## I.6. PAYMENT ARRANGEMENTS 

1. Payments under the FWC shall be made in accordance with Article II.20, which is complemented by Article IV.1.5 and the provisions of the specific contracts (Annexes I and IV). 

2. Payments shall be executed only if the contractor has fulfilled all its contractual obligations by the date on which the invoice is submitted. Payment requests may not be made if payments for previous orders or specific contracts have not been executed as a result of default or negligence on the part of the contractor. 

Not applicable. 

For services: 

## I.6.1. Pre-financing 

## I.6.2. Interim payment 

1 The contractor (or leader in case of a joint tender) shall send an invoice for monthly interim payment, starting with the second month of provision of services and covering the services provided in the previous month in accordance with Article II.20.6. 

2 The contractor (or leader in case of a joint tender) must send any invoice for the interim payment in paper format or via e-PRIOR. 

3 All invoices shall indicate both the contractor’s and the contracting authority’s VAT number. 

4. The contracting authority must approve any submitted documents or supplies/deliverables and pay within 30 days from receipt of the invoice. 

5. If the contracting authority has observations to make, it must send them to the contractor (or leader in case of a joint tender) and suspend the time limit for payment in accordance with Article II.20.7. The contractor (or leader in case of a joint tender) has 10 days to submit additional information or corrections or new supplies or a new version of the document if the contracting authority requires it. 

6. The contracting authority must give its approval and pay within the remainder of the time-limit indicated in paragraph 4 above unless it rejects partially or fully the submitted documents or supplies/deliverables. 

For supplies: 

The payment methodology will be established in the relevant specific contract. 

For services/supplies: 

## I.6.3. Payment of the balance 

1. The contractor (or leader in case of a joint tender) shall submit an invoice for payment of balance within 30 days after the end date of the specific contract in accordance with Article II.20.6. 

2. The contractor (or leader in case of a joint tender) must send any invoice for the payment of balance in paper format or via e-PRIOR. 

3 All invoices shall indicate both the contractor’s and the contracting authority’s VAT number. 

4. The contracting authority must approve any submitted documents or supplies/deliverables and pay within 30 days from receipt of the invoice. 

