas agrees check by check and passes QC; he could return it with a reason code, QC-01 to QC-05, but he cannot edit the narrative.

    Check 6: “Structuring: evidence the activity was designed to evade reporting, not only amounts near $10,000.”

  9. 0910:44 AM · day 26 of 30

    Three people, three gates — the BSA Officer signs and files

    Renee Coyle · BSA Officer

    Prepared by Dana Whitlock, reviewed by Lucas Brandt, signed by Renee Coyle, who did neither. After her attestation, the E-Filing clerk checks the filing against the BSA E-Filing rules, submits it at 10:44 AM and records the acknowledgment at 10:52 AM, BSA ID 00000248816407. The SAR is sealed with its 47 supporting documents.

    “Filed on day 26 of 30 and sealed until October 27, 2031.”

  10. 1010:45 AM

    What the teller, the customer and the partner program see: nothing

    Confidentiality guard

    The guard renders each customer-facing view of Northgate and checks it for a flag, a note, a status or a hold reason that could tip off the customer. The teller sees “Questions about a letter: refer to the BSA Office” and cash deposits accepted as usual; online banking shows the October 6 letter and no notices; the partner program portal shows only its own referral, QP-2610, as “review complete”, with no case number and no filing decision.

    “Nothing reveals a SAR.”

Who it’s for

Built for the BSA Office: three people on every SAR.

The same Northgate SAR, seen by the four people around it — what their month looked like, and what it looks like now.

DW
Dana WhitlockBSA Analyst · prepares the SAR
BSA Analyst
Before
Carries five to seven SAR cases at once, each on its own 30-day clock, and writes the same facts three times: in prose, in the FinCEN fields and in a transaction table.
Now
Starts from a cited draft with the fields filled and the disagreements named; corrects from the system of record with a reason code and sends it to QC.
LB
Lucas BrandtSAR Quality Reviewer · passes or returns
SAR Quality Reviewer
Before
Re-reads the whole case against the bank's checklist to find which sentence answers why, and where it came from.
Now
Sees 14 checks ticked, each with its evidence and rule; passes QC or returns the SAR with a reason code, and never edits the narrative.
RC
Renee CoyleBSA Officer · signs and files
BSA Officer
Before
Signs every SAR the bank files and answers to the board and the FDIC examiner for every number in it.
Now
Signs only after QC has passed, on a SAR she neither prepared nor reviewed, and sees the acknowledgment and the seal on the same screen.
MO
Margaret OseiInternal Auditor · samples filed SARs
Internal Auditor
Before
Needs who decided, when, why and what they were looking at, without reading the case file.
Now
Builds an examiner pack from the audit trail for the FDIC examiner, a state examiner, internal audit or the BSA Officer, redacted for the audience.
Built on the engine

7 agents. Each with one job, and hard limits.

Seven agents read the case, draft the cited narrative and fields, and check every number; the analyst prepares and the BSA Officer signs.

Case reader

Reads the case file, the alerts, the ledger, deposit tickets, teller notes, wires, the customer profile, letters and currency transaction reports, and cites every value to its page.

  • Never reads outside the sealed case
  • A value under 0.90 confidence goes to the analyst
Narrative drafter

Writes the introduction, body and conclusion, tagging each sentence with the W it answers and its citations, and proposes the changes the analyst asks for.

  • Never writes a fact without a citation
  • Never “see attached”; never sends
FinCEN field mapper

Fills Parts I–V of the FinCEN SAR from the case and builds the transaction CSV attachment from the ledger.

  • Never guesses a TIN or a date of birth — it checks “unknown”
Consistency checker

Compares every amount, count, date, name and branch across the narrative, the FinCEN fields and the systems of record, and names the cause of any disagreement.

  • Never resolves a disagreement
  • $0 tolerance on amounts
QC checker

Runs the bank's 14-check list, FinCEN's narrative guidance and the October 2025 SAR FAQ checks, citing each result.

  • Never passes QC; the SAR Quality Reviewer does
Confidentiality guard

Seals each SAR, logs every opening, and every 15 minutes reads each customer-facing output linked to a sealed case for anything that would reveal a SAR, and holds it.

  • Never reveals a SAR's existence, even in its own notices outside the sealed case
E-Filing clerk

Builds and submits the filing after signature, reads FinCEN's acknowledgments, writes the BSA ID onto the case, routes a rejection to its preparer in plain words and seals the SAR for five years.

  • Never submits without the BSA Officer's signature
  • Never sends twice
BSA Officer

Signs and files; never on a SAR she prepared. The agents propose; a named person decides.

Ask in plain words

Ask about any SAR narrative, in plain words

Ask about any case, sentence, field or rule, or tell the drafter what to change. Every answer points to its source, and nothing in a SAR changes until a named person accepts it.

