Settlement Reconciliation

Settlement reconciliation is the process of confirming that the money actually settled between parties matches the amount that should have settled according to the transactions cleared, after fees, adjustments and netting. It checks the final step of a payment, when funds move between accounts and obligations are discharged, rather than the earlier steps of authorisation and clearing. Merchants, acquirers, card issuers, banks, money transfer operators and securities firms all perform it, usually every settlement day.

It is the bridge between transaction reconciliation, which pairs individual records, and bank reconciliation, which agrees cash balances. Settlement reconciliation is needed because settlement is often net, delayed and bundled: a single movement of funds can represent thousands of transactions minus many kinds of fees. Unreconciled settlement breaks expose firms to losses and to settlement risk.

Think of a group of friends who share a flat and keep a running list of who paid for what. At the end of the month they work out one figure per person, "Sam owes 40, Priya is owed 25", and settle up with a few transfers rather than dozens. Before anyone sends money, each person checks the list to make sure the final figure is right.

Payment systems do the same, on a vast scale. Card networks, clearing houses and partners add up the day's activity, deduct fees, and move one net amount. Settlement reconciliation is each participant checking that this net amount matches its own records of the day's activity, and chasing any gap.

In card payments, authorisation, clearing and settlement are separate steps, described under authorization and settlement. After clearing, the card networks calculate net positions for each issuer and acquirer and instruct settlement through settlement banks. Issuers pay acquirers the value of purchases less interchange; both pay scheme fees. The acquirer then funds its merchants, net of its own charges.

A merchant's reconciliation of a card payout can be written as:

• $P$ is the payout the acquirer or processor deposits.
• $\sum S$ is the sum of cleared sales in the settlement batch.
• $\sum R$ and $\sum CB$ are refunds and chargebacks in the batch.
• $F_{\text{total}}$ is all fees: interchange, scheme fees and the acquirer's margin, or a blended rate.

Worked example: a batch of 50,000 in sales, 1,000 in refunds and 500 in chargebacks, with fees of 1,200, should produce a payout of 50,000 − 1,000 − 500 − 1,200 = 47,300. If the bank shows 46,800, the 500 difference may be an unexpected fee, a sale missing from the batch, or a reserve deduction, and the settlement report is examined line by line. Merchants on interchange++ pricing can check each fee component separately; merchants on blended pricing can check only the total.

Banks reconcile their own settlement positions with each payment system they use:

• Net settlement systems. In deferred net settlement systems, such as ACH networks and many card schemes, a bank checks that the net amount debited or credited to its settlement account equals the net of its own sent and received items for that cycle.
• Gross settlement systems. In RTGS systems such as Fedwire and in instant systems such as FedNow, each payment settles individually, so the bank matches every settled message with its internal records and agrees its reserve-account balance with the central bank's statement.
• FX settlement. Banks using CLS reconcile pay-ins and pay-outs in each currency against CLS reports.
• Correspondent accounts. Balances in nostro accounts are reconciled daily against the correspondent's statements.

The net position checked in these systems is:

where $N$ is the bank's net settlement position for the cycle. A bank that received 8 million and sent 9 million should see a net debit of 1 million on its settlement account.

Money transfer operators reconcile prefunded balances with each payout partner: the opening balance, less transfers paid out and partner fees, plus top-ups, should equal the partner's reported closing balance. Where the corridor uses stablecoins for settlement, the firm also matches on-chain transfers, identified by transaction hash, with the partner's credits, as described under stablecoins for settlements. Securities firms reconcile trades settled at central securities depositories against expected deliveries and payments.

Common causes include transactions cleared in one cycle but settled in another, fees charged at different times from the sales they relate to, currency conversion on cross-border sales, partial batches after a processing outage, and late-arriving chargebacks. Most firms automate settlement reconciliation from network, processor and bank files, often through a reconciliation API, and track breaks in an ageing report. The results feed the wider multi-step reconciliation of each payment flow and the month-end account reconciliation.

• Visa Core Rules and Visa Product and Service Rules
• CPMI-IOSCO: Principles for Financial Market Infrastructures