Income tax withholding: Annual

Sales tax withholding: Bimonthly

Industry and Commerce tax withholding: According to the periodicity for submitting the industry and commerce tax return for each municipality

Municipality Bogotá D.C: Bimonthly

Municipality Medellín: Annual

Municipality Santiago de Cali: Annual

Municipality Barranquilla: Monthly

Municipality San Carlos: Annual

Municipality Sabaneta: Annual

Municipality Sabanalarga: Annual

Municipality Soledad: Monthly

• ISA,INTERCOLOMBIA: apgomez@intercolombia.com
• XM: mpruiz@isa.com.co
• INTERNEXA: internexaimpuestos@isa.com.co
• TRANSELCA: csanchez@transelca.com.co, dosorio@transelca.com.co

• proveedores@isa.com.co (ISA,ITCO, XM e INTERNEXA)
• des-intranet@transelca.com.co (TRANSELCA)

• Income tax withholding: Before March 15 of the following year
• Sales tax withholding: Within 15 calendar days after the two-month period of withholding
• Industry and Commerce tax withholding: Within 10 calendar days of withholding

For tax withheld at source as income, sales tax and industry and commerce tax, provisions of Article 6 of Regulatory Decree 1189 of 1998 must be followed, as follows:

• Written application by the affected party with the withholding, accompanied by evidence where applicable.
• When the refund is requested in the tax year or period following the withholding, the applicant's request must also expressly state that the withholding has not been and will not be charged in the corresponding return.
• Please, send a copy of said request to:
  • ISA: apgomez@isa.com.co
  • XM: mpruiz@isa.com.co
  • INTERNEXA: internexaimpuestos@isa.com.co
  • TRANSELCA: csanchez@transelca.com.co, dosorio@transelca.com.co

The rates are applied as established in the Tax Statute of the Municipality where the service is provided or the respective purchase is made, taking into account the code of the supplier's activity.

• For services, in the municipality where the service was provided.
• For goods, in the municipality where the supplier is located.

In accordance with provisions of Article 32 of Law 142 of 1994, paragraph of Article 8, in line with Article 76 of Law 143 of 1994, the legal regime applicable to actions and contracts of the Company is the private law regime. For contracting processes, standards provided in the Regulation for contracting goods and services in accordance with the Business Policies would be applied. For aspects not covered, provisions of the Civil Code, the Commerce Code, or the rules applicable would be applied.

At the end of the period for submission of biddings for analysis and evaluation.

Register as a supplier here

• ENERGY TRANSMISSION CABLES
• DESIGN OF ENERGY TRANSMISSION LINES
• DESIGN OF SUBSTATIONS
• SPECIAL EQUIPMENT FOR SUBSTATIONS
• SUBSTATION EQUIPMENT
• METAL STRUCTURE
• SECONDARY SYSTEMS FOR SUBSTATIONS

Compliance with legal, technical and commercial requirements as required in each process and as stated in Agreement 108: Regulation for Acquisition of Goods and Services

Monday to Friday from 7:30 A.M. to 6:00 P.M., Document Management - document reception area. Out of these hours, as well as on Saturdays, Sundays and holidays, documentation is received at any time, but at the main gate. This availability applies for the whole year.

For you to be considered in a contracting process, you must be registered in our ISA supplier registration platform, which contains the information of the goods and services that you offer and that we need. To find out about the supplier registration process, please go to the SUPPLIER’S REGISTRATION section.

Should you require additional information related only to payments, please call the number (4) 317 20 42 of Medellín from Monday to Friday from 2:00 p.m. to 4:30 p.m., or send an email to tesoreria@isa.com.co