Financial Reconciliation Workflow: Bank, Ledger and Processor Matched Daily
Reconciliation is matching: bank lines to ledger entries, processor payouts to invoices, intercompany balances to each other. Almost all of it is deterministic, and the part that is not — explaining why a break exists — is what the AI agent does. The workflow runs daily, so month-end becomes a short list of unexplained items instead of a week of matching.
Written by Max Zeshut
Founder at Agentmelt · Last updated Sep 11, 2026
The problem
Reconciliation happens at month-end, by hand, in spreadsheets. Payment-processor fees, refunds and timing differences create hundreds of small breaks that take days to explain, and the close slips.
What changes when it runs
Every morning the ledger is matched to yesterday's bank and processor activity. Auto-matches are posted, proposed entries for known patterns (fees, FX, timing) wait for one-click approval, and the controller sees only the genuinely unexplained breaks with the agent's best explanation attached. Close time drops from days to hours.
Trigger, then 8 steps
Trigger
Schedule Trigger (daily, after bank feeds settle)
Daily run at 6am after bank and processor feeds update; on-demand run before close.
Pull the three sides
HTTP RequestBank transactions (Plaid or bank API), processor payouts and transaction detail (Stripe, Adyen, PayPal), and ledger entries (NetSuite, Xero, QuickBooks, Sage) for the period.
Match deterministically
CodeExact matches on amount and reference; one-to-many for processor payouts (payout = sum of transactions − fees − refunds); tolerance matching for FX; each match tagged with the rule that made it.
Classify the breaks
CodeUnmatched items grouped: timing (in transit), fees, refunds, chargebacks, duplicates, unknown. Known patterns get a proposed journal entry from the rules sheet.
Explain the unknowns
AI AgentFor remaining breaks the agent reads the descriptions, amounts, dates and nearby transactions and writes the most likely explanation with the evidence — never posting anything.
Route for approval
SlackProposed entries and explanations to the accountant with approve / edit / investigate buttons; anything above a threshold goes to the controller.
Post approved entries
HTTP RequestApproved journal entries posted to the ledger with the match evidence attached; the reconciliation report updated.
Maintain the reconciliation file
Google SheetsA living reconciliation per account: matched, proposed, open, aged — the file auditors ask for, always current.
Close-readiness report
Schedule TriggerDaily count and value of open breaks by age and type; a red flag when an item passes 5 days unexplained.
Data it touches
- Bank feeds (Plaid, direct bank API)
- Payment processors (Stripe, Adyen, PayPal, Braintree)
- General ledger (NetSuite, Xero, QuickBooks, Sage)
- Matching and journal rules (finance-owned sheet)
Guardrails
- Nothing posts to the ledger without an accountant's approval; auto-matching only marks, it does not create entries.
- The agent explains; it never proposes an amount that is not derivable from the data.
- Every posted entry carries the match evidence and approver for audit.
- Aged open items escalate automatically so nothing hides until close.
Daily beats monthly
A break that is one day old is easy to explain: the transaction is right there. A break that is thirty days old is an investigation. Running the match daily is the single biggest change, and it is pure scheduling — the same matching logic, run every morning instead of once a month. The close stops being an event because the reconciliation is always nearly done.
Processor payouts are where the breaks live
A Stripe payout is one bank line that represents hundreds of transactions minus fees minus refunds plus adjustments. Matching it by hand is where reconciliation time goes. The one-to-many step uses the processor's own payout report to decompose each payout, matches the components to invoices, and proposes the fee and refund entries automatically. Most teams see their unmatched count fall by an order of magnitude from this step alone.
Tools in the stack
| Tool | Role in this workflow |
|---|---|
| n8n | Data pulls, matching engine, approvals, posting |
| Claude | Break explanations |
| NetSuite / Xero / QuickBooks | Ledger |
| Stripe / Adyen + Plaid | Processor and bank data |
Want this running without building it?
Automation workflow
$297/month
We set up, host and maintain this workflow on n8n and connect it to your tools. Setup included, cancel monthly, you keep the JSON.
Custom build
$5,000–9,000 one-time
Your systems, your rules, your edge cases. A one-off build on Claude and n8n, delivered with documentation and a walkthrough.
Covers one entity, one ledger, up to three bank/processor sources and 10,000 transactions a month. Multi-entity and intercompany reconciliation are a custom build.
Frequently asked questions
Does this replace our accountant?
It replaces the matching. The accountant approves proposed entries, investigates the genuinely unexplained breaks with the agent's notes, and owns the close.
Which ledgers are supported?
NetSuite, Xero, QuickBooks Online, Sage Intacct and Dynamics via API; others via export/import as a custom step.
Is it auditable?
Every match records the rule, every posted entry records the evidence and approver, and the reconciliation file is always current. Auditors get a live document instead of a month-end spreadsheet.
Case study
AI Finance Agent for Accounting Firm: 90% Faster Reconciliation
How a mid-size accounting firm used AI agents to automate bank reconciliation and reduce month-end close from 5 days to 1.
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The pillar
AI Finance Agent
Bookkeeping, reconciliation, and reporting—no code required.