A company’s or business owner’s bank transactions may involve large amounts without necessarily representing their own income.
For example, this issue can arise for bank agents, intermediaries, or businesses that temporarily manage third-party funds.
This risk affects both individuals and companies.
In the case of individuals, a lack of supporting documentation may result in an unjustified increase in net worth.
In the case of companies, SUNAT (National Superintendency of Customs and Tax Administration of Peru) may classify such funds as undeclared taxable income.
In both scenarios, the burden of proof falls on the taxpayer.
The Origin of the Inquiry
The fact that money is deposited into a person’s accounts does not necessarily mean that the money constitutes a profit.
However, when SUNAT questions certain transactions, it is up to the taxpayer to provide documentary evidence of their nature.
What documentation might be important?
Depending on the activity, it may be necessary to provide:
- contracts;
- account statements;
- transaction reports;
- settlement statements;
- receipts;
- accounting records;
- third-party documentation;
- bank reconciliations.
An Excel file alone may not be sufficient if there is no documentation to verify the transaction.
The Risk of Unexplained Increase in Net Worth
When the origin of certain funds cannot be adequately substantiated, these amounts may be challenged for tax purposes.
Therefore, companies must maintain a clear traceability between the bank transaction and the underlying business transaction.
Source: Gestión (Peruvian Newspaper) — “Information on client funds passing through agent accounts”, August 30, 2026.
https://gestion.pe/
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