A web accessibility policy comprises your goals and targets. Policies vary but at a minimum should define what web accessibility standard you aim to conform to and by when. For example, your policy might only state that your website will meet all criteria specified in WCAG 2.1 Level AA within one year. A policy may cover other topics such as:
An accessibility policy will help standardize the way your organization approaches accessibility. The guidelines in your accessibility policy should be clear and simply written. This way everyone in your organization can refer to your policy and understand the implications and their role.
Your accessibility policy doesn't have to be public. The primary value of the accessibility policy is internal. I recommend keeping in mind that it might be a good thing to have a public accessibility policy. Making it public can show your commitment to accessibility and let visitors know what they can expect from your site or agency.
Your accessibility policy will need to be up-to-date so make sure you have someone who will keep the document(s) updated.