Enter data directly in the table below or upload a CSV/Excel file.
In the table, provide Payment Deadline, Payment Date, and Amount. File import also supports Name, Type, and Id columns.
Review the data in the table.
Click 'Calculate Interest' to see the results.
Interest is calculated under the Polish Tax Ordinance; the interest amount is rounded to full PLN (Art. 63 § 1).
Upload CSV/Excel Files
Drag & Drop files here or click to browse
Free access is limited to 3 records. Upgrade to Premium to process larger files.
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