Sources and methodology

Last reviewed 27 October 2026

Where the facts come from

I use primary sources first. The main ones:

How I check and date information

How often the guides are updated

All articles are reviewed at least once a quarter, and immediately after the rules change. I watch three topics most closely: the ASVG rates every January, the annual quota and the integration rules.

Corrections

If you find an error, please tell us through the contact page. Corrections are made and the update date is changed.