Automatic Monobank payment reconciliation with n8n

If your finance team still opens a Monobank statement every morning and ticks off which orders have been paid, you are paying skilled people to do work an API should handle. Manual reconciliation is slow, error-prone, and it scales badly: 30 transactions a day is tedious, 300 is a liability. Mismatched payments mean delayed shipments, duplicated refunds, and a month-end close that drags on for days.

The fix is not another spreadsheet. It is a reconciliation workflow that runs every few minutes without anyone watching it.

The business problem

Reconciliation breaks down in three predictable ways. Payments arrive without a clear order reference, so a human has to guess. Partial payments and overpayments don't match the invoice total, so they get parked and forgotten. And the data lives in two systems — the bank and your store or accounting tool — that never talk to each other. Every one of these gaps costs hours and erodes trust in your numbers.

The solution: an n8n reconciliation loop

n8n is a self-hosted automation platform, which matters here: your financial data stays on your own server, not a third-party SaaS. We build a workflow that connects Monobank's API to your order source — OpenCart, a Laravel app, WooCommerce, or a Google Sheet — and matches every incoming payment to the right order automatically. Confirmed matches update the order status; anything ambiguous is flagged for a human instead of silently failing.

Concrete steps

1. Get Monobank access. Generate a personal API token from Monobank's developer portal, or register a webhook so n8n receives each transaction the moment it lands.

2. Pull transactions. In n8n, a Schedule trigger fires every 5–10 minutes and calls the Monobank statement endpoint for the account, returning recent payments with amount, time, and the comment field.

3. Fetch open orders. A parallel HTTP Request or database node reads unpaid orders from your store — order ID, expected amount, and customer reference.

4. Match. A Function or Merge node pairs each payment to an order by reference code and amount. Exact match within a small tolerance → reconciled. No match or wrong amount → exception.

5. Act on the result. Reconciled payments trigger an update to the order status and a confirmation email. Exceptions go to a Telegram or email alert so finance reviews only the handful that genuinely need a human.

6. Log everything. Write each decision to a sheet or database table so you keep a clean audit trail for accounting.

The payoff

A workflow like this typically turns a daily reconciliation routine of one to two hours into a process that runs untouched, with staff handling only the exceptions. Your month-end close gets faster, refunds stop slipping through, and your order statuses reflect reality in near real time.

MaxiMoruM has built automation and payment integrations on n8n, Laravel, WordPress, and OpenCart for over 20 years, with native support for Ukrainian banking and delivery services. If manual reconciliation is eating your team's time, we can scope and deploy a workflow that fits your exact stack.

Start the conversation at https://maximorum.com/