3. General Payment Terms and Conditions. The Company will pay the Contractor for the Services, in addition to reimbursable expenses, in accordance with the applicable SOW. Unless specified in a SOW, all fees paid by the Company to the Contractor include all applicable taxes and duties including, without limitation, sales tax, value added tax, and similar taxes. Fixed fees and hourly rates may not be increased without the Company’s prior written consent. Where the Contractor is to be paid on an hourly fee basis, the Contractor will submit an invoice to the Company for actual services rendered, and for reimbursable expenses incurred, no less than every two (2) weeks. Each invoice must cite this Agreement and the applicable SOW and must describe the Services and expenses for which payment and reimbursement is requested. The Company will pay the Contractor within thirty (30) days of the Company’s receipt of the Contractor’s invoice. The Company has the right to withhold payment for any disputed sums.