Why is the amount $184,900 and not $186,400?

One deposit was counted twice. Deposit TX-880508, $1,500 at East Fenwick on September 24, is in alert AL-77120 (ends September 24) and in AL-77164 (begins September 24). The draft added the two extracts — 15 + 10 deposits, $113,200 + $73,200. The core banking ledger has 24 deposits and $184,900.

Does Northgate meet the structuring standard after the October 2025 FAQ?

Amounts near $10,000 alone would not be enough (FAQ Q1, October 9, 2025). Here there is evidence of intent: on September 18 Gavin Treloar asked a Harlan Street teller what amount is reported, then took back $5,500 of $14,600 and deposited it at Millbrook that afternoon. QC check 6 cites both.

Which SARs are due this week?

Four, all on the 30-day clock: Marisol Fenwright (day 27, due Friday, waiting for the BSA Officer), Northgate Resale Supply LLC (day 26, due Saturday), Quillfield Pay program (day 25, with QC) and Renmark Logistics Inc. (day 24, needs you). Three are already escalated at day 25.

List the wires by date

Proposed sentence, for you to accept or reject: “Funds left the account in six outgoing wires to Pellham Auto Group Inc., an auto dealer at an unaffiliated bank, each described as ‘inventory’: $28,400 on September 4, $31,900 on September 15, $26,500 on September 21, $29,700 on September 29, $27,300 on October 2 and $27,500 on October 9, 2026, for a total of $171,300.”

Every screen

The working solution, as it ships.

13 screens from the working solution, on its sample data. Pick one to see it large.

The SAR narrative weaveThe SAR narrative in an introduction, body and conclusion, each sentence tinted by the W it answers and cited, with the coverage line above and the FinCEN SAR fields and their sources beside it.
The BSA analyst's deskFour numbers and the cases ranked by days left, each with what the agents found overnight.
A citation, openedThe why sentences lit, and the teller's note behind one of them, with the cited words marked and the system it came from.
Case evidenceEleven sources from six systems, the cited line highlighted and the sentences of the narrative that cite it.
Checked three waysNine facts across the narrative, the FinCEN fields and the systems of record, with the cause of the one disagreement: a deposit in two overlapping alerts.
Corrected from the ledgerThe narrative, Item 29 and the attachment corrected together with reason CN-01, and the duplicate left visible for the reviewer.
The FinCEN SAR fieldsPart I subjects as BSA E-Filing will receive them, each field with its source, and “unknown” checked where no source has the value.
SAR quality controlThe bank's 14-check list with its evidence and rule per check, and the reviewer's pass or return with a reason code.
Sign and filePreparer, reviewer and signer as three people, the BSA Officer's attestation, the filing to BSA E-Filing, the acknowledgment and the seal.
SAR confidentiality: the customer view checkWhat a teller, the customer's online banking and a partner program see of the case: nothing that reveals a SAR.
SAR filing deadlinesEvery 30-day and 60-day clock with its due date and escalation, the BSA Officer at day 20 and the Chief Risk Officer at day 25.
Audit trail and examiner packEvery action by a person or an agent, and a pack for the FDIC examiner, a state examiner, internal audit or the BSA Officer, redacted for the audience.
The board reportSARs filed by month and by kind of activity for the Board Risk Committee, counts only — no subject, case or account.
Governance

SAR filing that is cited, separated and sealed.

Every sentence cites its sourceEvery sentence of the SAR narrative and every FinCEN field carries its source passage, one click away. A sentence without a citation blocks signature.
Three different people on every SARThe BSA Analyst prepares, the SAR Quality Reviewer passes or returns, and the BSA Officer signs and files, or decides not to file with a reason code. No one holds two of these roles on one SAR.
A reason code on every changeCorrections carry CN-01 to CN-03, overrides OV-01 to OV-04 and QC returns QC-01 to QC-05. Every override is shown to the BSA Officer at signature.
Sealed, with every opening loggedAccess is by case role, and every opening of a sealed SAR asks for a reason and is logged. TINs and account numbers are masked to the last four outside Part I, and administrators cannot read case content.
No tipping offThe confidentiality guard reads customer-facing outputs for anything that would reveal a SAR and holds it. A partner program sees “review complete”, never the filing decision, and the board sees counts only.
Five years on the recordThe filed SAR and its supporting documents are kept five years from filing; a legal hold extends it. Every action by a person or an agent is on the audit trail, and an examiner pack is built from it.
Configuration

Your BSA program's rules, as settings

The clocks, checks and limits every SAR is held to are settings. Rules fixed by regulation stay fixed — 30 days to file, 60 with no suspect, five years to keep — and every change is proposed, approved and versioned.

