I am not sure about the last phrase, I tried to avoid translating "gravar", buy I think arising might work, what do you think?

SEVENTH: (EXPENSES FOR BREACH OF CONTRACT): Expenses, fees, costs, damage, harm that the payment, legal or extralegal shall generate, as well as existing taxes or those arising from this contract, are to be charged to the Debtor.

SEPTIMA: (GASTOS POR INCUMPLIMINETO).- Son de cargo del DEUDOR los gastos, honorarios, costos, daños, perjuicios y demás gastos que la cobranza, judicial o extrajudicial originare y los impuestos existentes o a crearse que graven este contrato.------------------------