Tax matching

Know the gap now, not after the letter arrives

Tax matching, fiscal adjustments, working papers, and a risk score are not add-on modules. They are all computed from the bookkeeping you do every day. Same source, so the figures cannot differ.

Book a demo See the four checks

About Coretax

What changed is not how you file, but what gets checked

Tax invoices, withholding slips, and bank movements are in the tax office’s systems before your return arrives. The four checks below are the easiest for a computer to run against that data, so they are most likely checked first.

The four checks

Four checks, every month end, automatically

Output VAT vs revenue in the books

The revenue you recorded is compared with the total tax base of the invoices you issued that month.

Explanations the system looks for by itself

Sales to non-registered buyers with no tax invoice
Advances where goods have not yet been delivered
Zero-rated export sales
Invoices booked in a different month from their invoice date

Input VAT vs purchases and costs

The purchases and costs you recorded are compared with the total tax base of the invoices you received.

Explanations the system looks for by itself

Salaries and benefits, which are outside VAT
Purchases from non-registered vendors
Non-creditable input VAT
Depreciation and amortisation

Withholding slips vs service costs

The service costs you recorded are compared with the tax base of every withholding slip you issued.

Explanations the system looks for by itself

Services from vendors holding a withholding exemption
Services outside the withholding scope
Payments to foreign parties, which fall under a different article
A gap between the month withheld and the month expensed

Employee tax vs salary costs

The salary and benefit costs you recorded are compared with the gross on your monthly payroll-tax return.

Explanations the system looks for by itself

Benefits in kind untaxed up to the regulated cap
Contributions paid by the company, not employee income
Severance taxed at a separate final rate
Salary that went into the cost of goods, not into expenses

One thing we deliberately do not do

We do not force the numbers to agree. If anything is left after every explanation is searched for, it is written down plainly as unexplained, with its amount. A system that closes gaps with a “miscellaneous adjustment” just moves the problem from your screen into your audit file.

The real screen

The tax centre, with sample figures

Click any row to see the explanations the system found and the remainder it could not explain.

Fiscal adjustments

Every adjustment has its statute

The legal basis is not free text typed by whoever prepared the report. It is pulled from a rule list with effective dates. So citing a non-existent article is impossible, and so is applying a rate that was not yet, or no longer, in force.

Certain

The rule is clear, the transaction data is complete, and no other reading makes sense. The system computes it and marks it certain.

Conditional

The result depends on something a person has not yet confirmed — whether a building counts as permanent, say. Both possibilities are shown.

Grey

In practice, readings genuinely differ, and we say so. You decide, and the decision is recorded with your reasoning.

Admitting uncertainty is not a weakness. It is the condition of trusting the system at all. One that claims everything is certain loses your confidence the moment a single case is wrong, and never regains it.

Working papers

Seven files that collect themselves through the year

When a query letter lands or an audit starts, there is nothing to prepare. The file is already complete because it collected month by month. Every figure in it traces back to a journal entry, a document, and a statute.

For consultants & firms

There is a read-only access level made for you

Tax consultants and external auditors get their own access with their own limits. They can view, trace, and export working papers, but cannot change a single record.

Access is granted per company and revocable any time.
Everything they open is logged.
No more emailing spreadsheets back and forth.
Clients pay nothing for “extra users”, because our price is flat.

Roles × permissions

Where responsibility lies

What we guarantee, and what we do not

We guarantee

Repeatable calculation: the same input always gives the same figure, whenever you re-run it.
The rule used is the one in force on the transaction date, not today’s.
Every figure is traceable to its journal entry and source document.
Records cannot be changed quietly, including by us.

We do not guarantee

That your tax positions will be accepted by an auditor. No one can guarantee that.
That wrong data going in will still give right numbers out.
That the system replaces expert judgement on grey cases.
That tax obligations become ours. They remain yours.

Next step

We will check your last four months

Bring four months of data. We run all four checks in front of you, then show which gap is most likely questioned first, along with the explanations already sitting in your own data.

Book a demo See pricing

No credit card. No commitment. We prepare the sample data.