How do I calculate the taxable base?

The taxable base consists of the total amount of the consideration . Considerations are understood to be any effective credit in favour of the person carrying out the taxable transaction, derived from both the principal and ancillary services, received or to be received.

are included in the tax base:

The commissions, transport costs, packaging and containers (including those that are returnable), insurance, premiums for advance services, debts assumed in consideration of the operation and any other expense that is passed on to the recipient of the operation (except those supplied).

They do not form part of the tax base:

• The discounts and bonuses granted prior to or simultaneously with the time of carrying out the operation and which do not constitute the remuneration of other operations .

  When discounts or bonuses are granted after the transaction is carried out, the tax base must be modified. Likewise, the tax base must be modified when containers or packaging that can be reused are returned.

• Interest for the deferral or delay in payment of the price usually applied in the market , which are subsequent to the delivery of goods or provision of services, provided that they are stated separately on the invoice . Interest established by law or a court decision as a result of late payment of the price and which is of an indemnifying nature, does not form part of the tax base. Example: late payment interest regulated in the Public Administration Contracts Law.

• The supplies : sums paid in the name and on behalf of the client , pursuant to express mandate thereof. It will be credited by means of an invoice issued by the supplier to be paid by the aforementioned client and not by the intermediary. (Example: fees for obtaining a driving licence paid by driving schools on behalf of and for the account of their clients).

When the consideration is not known at the time of accrual, it must be fixed provisionally. Once known, the provisional tax base must be rectified, if applicable.

If the transaction is in foreign currency, the selling exchange rate, set by the Bank of Spain, which is in force at the time of accrual, will be applied.

There are specialties in the case of exchanges, deliveries of several goods for a single price, self-consumption, links between the parties, operations between the principal and the commissioner (see article 79 LIVA )