The most efficient method is to manually submit the required forms to the IRS since the capability to onboard a foreign contractor is unavailable, @sean105.
This approach ensures that the proper documents will be filed accurately.
For further insights about 1099, refer to this article for more information: Get answers to your 1099 questions.
Also, consider exploring QuickBooks Payroll for further assistance in generating and mailing 1099s for your other contractors.
Don't hesitate to update me with any additional questions you have about managing your contractor in QuickBooks Online by leaving a comment below. I'm here to help and just a reply away. Have a great day!