What it is
It is the monthly file defined in section B of Anexo 24 (the SAT annex for electronic accounting): for each account, the month's opening balance, total debits (debe), total credits (haber) and closing balance. Containn computes it from the hotel's active pólizas (journal entries): the opening balance adds up everything before the month and the activity is the month's own. Cancelled pólizas do not count.
It is the same information as the on-screen trial balance, in the SAT's format. The grouping code does not go here: the SAT reads it from the chart of accounts.
When to use it
Every month. A legal entity (persona moral) files it within the first three days of the second following month; an individual (persona física), within the first five days. For example, a legal entity files its October trial balance within the first three days of December.
Step by step
- Close the month in Month-end close. A closed month takes no more pólizas, so the trial balance you file will not change afterwards.
- In Containn → Entrega al SAT (SAT filing), type the month in Mes (month), for example 2026-10.
- The Balanza de comprobación card shows how many accounts it carries and the total debits and credits. They must match.
- Click the file name to download it: the hotel's RFC (taxpayer ID), year, month and the letters BN (regular trial balance).
- Compress it into a .zip with the same name and submit it with the hotel's e.firma (its advanced electronic signature).
What the file looks like
<BCE:Balanza Version="1.3" RFC="HEJ150301AB1" Mes="10" Anio="2026" TipoEnvio="N" …> <BCE:Ctas NumCta="102-01" SaldoIni="85400.00" Debe="312750.00" Haber="298300.00" SaldoFin="99850.00"/> <BCE:Ctas NumCta="213-01" SaldoIni="9120.00" Debe="9120.00" Haber="10840.50" SaldoFin="10840.50"/> </BCE:Balanza>
Sample data. On a debit-nature account, the closing balance is the opening balance plus debits minus credits; on a credit-nature account, the opening balance plus credits minus debits.
Today it carries only the accounts that take postings (the lowest level) with a balance or activity in the month; summary accounts, such as the Caja (cash) general-ledger account, are not yet included with the sum of their subaccounts. Since the SAT requires the trial balance at least at general-ledger account and first-level subaccount level, review it with your accountant before filing. The complementary trial balance and the year-end adjusted one are not generated either.
What can go wrong
- Debits and credits do not match. It should not happen: no póliza is saved unless it balances. If you see it, do not file the file and contact support.
- An account in the trial balance is not in the chart the SAT has. It happens if you added an account without resending the chart, or deactivated an account that still has a balance.
- You corrected a month you already filed. The SAT requires replacing the file within five days of the change, as a complementary trial balance (complementaria). Until Containn generates it, that replacement is prepared outside Containn.