cómo puedo facturar con retención de ITBMS?

Hi, @rmelendez1. You need to create a custom tax agency with the ITBMS tax rate.

To set up a custom tax, navigate to Tax and select Overview, then click Add tax, choose Custom tax, and fill in the required details, including the tax name, description, agency, business ID, and filing frequency, before selecting the reporting method. Enter the Sales rate or the Purchase rate, depending upon the type of transaction selected. If the tax applied to purchases is reclaimable, select the box Purchase tax is reclaimable.

After creating a custom tax agency, record a tax withheld. To learn how to account for a withholding tax deduction on a customer invoice.

Please reply to this thread if you have additional questions.