Special ad categories: when your targeting is illegal, not just wrong
Housing, employment and credit ads carry legal obligations that survive any platform's interface. Excluding by postcode is still discrimination.
If your ad is about housing, employment, or credit, the rules aren't the platform's preferences. They're law, and the platform's category declaration is how you comply with part of it, not the whole of it.
Declare the category
Meta calls this a Special Ad Category. Declaring it removes targeting options that would otherwise be available, which is the point. Age and gender targeting on job ads is unlawful under the ADEA and Title VII. Targeting housing ads by age, gender or postcode runs into the Fair Housing Act. Credit discrimination is prohibited by the Equal Credit Opportunity Act.
Proxies count
The mistake that survives the declaration is the proxy exclusion. An interest, a postcode, a language, a lookalike seeded on a skewed list: each can produce the same outcome as excluding a protected characteristic directly. Intent isn't the test. The effect is.
In the UK and EU
The Equality Act 2010 and equivalent EU directives land in the same place by a different route. Financial promotions carry their own regime on top: under FSMA section 21, communicating an unapproved financial promotion is a criminal offence, not a compliance ticket.
This is a plain-English summary of why the controls exist. It isn't legal advice. If you're running these ads, the person signing them off should be someone qualified to.
AdPlaybook runs a compliance pre-flight over these categories on every campaign and renders the obligations above the build steps, before the money rather than after it.