Hi,
If you are providing online courses to consumers/businesses overseas then the key aspect is to whether you are supplying digital services or not. If you are supplying digital services to consumers in the UK then this would be a taxable supply and would go toward your taxable turnover for VAT registration purposes.
If you are providing digital services to consumers in the EC then you would need to register for MOSS in the EU and charge the appropriate VAT depending on where your customer belongs.
If you are supplying digital services to consumers overseas then these will be outside the scope of VAT and will not go towards your UK taxable turnover for registration purposes. You can see guidance here:
How to determine the place of supply and taxation
Defining digital services
Place of supply of educational services
The above link will define the difference between digial services and education services.
If the services are non digital in nature then please see the guidance here:
B2C services of a professional, technical, financial, intellectual or other intangible nature supplied to customers outside the UK
If you are supplying digital supplies to consumers in the EU then, as stated, you would need to register for MOSS in the EU and this would be outside of UK jurisdiction
When deciding whether you need to register for VAT in the UK you would only include the supplies you make, which as a result of the place of supply rules are deemed to be taking place in the UK. Please see the guidance here:
The place of supply rules for services
Working out whether you need to register
You should keep any evidence you have to prove the location of your customer for 6 years:
Record-keeping rules for all VAT-registered businesses
If you are approaching this as a joint venture, and, or partnership please see the guidance here:
VATREG10000 - Entity to be registered: joint ventures and consortia
It is important to register for VAT at the correct time .If HMRC deem that you should have been registerered from an earlier point then you will need to account for VAT from the point of your registration date.
Thank you.