Running an accounting office, we often encounter questions that require confirmation of the interpretation of regulations. Recently, we had such a situation with one of our clients operating under the lump-sum tax system.

➡️ The client had a revenue correction that resulted in a negative revenue value in PIT-28. To ensure that we were accounting for everything correctly, we contacted the National Tax Information (KIS) directly.

Here is the most important part of the response we received:

If the value of revenue earned in a given settlement period is lower than the value of the correction made, the remaining portion of the revenue reduction should be accounted for in subsequent settlement periods until the correction is fully reported.

The key factor here is whether the correction results from an error – if not, we apply it in the current period, and if it does not “fit” within the revenue, we account for it in subsequent periods.