Contract no: [complete]  The date of payment is deemed to be the date on which the contracting authority’s account is debited.  Payments are made in euros, unless another currency is provided for in Article I.7. The contracting authority makes any conversion between the euro and another currency at the daily  euro exchange rate published in the Official Journal of the European Union, or failing that, at the monthly  accounting exchange rate, as established by the European Commission and published on the website  indicated below, applicable on the day when it issues the payment order. The contractor makes any conversion between the euro and another currency at the monthly accounting  exchange rate, established by the Commission and published on the website indicated below, applicable  on the date of the invoice.  http://ec.europa.eu/budget/contracts_grants/info_contracts/inforeuro/inforeuro_en.cfm The costs of the transfer are borne as follows:  If, as provided for in Article I.6 ,  a financial guarantee is required for the payment of pre-financing, as  performance guarantee or as retention money guarantee, it must fulfil the following conditions: a) the financial guarantee is provided by a bank or a financial institution approved by the  contracting authority or, at the request of the contractor and with the agreement of the  contracting authority, by a third party; and  b) the guarantee shall have the effect of making the bank or financial institution or the third party  provide irrevocable collateral security, or stand as first-call guarantor of the contractor’s  a) the contracting authority bears the costs of dispatch charged by its bank;  b) the contractor bears the costs of receipt charged by its bank;  c)  the party causing repetition of the transfer bears the costs for repeated transfer.  II.21.5. Pre-financing, performance and money retention guarantees  II.21.4. Costs of transfer  II.21.3. Conversion  II.21.2. Currency  II.21.1. Date of payment  II.21. PAYMENTS AND GUARANTEES  EC - FWC services Dec 2018  31 Ir Pr = Po x ( — )  Io where: Pr = revised price; Po = price in the tender;  Io = index for the month in which the FWC enters into force;  Ir = index for the month in which the request to revise prices is received. 