Reconciliation

Reconciliation is the process of cross-checking two sources of information that record the same economic events, to verify that they match and to identify the differences when they do not. The best-known case is bank reconciliation: comparing the statement the bank sends against the entries in the general ledger, item by item, until every dollar is accounted for.

The goal is not just "for the balance to come out the same", but to understand why it differs at a given moment: a check issued that the payee has not yet deposited, a transfer the bank credited but accounting has not yet recorded, fees or taxes that show up on the statement without a document of their own. Reconciling means matching what does agree and bringing to light what does not, which is exactly where errors, duplicates and fraud hide.

In administrative practice, much of the reconciliation work starts with reading documents: PDF statements, invoices, receipts and payment confirmations. Structuring that data so it can be cross-checked is part of what Arconte automates with intelligent document processing.

How a reconciliation works, step by step

Beyond the bank case, reconciliation always follows the same logic: take two lists of transactions, define a matching key (amount, date, document number, reference) and pair them one by one. What gets paired is reconciled; what is left without a match on either side are the reconciling items, which need to be investigated and resolved.

1. You get both sources for the same period (for example, the bank statement and the ledger for the bank account).
2. You match the transactions that agree exactly.
3. You identify the differences: deposits in transit, outstanding checks, bank debits not recorded, typing errors.
4. You adjust what needs adjusting in the books and document what is a legitimate timing difference.
5. The reconciled balance ends up the same on both sides, with every difference explained in writing.

Why it matters in a company

Reconciliation is a basic internal control: it is the most concrete way to know that the money the company thinks it has is the money it really has. An up-to-date monthly bank reconciliation catches in time an improper charge, a transfer that never arrived or a duplicate payment to a supplier. When it is not done, the differences pile up for months, and by the time the books are closed nobody knows which of the two balances is the right one.

The same applies to other types of reconciliation that are common in Argentine administration:

• Accounts receivable reconciliation: comparing what the company says customers owe against what customers say they owe (key for collections and for cleaning up accounts receivable aging).
• Accounts payable reconciliation: purchase orders against delivery notes against supplier invoices, known as the three-way match.
• Card and payment gateway reconciliation: what the processor settles against what the sales system recorded, net of fees and withholdings.
• Tax and withholding reconciliation: VAT and gross income tax (Ingresos Brutos, Argentina's provincial turnover tax) withholdings that the bank applies and that must be matched against the certificates.

A concrete example

A small business in Buenos Aires gets paid by bank transfer, direct debit and Mercado Pago. At month end, the bank statement shows 480 transactions and the management system about as many. Done by hand in Excel, reconciling those two columns takes the administrative team two or three days, and there are almost always "small differences" nobody ever fully resolves: a fee of ARS 1,840 the bank charged without notice, a customer who paid ARS 50,000 but was applied to a different invoice, a Mercado Pago credit that came in net of fees and does not match the invoiced amount. Each of those reconciling items is detective work. Reconciling well turns that noise into information: how much is going out in fees, which customers' payments are being misapplied, where there is a payment that never came in.

Common mistakes

• Confusing matching balances with a completed reconciliation: two balances can agree by chance while carrying two errors that cancel each other out.
• Leaving reconciling items "for next month" until they become impossible to trace.
• Reconciling only the total and not transaction by transaction, which is where duplicates show up.
• Not documenting the difference: a reconciliation without a written explanation of each discrepancy is useless as a control.

Reconciliation vs bookkeeping entry

It is worth not confusing reconciling with recording. They are different stages of the same flow:

In high-volume companies, reconciliation tends to be automated with matching rules and document reading, leaving the person only the exceptions that do not match. That approach, reconciling by exception, is what cuts administrative time the most without losing control.

Reconciliation in the United States

In the United States, account reconciliation is a standard part of the month-end close, and for public companies it is one of the key internal controls auditors test under the Sarbanes-Oxley Act (SOX). Checks are still common in US business payments, so outstanding checks remain the classic reconciling item, alongside ACH transfers and card settlements that arrive net of processing fees. The logic is the same as in Latin America: two sources, a matching key and every difference explained in writing.