In brief: SAF-T UA readiness starts with reliable and traceable accounting. Valid XML cannot compensate for duplicates, missing documents or unexplained adjustments.
What is operational in 2026
The State Tax Service announced that Ukraine’s e-audit system became operational on 1 January 2026. Its primary data source is SAF-T UA, a standard audit file containing structured accounting and tax information.
As of publication, the official STS guidance specifically describes a requirement for large taxpayers to provide SAF-T UA upon request during a documentary audit within two business days. Submission is made through the private section of the taxpayer’s Electronic Cabinet. For SMEs, this article is a data-readiness plan, not a claim that every business currently has a general filing obligation.
What a machine review can see
SAF-T UA combines master data, the general ledger, accounting entries and source-document information in a defined XML structure. The STS publishes the XSD schemas, technical descriptions and examples used to validate file structure.
Automated analysis can highlight more than arithmetic errors. It can expose missing mandatory fields, inconsistent master data, broken links between entries and documents, duplicates and transactions requiring explanation. Producing XML once is therefore insufficient; the underlying records must be coherent.
A practical preparation example
A company maintains several counterparty lists, while some bank payments are closed through manual entries without links to source documents. The issue may remain hidden in a monthly summary, but a structured export will reveal duplicate records and entries without adequate evidence.
Preparation does not begin with buying another software module. The team first consolidates counterparties, defines mandatory fields, reconciles balances, links entries to documents and maintains an adjustment log. Only then does a test export provide useful insight rather than a long list of technical failures.
How to run a control test
Choose one closed period and create a trial dataset without sending it to the tax authority. Check conformance with the technical schema, master-data completeness, agreement of turnovers and balances, links to source documents and explanations for manual adjustments.
A FinanceOne express accounting review can separate structural validation failures, confirmed accounting discrepancies and signals that still require explanation. The outcome should be more than a valid file: it should be a findings register with evidence, owners and correction deadlines.
A rapid-review plan
Define the period, materiality and control sources: bank, ledger, contracts, source documents and submitted reports. AI can sort large data volumes, while professionals set criteria.
Create a findings register with amount, evidence, risk and recommended action. Separate confirmed errors from signals requiring explanation. Reconcile again after corrections.
What to measure
- Sample coverage
- Confirmed errors
- Value of explained differences
- Completed recommendations
Practical checklist
- ✓ Confirm whether the current requirement applies to your company
- ✓ Download the current STS XSD schema and technical description
- ✓ Clean counterparty and item master data
- ✓ Reconcile the ledger, bank data and filed reports
- ✓ Link entries to source documents
- ✓ Document manual adjustments and exceptional rules
- ✓ Run a test export for a closed period
- ✓ Retain an error, correction and retest log
FinanceOne perspective
SAF-T UA readiness starts with reliable and traceable accounting. Valid XML cannot compensate for duplicates, missing documents or unexplained adjustments.
To apply this approach in your business, begin with a review of the current process. Our express accounting review service can help establish a reliable foundation for further automation.
Express accounting reviewThis article is informational and does not replace individual accounting, tax or legal advice. Rules and business circumstances may change.