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Best Practices

Explaining SAP's exchange rates and VAT

  • Updated: 21 June 2026

A practical guide to the tax fulfillment date and the tax reporting date, why they are required on journal entries, and which countries enforce them.

When does VAT become chargeable?

VAT becomes chargeable at the moment the tax authorities acquire the legal right to claim payment. This point in time, known as the chargeable event, normally arises once the conditions for applying VAT have been satisfied—typically after a taxable transaction has taken place. In some cases the chargeable event can occur during the transaction or even before it concludes, for example when an advance payment is received. Although the tax becomes chargeable at this defined moment, the payment itself is generally made later, when the company files its VAT return for the relevant reporting period.

What is the tax fulfillment date in SAP?

The tax fulfillment date identifies the moment at which the tax becomes chargeable, which corresponds to the point at which goods or services are actually supplied. Because this date is tied directly to the actual delivery date, companies can struggle to determine it accurately whenever that delivery date is not captured within their SAP environment. Recording the delivery date correctly is therefore essential to deriving a reliable fulfillment date.

What is the tax reporting date in SAP?

The tax reporting date represents the deadline by which the tax must be reported to the authorities. It can never fall earlier than the tax fulfillment date, since a tax cannot be reported before it has become chargeable. The reporting date is what links the chargeable event to the correct VAT return period.

How do the tax fulfillment date and tax reporting date differ?

The two dates serve distinct purposes and the tax authorities expect both to be present and consistent before a journal entry is accepted. The table below summarises the difference.

AttributeTax fulfillment dateTax reporting date
What it represents When the tax becomes chargeable The deadline for reporting the tax
Driven by The actual delivery of goods or services The applicable VAT reporting period
Timing rule Sets the earliest possible date Never earlier than the fulfillment date

Which countries require both dates?

These requirements originate from the validation rules issued by the Polish tax authorities, which mandate that both a tax fulfillment date and a tax reporting date appear on every journal entry containing tax items. The same underlying principle applies in several other jurisdictions, so organisations operating across the region should treat this as a broad compliance matter rather than a single-market concern. Countries with comparable expectations include:

  • Poland
  • Czech Republic
  • Hungary
  • Slovakia
  • Spain

Which transactions require special attention?

Beyond standard transactions, several scenarios complicate the determination of the correct dates and warrant close review so that the resulting journal entries withstand scrutiny from the tax authorities:

  • Prepayments (sent or received) — can trigger the chargeable event ahead of the actual supply.
  • Postponed accounting — alters the timing of when VAT is reported and recovered.
  • Recurring services — raise questions about which delivery date applies across an ongoing engagement.

Frequently asked questions

What is the tax reporting date in SAP?

It is the deadline by which a tax must be reported to the authorities. It is tied to the applicable VAT reporting period and can never be earlier than the tax fulfillment date.

What is the difference between the tax fulfillment date and the tax reporting date?

The tax fulfillment date is when the tax becomes chargeable, based on the actual delivery of goods or services. The tax reporting date is the deadline for reporting that tax, and it is always equal to or later than the fulfillment date.

When does VAT become chargeable?

VAT becomes chargeable when the tax authorities gain the right to claim payment—usually after a taxable supply, but sometimes earlier, such as when an advance payment is received.

Which countries require a tax fulfillment date and a tax reporting date?

Poland enforces these validations, and comparable rules apply in the Czech Republic, Hungary, Slovakia, and Spain.

Which transactions need special attention for tax dates?

Prepayments that are sent or received, postponed accounting arrangements, and recurring services all shift the timing of the chargeable event and require careful handling.

Disclaimer: This article is for general information only and is not tax, legal or financial advice. Tax rules differ by jurisdiction and change frequently. Consult a qualified professional about your organisation’s specific circumstances.

Richard Cornelisse
Richard Cornelisse
Expert in SAP VAT Solutions

Richard is a recognized expert in tax control frameworks, SAP tax determination, and tax function effectiveness, with over 30 years of experience in indirect tax, SAP VAT, and tax technology.