When reviewing the tax account, it is worth reconciling the data provided on the tax account and the surcharge statement, either electronically retrieved or received in the form of a statement of your tax account, with the data in your own records. It is important to note that the processing and booking of tax account data takes time, so it is not worth looking for items that the taxpayer has submitted or paid for a few days before the statement is prepared or the query is made.

The liabilities can be checked by comparing the tax returns or the NTCA decision (basic receipt) with the tax account data. It is worth checking whether the figures and amounts entered in the accounts correspond to the data declared. For other statutory prescriptions, the findings in the operative part of the final decisions should be reconciled.

It is advisable to check the cash flow items on the basis of the proofs of payments (e.g. cheque, transfer order). The first thing to check is that all the payments are in the tax account and that the amounts and dates of payment match the taxpayer's own records. For payments made in one lump sum (for example to the escrow account of the enforcement officer), the reconciliation requires more care. In such cases, the payment may be made in instalments for several tax categories, so the date of payment is used to determine whether the full amount paid is on the tax account.