What documentation do self-employed individuals need for visa applications regarding remote work in Thailand?

When applying for a self-employed visa in Thailand, it's common to provide documentation that confirms your ability to work remotely. Some applicants have created an employment contract for themselves, stating their right to work from anywhere, signed by themselves as both employer and employee. Others mention that a letter from your own company affirming your status and ability to work remotely may be required. Additionally, recent income tax filings could be requested as part of the application process.