SettingDefaultChoose from
First escalation — BSA OfficerDay 20From day 10 to the day before the second escalation, one day at a time
Second escalation — Chief Risk OfficerDay 25Up to day 29, one day at a time
Batch time for BSA E-Filing4:00 PM4:00 PM · 12:00 PM · 9:00 AM
Confidence threshold for extracted values0.900.70 to 0.99, in steps of 0.05
October 2025 FAQ checksOnOn · Off
Continuing-activity filingsElected for cases the BSA Officer marksOn · Off
Deputy BSA Officer co-signs when Item 29 is over $1,000,000OffOn · Off
Three different people on every SAROnAlways on
Connections

Works with the systems a SAR is built from

Case management and alertsthe case file and the transaction monitoring alerts escalated to it
Core banking systemthe account ledger, the customer profile and its expected activity
Payments huboutgoing wires with beneficiary, date and description
Document imagingdeposit tickets, teller notes and letters to the customer
CTR filingsthe currency transaction reports already filed on the subjects
FinCEN BSA E-Filingsubmission after signature, acknowledgments, BSA IDs and rejections
What it changes

The difference, in numbers.

Every figure is labelled: a target the solution is built to, an estimate, a typical published result, or a proven one.

target
100%
of SARs with every amount, date and name checked three ways before signature
Every SAR
narrative · fields · records
typical
30days
to file from detection, 60 with no suspect — every clock tracked and escalated
target
50%
less narrative preparation time, against FinCEN's estimate of up to 315 minutes
By hand25–315 minutes
With agentshalf or less

“demo” = seen in the working solution, on its sample data · “target” = the design goal, measured in the live solution · “estimated” = our estimate · “typical” = published figures (FinCEN SAR statistics, fiscal year 2024 — 2.6 million SARs filed by depository institutions; FinCEN's paperwork-burden estimate for the FinCEN SAR — 25 to 315 minutes for final preparation of one report). Rules named: 31 CFR 1020.320; FinCEN, Guidance on Preparing a Complete & Sufficient SAR Narrative (2003); FinCEN, Federal Reserve, FDIC, NCUA and OCC, SAR FAQs (October 9, 2025). Banks, partner programs, companies, people, account numbers and BSA IDs named on this page are fictional — characters and sample data in the working solution.

Questions

What BSA officers ask us.

What is SAR Narrative & Filing?

SAR Narrative & Filing drafts the SAR narrative and the FinCEN SAR fields from the case for BSA officers. Seven agents read the case, write the narrative sentence by sentence with the W it answers and its citation, fill the fields with their sources and check every amount, date and name against the fields and the bank's records. The BSA Analyst prepares, the SAR Quality Reviewer passes it, and only the BSA Officer signs and files.

What should a SAR narrative include?

FinCEN's narrative guidance asks for who, what, when, where, why and how, in an introduction, a body and a conclusion, in plain text with no “see attached” and no tables. The coverage line counts the sentences that answer each W, and a missing one becomes a question from the drafter to the analyst. Transaction detail goes in the CSV attachment, not the narrative.

What are the SAR filing requirements and the deadline?

Under 31 CFR 1020.320 a bank files within 30 calendar days of initial detection, up to 60 when no suspect is identified, keeps the SAR and its supporting documents five years, and never discloses a SAR. Every open case shows its day and due date, and escalates to the BSA Officer at day 20 and the Chief Risk Officer at day 25, both settings. Continuing-activity filings are planned only where the bank's policy elects them.

How does it handle structuring after the October 2025 SAR FAQs?

The interagency FAQs say cash near $10,000 is not on its own a basis for a SAR. The QC checker's structuring check asks for evidence the activity was designed to evade reporting, and cites it — in the sample case, the teller's note and the split deposit on September 18.

What happens when the narrative and the FinCEN fields disagree?

The consistency checker shows the disagreement and its cause, and never resolves it. The analyst corrects from the system of record with a correction code, or keeps the draft with an override code that the BSA Officer sees at signature.

How does it keep a SAR confidential?

Each SAR is sealed, access is by case role, and every opening is logged with a reason. The confidentiality guard reads customer-facing outputs — letters, branch call notes, partner program messages, online banking notices — for anything that would reveal a SAR and holds it. A customer view check shows what a teller, the customer and a partner program see.

Do people stay in control of what is filed?

Yes. The agents may not sign, file, pass QC, resolve a disagreement or contact a customer. Three different people prepare, review and sign each SAR, the BSA Officer can decide not to file with a reason code, and agent and prompt versions, confidence thresholds and override reason codes are settings for your model risk team to review.

How long does it take to go live?

The Agentic Solution Engine builds and deploys it from your requirements and documents — your SAR narrative template, QC checklist, escalation policy and a sample of past SAR cases — and it goes live once every quality gate has passed. We will walk you through it on your own cases first.

See it on
your SAR cases.

We'll run SAR Narrative & Filing on a sample of your own past SAR cases.